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SignalHarness.ai

payment-readydegraded

payment-ready until 2026-10-15

330 production x402 API services for AI agents covering web/data processing, validation, AI utilities, blockchain/crypto utilities and related machine-callable capabilities.

Call it x402 v2

x402 v2

Base URL
https://signalharness.ai
Payment
x402 v2, header channel
$ curl -i -X POST 'https://signalharness.ai/api/agent/services/abi_function_decode/invoke'

An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.

Endpoints 49 paid routes on signalharness.ai

POST/api/agent/services/abi_function_decode/invokeBase$0.01since 09-21
POST/api/agent/services/abi_function_encode/invokeBase$0.01since 09-21
POST/api/agent/services/address_checksum/invokeBase$0.005since 09-21
POST/api/agent/services/address_validate/invokeBase$0.005since 09-21
POST/api/agent/services/agent_tool_schema_validate/invokeBase$0.005since 09-21
POST/api/agent/services/artifact_verify/invokeBase$0.005since 09-21
POST/api/agent/services/base_eip1559_transaction_decode/invokeBase$0.01since 09-21
POST/api/agent/services/bitcoin_transaction_decode/invokeBase$0.015since 09-21

41 more in Example 402 response

Prices as captured in the 402 response: median $0.01 across the 49 endpoints, unchanged since first capture.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
MethodPathDescriptionPriceNetworkAsset402 channelCaptured
POST/api/agent/services/abi_function_decode/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/abi_function_encode/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/address_checksum/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/address_validate/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/agent_tool_schema_validate/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/artifact_verify/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/base_eip1559_transaction_decode/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/bitcoin_transaction_decode/invokeNo description$0.015BaseUSDCheadersince 09-21
POST/api/agent/services/caip10_compare/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/chain_identifier_normalize/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/content_fingerprint/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/content_type_detect/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/csv_normalize_validate/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/defi_price_impact/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/document_diff/invokeNo description$0.02BaseUSDCheadersince 09-21
POST/api/agent/services/eoa_signature_verify/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/erc20_transfer_decode/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/evm_transaction_inspect/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/heading_structure_audit/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/html_table_extract/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/http_header_audit/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/json_repair_normalize/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/json_schema_validate/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/jsonl_normalize_validate/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/link_graph_extract/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/llm_response_schema_validate/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/markdown_outline_extract/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/merkle_proof_verify/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/message_hash_eip191/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/payment_uri_parse/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/polygon_transaction_decode/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/prompt_instruction_conflict_detect/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/prompt_structure_analyze/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/robots_policy_parse/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/schema_org_extract/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/search_result_quality_report/invokeNo description$0.025BaseUSDCheadersince 09-21
POST/api/agent/services/sitemap_extract/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/solana_legacy_transaction_decode/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/structured_diff/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/structured_extract/invokeNo description$0.02BaseUSDCheadersince 09-21
POST/api/agent/services/text_chunk_structure/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/text_deduplicate/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/url_discovery_audit/invokeNo description$0.02BaseUSDCheadersince 09-21
POST/api/agent/services/url_normalize_canonicalize/invokeNo description$0.005BaseUSDCheadersince 09-21
POST/api/agent/services/url_to_markdown/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/wallet_allowance_exposure/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/web_extract/invokeNo description$0.02BaseUSDCheadersince 09-21
POST/api/agent/services/web_metadata_extract/invokeNo description$0.01BaseUSDCheadersince 09-21
POST/api/agent/services/xml_normalize_validate/invokeNo description$0.01BaseUSDCheadersince 09-21

Payment evidence

402 payload captured at . Check evidence JSON · Measurement methodology.

First of 48 payloads captured by the monitor.

267 lines, scroll inside

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/url_to_markdown/invoke",
    "mimeType": "application/json",
    "description": "Fetches one public HTTPS HTML resource without JavaScript execution and returns cleaned Markdown with source integrity metadata.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com/"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "sha256": "0000000000000000000000000000000000000000000000000000000000000000",
              "markdown": "# Example\n\nNormalized caller-supplied content.",
              "byteCount": 0,
              "sourceUrl": "example00",
              "contentType": "Example caller-supplied content."
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "url_to_markdown",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "2f59a0da362f08e2f8b705176bdec894ca8b0bfb34c2a8d4e03e9925b731cd7f",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "url"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "markdown",
                      "sourceUrl",
                      "contentType",
                      "byteCount",
                      "sha256"
                    ],
                    "properties": {
                      "title": {
                        "type": "string",
                        "maxLength": 1024,
                        "minLength": 0
                      },
                      "sha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$",
                        "maxLength": 64,
                        "minLength": 64
                      },
                      "markdown": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 0
                      },
                      "byteCount": {
                        "type": "integer",
                        "maximum": 10485760,
                        "minimum": 0
                      },
                      "sourceUrl": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 9
                      },
                      "contentType": {
                        "type": "string",
                        "maxLength": 256,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 6,
                    "minProperties": 5,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}
Other captured 402 responses (47)

Captured payload 2 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/web_extract/invoke",
    "mimeType": "application/json",
    "description": "Fetches one public HTTPS HTML resource without JavaScript execution and returns deterministic normalized page structure and metadata.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com/"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "links": [
                {
                  "href": "example",
                  "text": "Example caller-supplied content."
                }
              ],
              "images": [
                {
                  "alt": "example",
                  "src": "example"
                }
              ],
              "jsonLd": [
                "{\"example\":\"schema-valid caller-supplied data\"}"
              ],
              "headings": [
                {
                  "text": "Example caller-supplied content.",
                  "level": 1
                }
              ],
              "metadata": [
                {
                  "name": "example",
                  "value": "example"
                }
              ],
              "openGraph": [
                {
                  "name": "example",
                  "value": "example"
                }
              ],
              "sourceUrl": "example00",
              "visibleText": "example"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "web_extract",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "20000",
              "resultSha256": "00c362cc75297a51279588a83ceba25d5b265727f2057f5a22114ae792ef201b",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "url"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "sourceUrl",
                      "headings",
                      "links",
                      "images",
                      "metadata",
                      "openGraph",
                      "jsonLd",
                      "visibleText"
                    ],
                    "properties": {
                      "links": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "text",
                            "href"
                          ],
                          "properties": {
                            "href": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 1
                            },
                            "text": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 0
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "title": {
                        "type": "string",
                        "maxLength": 1024,
                        "minLength": 0
                      },
                      "images": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "alt",
                            "src"
                          ],
                          "properties": {
                            "alt": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 0
                            },
                            "src": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 1
                            },
                            "title": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 0
                            }
                          },
                          "maxProperties": 3,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 128,
                        "minItems": 0
                      },
                      "jsonLd": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 32768,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "headings": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "level",
                            "text"
                          ],
                          "properties": {
                            "text": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 0
                            },
                            "level": {
                              "type": "integer",
                              "maximum": 6,
                              "minimum": 1
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 128,
                        "minItems": 0
                      },
                      "metadata": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "name",
                            "value"
                          ],
                          "properties": {
                            "name": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "value": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 0
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 128,
                        "minItems": 0
                      },
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "openGraph": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "name",
                            "value"
                          ],
                          "properties": {
                            "name": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "value": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 0
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 128,
                        "minItems": 0
                      },
                      "sourceUrl": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 9
                      },
                      "description": {
                        "type": "string",
                        "maxLength": 4096,
                        "minLength": 0
                      },
                      "visibleText": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 0
                      },
                      "canonicalUrl": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 12,
                    "minProperties": 8,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/structured_extract/invoke",
    "mimeType": "application/json",
    "description": "Fetches one public HTTPS HTML resource and performs explicit deterministic selector, attribute, metadata, or JSON-LD path extraction.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com/",
            "fields": [
              {
                "all": false,
                "kind": "text",
                "name": "heading",
                "selector": "h1"
              }
            ]
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "results": [
                {
                  "kind": "text",
                  "name": "example",
                  "values": [
                    "example"
                  ],
                  "matched": 0
                }
              ],
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "sourceUrl": "example00"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "structured_extract",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "20000",
              "resultSha256": "aafd301cc99d8a5d7942b9e44b1f18167d3cb722ffdef8c38106181c66616ca7",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "url",
                  "fields"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  },
                  "fields": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "required": [
                        "name",
                        "kind"
                      ],
                      "properties": {
                        "all": {
                          "type": "boolean"
                        },
                        "kind": {
                          "enum": [
                            "text",
                            "attribute",
                            "metadata",
                            "json_ld"
                          ],
                          "type": "string",
                          "maxLength": 9,
                          "minLength": 4
                        },
                        "name": {
                          "type": "string",
                          "pattern": "^[A-Za-z][A-Za-z0-9_]{0,63}$",
                          "maxLength": 64,
                          "minLength": 1
                        },
                        "path": {
                          "type": "string",
                          "maxLength": 256,
                          "minLength": 1
                        },
                        "selector": {
                          "type": "string",
                          "maxLength": 256,
                          "minLength": 1
                        },
                        "attribute": {
                          "type": "string",
                          "maxLength": 128,
                          "minLength": 1
                        },
                        "metadataKey": {
                          "type": "string",
                          "maxLength": 256,
                          "minLength": 1
                        }
                      },
                      "maxProperties": 7,
                      "minProperties": 2,
                      "additionalProperties": false
                    },
                    "maxItems": 32,
                    "minItems": 1
                  }
                },
                "maxProperties": 2,
                "minProperties": 2,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "sourceUrl",
                      "results",
                      "warnings"
                    ],
                    "properties": {
                      "results": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "name",
                            "kind",
                            "matched",
                            "values"
                          ],
                          "properties": {
                            "kind": {
                              "enum": [
                                "text",
                                "attribute",
                                "metadata",
                                "json_ld"
                              ],
                              "type": "string",
                              "maxLength": 9,
                              "minLength": 4
                            },
                            "name": {
                              "type": "string",
                              "maxLength": 64,
                              "minLength": 1
                            },
                            "values": {
                              "type": "array",
                              "items": {
                                "type": "string",
                                "maxLength": 32768,
                                "minLength": 0
                              },
                              "maxItems": 256,
                              "minItems": 0
                            },
                            "matched": {
                              "type": "integer",
                              "maximum": 256,
                              "minimum": 0
                            }
                          },
                          "maxProperties": 4,
                          "minProperties": 4,
                          "additionalProperties": false
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "sourceUrl": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 9
                      }
                    },
                    "maxProperties": 3,
                    "minProperties": 3,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 4 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/artifact_verify/invoke",
    "mimeType": "application/json",
    "description": "Fetches one public HTTPS artifact without executing it and verifies its SHA-256, MIME type, and byte size against supplied expectations.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com/artifact.bin"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "status": "VERIFIED",
              "byteSize": 0,
              "calculatedSha256": "0000000000000000000000000000000000000000000000000000000000000000"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "artifact_verify",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "4dbe334ff68438b7d30fb15362500240824a991c41a365535c542eb5e448ead6",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "url"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  },
                  "expectedSha256": {
                    "type": "string",
                    "pattern": "^[0-9a-fA-F]{64}$",
                    "maxLength": 64,
                    "minLength": 64
                  },
                  "expectedByteSize": {
                    "type": "integer",
                    "maximum": 10485760,
                    "minimum": 0
                  },
                  "expectedMimeType": {
                    "type": "string",
                    "pattern": "^[A-Za-z0-9!#$&^_.+-]+/[A-Za-z0-9!#$&^_.+-]+$",
                    "maxLength": 256,
                    "minLength": 3
                  }
                },
                "maxProperties": 4,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "status",
                      "calculatedSha256",
                      "byteSize"
                    ],
                    "properties": {
                      "status": {
                        "enum": [
                          "VERIFIED",
                          "MISMATCH",
                          "INSPECTED"
                        ],
                        "type": "string",
                        "maxLength": 9,
                        "minLength": 8
                      },
                      "byteSize": {
                        "type": "integer",
                        "maximum": 10485760,
                        "minimum": 0
                      },
                      "mimeType": {
                        "type": "string",
                        "maxLength": 256,
                        "minLength": 1
                      },
                      "hashMatch": {
                        "type": "boolean"
                      },
                      "mimeMatch": {
                        "type": "boolean"
                      },
                      "sourceUrl": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 9
                      },
                      "byteSizeMatch": {
                        "type": "boolean"
                      },
                      "calculatedSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$",
                        "maxLength": 64,
                        "minLength": 64
                      }
                    },
                    "maxProperties": 8,
                    "minProperties": 3,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 5 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/web_metadata_extract/invoke",
    "mimeType": "application/json",
    "description": "Extracts bounded document metadata, social cards, canonical links, robots directives, language alternates, icons, and JSON-LD from public HTTPS or supplied HTML.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com/"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "icons": [
                {
                  "href": "example",
                  "sizes": "example",
                  "relation": "example"
                }
              ],
              "jsonLd": [
                "{\"example\":\"schema-valid caller-supplied data\"}"
              ],
              "robots": [
                "example"
              ],
              "twitter": [
                {
                  "name": "example",
                  "value": "example"
                }
              ],
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "openGraph": [
                {
                  "name": "example",
                  "value": "example"
                }
              ],
              "contentType": "Example caller-supplied content.",
              "alternateLanguages": [
                {
                  "href": "example",
                  "language": "example"
                }
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "web_metadata_extract",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "6fd2a8bfad3dba7e59252456d43728a949ecd09f865325d69489315168e8e7ad",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  },
                  "html": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "baseUrl": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  }
                },
                "maxProperties": 2,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "contentType",
                      "robots",
                      "openGraph",
                      "twitter",
                      "jsonLd",
                      "alternateLanguages",
                      "icons",
                      "warnings"
                    ],
                    "properties": {
                      "icons": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "relation",
                            "sizes",
                            "href"
                          ],
                          "properties": {
                            "href": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 1
                            },
                            "sizes": {
                              "type": "string",
                              "maxLength": 128,
                              "minLength": 0
                            },
                            "relation": {
                              "type": "string",
                              "maxLength": 64,
                              "minLength": 1
                            }
                          },
                          "maxProperties": 3,
                          "minProperties": 3,
                          "additionalProperties": false
                        },
                        "maxItems": 128,
                        "minItems": 0
                      },
                      "title": {
                        "type": "string",
                        "maxLength": 1024,
                        "minLength": 1
                      },
                      "jsonLd": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 32768,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "robots": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 256,
                          "minLength": 1
                        },
                        "maxItems": 128,
                        "minItems": 0
                      },
                      "twitter": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "name",
                            "value"
                          ],
                          "properties": {
                            "name": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "value": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 1
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 128,
                        "minItems": 0
                      },
                      "language": {
                        "type": "string",
                        "maxLength": 64,
                        "minLength": 1
                      },
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "openGraph": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "name",
                            "value"
                          ],
                          "properties": {
                            "name": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "value": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 1
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 128,
                        "minItems": 0
                      },
                      "sourceUrl": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 9
                      },
                      "contentType": {
                        "type": "string",
                        "maxLength": 256,
                        "minLength": 3
                      },
                      "description": {
                        "type": "string",
                        "maxLength": 4096,
                        "minLength": 1
                      },
                      "canonicalUrl": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 1
                      },
                      "alternateLanguages": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "language",
                            "href"
                          ],
                          "properties": {
                            "href": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 1
                            },
                            "language": {
                              "type": "string",
                              "maxLength": 64,
                              "minLength": 1
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 128,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 13,
                    "minProperties": 8,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 6 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/structured_diff/invoke",
    "mimeType": "application/json",
    "description": "Computes a deterministic bounded structural difference between two JSON values using escaped JSON Pointer paths and index-based array comparison.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "after": {
              "version": 2
            },
            "before": {
              "version": 1
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "added": [
                {
                  "path": "example",
                  "value": {}
                }
              ],
              "changed": [
                {
                  "path": "example",
                  "after": {},
                  "before": {}
                }
              ],
              "removed": [
                {
                  "path": "example",
                  "value": {}
                }
              ],
              "summary": {
                "added": 0,
                "total": 0,
                "changed": 0,
                "removed": 0
              },
              "unchangedCount": 0
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "structured_diff",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "eef31d0cecdd1ad7e4ac279ba4b65b39356fb5a7ebc208786b5441e79bdf9c88",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "before",
                  "after"
                ],
                "properties": {
                  "after": {
                    "type": [
                      "object",
                      "array",
                      "string",
                      "number",
                      "boolean",
                      "null"
                    ]
                  },
                  "before": {
                    "type": [
                      "object",
                      "array",
                      "string",
                      "number",
                      "boolean",
                      "null"
                    ]
                  }
                },
                "maxProperties": 2,
                "minProperties": 2,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "added",
                      "removed",
                      "changed",
                      "unchangedCount",
                      "summary"
                    ],
                    "properties": {
                      "added": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "path",
                            "value"
                          ],
                          "properties": {
                            "path": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 0
                            },
                            "value": {
                              "type": [
                                "object",
                                "array",
                                "string",
                                "number",
                                "boolean",
                                "null"
                              ]
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "changed": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "path",
                            "before",
                            "after"
                          ],
                          "properties": {
                            "path": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 0
                            },
                            "after": {
                              "type": [
                                "object",
                                "array",
                                "string",
                                "number",
                                "boolean",
                                "null"
                              ]
                            },
                            "before": {
                              "type": [
                                "object",
                                "array",
                                "string",
                                "number",
                                "boolean",
                                "null"
                              ]
                            }
                          },
                          "maxProperties": 3,
                          "minProperties": 3,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "removed": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "path",
                            "value"
                          ],
                          "properties": {
                            "path": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 0
                            },
                            "value": {
                              "type": [
                                "object",
                                "array",
                                "string",
                                "number",
                                "boolean",
                                "null"
                              ]
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "summary": {
                        "type": "object",
                        "required": [
                          "added",
                          "removed",
                          "changed",
                          "total"
                        ],
                        "properties": {
                          "added": {
                            "type": "integer",
                            "maximum": 2048,
                            "minimum": 0
                          },
                          "total": {
                            "type": "integer",
                            "maximum": 2048,
                            "minimum": 0
                          },
                          "changed": {
                            "type": "integer",
                            "maximum": 2048,
                            "minimum": 0
                          },
                          "removed": {
                            "type": "integer",
                            "maximum": 2048,
                            "minimum": 0
                          }
                        },
                        "maxProperties": 4,
                        "minProperties": 4,
                        "additionalProperties": false
                      },
                      "unchangedCount": {
                        "type": "integer",
                        "maximum": 8192,
                        "minimum": 0
                      }
                    },
                    "maxProperties": 5,
                    "minProperties": 5,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 7 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/json_repair_normalize/invoke",
    "mimeType": "application/json",
    "description": "Conservatively repairs common JSON formatting defects, rejects ambiguous duplicate or unsafe keys, and emits deterministic canonical JSON.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "text": "{example: true,}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "value": {},
              "repairs": [
                "example"
              ],
              "normalized": "example",
              "duplicateKeys": [
                "example"
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "json_repair_normalize",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "e48ba9ab26657e6400a15821bea7d81c48a83c84ad80cca5b9efd7ff621753e0",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "text"
                ],
                "properties": {
                  "text": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "normalized",
                      "value",
                      "repairs",
                      "duplicateKeys"
                    ],
                    "properties": {
                      "value": {
                        "type": [
                          "object",
                          "array",
                          "string",
                          "number",
                          "boolean",
                          "null"
                        ]
                      },
                      "repairs": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 64,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 0
                      },
                      "normalized": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      },
                      "duplicateKeys": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 256,
                          "minLength": 1
                        },
                        "maxItems": 64,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 8 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/url_discovery_audit/invoke",
    "mimeType": "application/json",
    "description": "Performs a bounded deterministic audit of autonomous-agent and search discovery resources for a public HTTPS URL.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com/"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "url": "https://example.com/resource",
              "checks": [
                {
                  "id": "example",
                  "url": "https://example.com/resource",
                  "detail": "example",
                  "status": "pass"
                }
              ],
              "summary": {
                "fail": 0,
                "pass": 0,
                "warn": 0
              },
              "discoveredResourceUrls": [
                "example00"
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "url_discovery_audit",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "20000",
              "resultSha256": "a95dcf32d5fe7ca2029652a9cc7474e7d464af51b34b67987acbbc2f772defd4",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "url"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "url",
                      "checks",
                      "discoveredResourceUrls",
                      "summary"
                    ],
                    "properties": {
                      "url": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 9
                      },
                      "checks": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "id",
                            "status",
                            "detail",
                            "url"
                          ],
                          "properties": {
                            "id": {
                              "type": "string",
                              "maxLength": 128,
                              "minLength": 1
                            },
                            "url": {
                              "type": [
                                "string",
                                "null"
                              ]
                            },
                            "detail": {
                              "type": "string",
                              "maxLength": 1024,
                              "minLength": 1
                            },
                            "status": {
                              "enum": [
                                "pass",
                                "warn",
                                "fail"
                              ],
                              "type": "string",
                              "maxLength": 4,
                              "minLength": 4
                            }
                          },
                          "maxProperties": 4,
                          "minProperties": 4,
                          "additionalProperties": false
                        },
                        "maxItems": 32,
                        "minItems": 1
                      },
                      "summary": {
                        "type": "object",
                        "required": [
                          "pass",
                          "warn",
                          "fail"
                        ],
                        "properties": {
                          "fail": {
                            "type": "integer",
                            "maximum": 32,
                            "minimum": 0
                          },
                          "pass": {
                            "type": "integer",
                            "maximum": 32,
                            "minimum": 0
                          },
                          "warn": {
                            "type": "integer",
                            "maximum": 32,
                            "minimum": 0
                          }
                        },
                        "maxProperties": 3,
                        "minProperties": 3,
                        "additionalProperties": false
                      },
                      "discoveredResourceUrls": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 2048,
                          "minLength": 9
                        },
                        "maxItems": 16,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 9 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/sitemap_extract/invoke",
    "mimeType": "application/json",
    "description": "Parses bounded XML sitemap urlsets and indexes without entity expansion or recursive fetching.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "xml": "<?xml version=\"1.0\"?><urlset><url><loc>https://example.com/</loc></url></urlset>"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "kind": "urlset",
              "urls": [
                {
                  "url": "https://example.com/resource",
                  "lastmod": "example",
                  "priority": "example",
                  "alternates": [
                    {
                      "href": "example00",
                      "language": "example"
                    }
                  ],
                  "changefreq": "example"
                }
              ],
              "counts": {
                "urls": 0,
                "malformed": 0,
                "childSitemaps": 0
              },
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "childSitemaps": [
                {
                  "url": "https://example.com/resource",
                  "lastmod": "example"
                }
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "sitemap_extract",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "6dd3583feb5ce645bf8e45d6ec2d59ea95858baef0e089fc7b4cf8cd7800f697",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  },
                  "xml": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "kind",
                      "urls",
                      "childSitemaps",
                      "counts",
                      "warnings"
                    ],
                    "properties": {
                      "kind": {
                        "enum": [
                          "urlset",
                          "sitemapindex"
                        ],
                        "type": "string",
                        "maxLength": 12,
                        "minLength": 6
                      },
                      "urls": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "url",
                            "lastmod",
                            "changefreq",
                            "priority",
                            "alternates"
                          ],
                          "properties": {
                            "url": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 9
                            },
                            "lastmod": {
                              "type": [
                                "string",
                                "null"
                              ]
                            },
                            "priority": {
                              "type": [
                                "string",
                                "null"
                              ]
                            },
                            "alternates": {
                              "type": "array",
                              "items": {
                                "type": "object",
                                "required": [
                                  "language",
                                  "href"
                                ],
                                "properties": {
                                  "href": {
                                    "type": "string",
                                    "maxLength": 2048,
                                    "minLength": 9
                                  },
                                  "language": {
                                    "type": "string",
                                    "maxLength": 64,
                                    "minLength": 0
                                  }
                                },
                                "maxProperties": 2,
                                "minProperties": 2,
                                "additionalProperties": false
                              },
                              "maxItems": 64,
                              "minItems": 0
                            },
                            "changefreq": {
                              "type": [
                                "string",
                                "null"
                              ]
                            }
                          },
                          "maxProperties": 5,
                          "minProperties": 5,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "counts": {
                        "type": "object",
                        "required": [
                          "urls",
                          "childSitemaps",
                          "malformed"
                        ],
                        "properties": {
                          "urls": {
                            "type": "integer",
                            "maximum": 10000,
                            "minimum": 0
                          },
                          "malformed": {
                            "type": "integer",
                            "maximum": 10000,
                            "minimum": 0
                          },
                          "childSitemaps": {
                            "type": "integer",
                            "maximum": 256,
                            "minimum": 0
                          }
                        },
                        "maxProperties": 3,
                        "minProperties": 3,
                        "additionalProperties": false
                      },
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "childSitemaps": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "url",
                            "lastmod"
                          ],
                          "properties": {
                            "url": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 9
                            },
                            "lastmod": {
                              "type": [
                                "string",
                                "null"
                              ]
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 5,
                    "minProperties": 5,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 10 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/robots_policy_parse/invoke",
    "mimeType": "application/json",
    "description": "Parses robots.txt groups and applies deterministic longest-match allow and disallow semantics.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "text": "User-agent: *\nAllow: /"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "groups": [
                {
                  "rules": [
                    {
                      "path": "example",
                      "directive": "allow"
                    }
                  ],
                  "crawlDelay": 0,
                  "userAgents": [
                    "example"
                  ]
                }
              ],
              "sitemaps": [
                "example"
              ],
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "crawlDelay": 0,
              "matchedRule": {},
              "crawlAllowed": false,
              "matchedGroup": [
                null
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "robots_policy_parse",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "9f187257ea9c44cac9c39fc35e42f5352601cd2a27c6b8ee4122b8e15d4a2306",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  },
                  "text": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 0
                  },
                  "userAgent": {
                    "type": "string",
                    "maxLength": 256,
                    "minLength": 1
                  },
                  "targetPath": {
                    "type": "string",
                    "maxLength": 2048,
                    "minLength": 1
                  }
                },
                "maxProperties": 3,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "groups",
                      "matchedGroup",
                      "matchedRule",
                      "crawlAllowed",
                      "sitemaps",
                      "crawlDelay",
                      "warnings"
                    ],
                    "properties": {
                      "groups": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "userAgents",
                            "rules",
                            "crawlDelay"
                          ],
                          "properties": {
                            "rules": {
                              "type": "array",
                              "items": {
                                "type": "object",
                                "required": [
                                  "directive",
                                  "path"
                                ],
                                "properties": {
                                  "path": {
                                    "type": "string",
                                    "maxLength": 2048,
                                    "minLength": 0
                                  },
                                  "directive": {
                                    "enum": [
                                      "allow",
                                      "disallow"
                                    ],
                                    "type": "string",
                                    "maxLength": 8,
                                    "minLength": 5
                                  }
                                },
                                "maxProperties": 2,
                                "minProperties": 2,
                                "additionalProperties": false
                              },
                              "maxItems": 256,
                              "minItems": 0
                            },
                            "crawlDelay": {
                              "type": [
                                "number",
                                "null"
                              ]
                            },
                            "userAgents": {
                              "type": "array",
                              "items": {
                                "type": "string",
                                "maxLength": 256,
                                "minLength": 1
                              },
                              "maxItems": 32,
                              "minItems": 1
                            }
                          },
                          "maxProperties": 3,
                          "minProperties": 3,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "sitemaps": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 2048,
                          "minLength": 1
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "crawlDelay": {
                        "type": [
                          "number",
                          "null"
                        ]
                      },
                      "matchedRule": {
                        "type": [
                          "object",
                          "null"
                        ]
                      },
                      "crawlAllowed": {
                        "type": [
                          "boolean",
                          "null"
                        ]
                      },
                      "matchedGroup": {
                        "type": [
                          "array",
                          "null"
                        ]
                      }
                    },
                    "maxProperties": 7,
                    "minProperties": 7,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 11 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/schema_org_extract/invoke",
    "mimeType": "application/json",
    "description": "Extracts bounded JSON-LD Schema.org entities, type indexes, and explicit relationships without inventing values.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "html": "<script type=\"application/ld+json\">{\"@type\":\"WebPage\"}</script>"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "entities": [
                {
                  "id": "example",
                  "types": [
                    "example"
                  ],
                  "valueJson": "example"
                }
              ],
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "typeIndex": [
                {
                  "ids": [
                    "example"
                  ],
                  "type": "example"
                }
              ],
              "entityCount": 0,
              "relationships": [
                {
                  "to": "example",
                  "from": "example",
                  "kind": "example"
                }
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "schema_org_extract",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "0ffabd1323aa846e93b577eebbbb6107ab3669ce3d2efb57b1b206b65a26d83e",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  },
                  "html": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "baseUrl": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  }
                },
                "maxProperties": 2,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "entityCount",
                      "typeIndex",
                      "entities",
                      "relationships",
                      "warnings"
                    ],
                    "properties": {
                      "entities": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "id",
                            "types",
                            "valueJson"
                          ],
                          "properties": {
                            "id": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 1
                            },
                            "types": {
                              "type": "array",
                              "items": {
                                "type": "string",
                                "maxLength": 256,
                                "minLength": 1
                              },
                              "maxItems": 32,
                              "minItems": 0
                            },
                            "valueJson": {
                              "type": "string",
                              "maxLength": 65536,
                              "minLength": 2
                            }
                          },
                          "maxProperties": 3,
                          "minProperties": 3,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "typeIndex": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "type",
                            "ids"
                          ],
                          "properties": {
                            "ids": {
                              "type": "array",
                              "items": {
                                "type": "string",
                                "maxLength": 2048,
                                "minLength": 1
                              },
                              "maxItems": 256,
                              "minItems": 1
                            },
                            "type": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "entityCount": {
                        "type": "integer",
                        "maximum": 2000,
                        "minimum": 0
                      },
                      "relationships": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "from",
                            "to",
                            "kind"
                          ],
                          "properties": {
                            "to": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 1
                            },
                            "from": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 1
                            },
                            "kind": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            }
                          },
                          "maxProperties": 3,
                          "minProperties": 3,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 5,
                    "minProperties": 5,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 12 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/content_fingerprint/invoke",
    "mimeType": "application/json",
    "description": "Produces exact and explicitly normalized SHA-256 fingerprints for bounded text, JSON, HTML, or base64 bytes.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "text": "example"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "type": "example",
              "sha256": "0000000000000000000000000000000000000000000000000000000000000000",
              "byteCount": 0,
              "normalization": "example",
              "normalizedLength": 0,
              "normalizedSha256": "0000000000000000000000000000000000000000000000000000000000000000"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "content_fingerprint",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "3861c2f5ca83c78359f3fc168c79d4dab10e7dc1d28858e724e9f33d397cb3b1",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "html": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "json": {
                    "type": [
                      "object",
                      "array",
                      "string",
                      "number",
                      "boolean",
                      "null"
                    ]
                  },
                  "text": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 0
                  },
                  "type": {
                    "type": "string",
                    "maxLength": 128,
                    "minLength": 1
                  },
                  "base64": {
                    "type": "string",
                    "pattern": "^[A-Za-z0-9+/]*={0,2}$",
                    "maxLength": 65536,
                    "minLength": 0
                  }
                },
                "maxProperties": 2,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "sha256",
                      "normalizedSha256",
                      "byteCount",
                      "normalizedLength",
                      "type",
                      "normalization"
                    ],
                    "properties": {
                      "type": {
                        "type": "string",
                        "maxLength": 128,
                        "minLength": 1
                      },
                      "sha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$",
                        "maxLength": 64,
                        "minLength": 64
                      },
                      "byteCount": {
                        "type": "integer",
                        "maximum": 1048576,
                        "minimum": 0
                      },
                      "normalization": {
                        "type": "string",
                        "maxLength": 128,
                        "minLength": 1
                      },
                      "normalizedLength": {
                        "type": "integer",
                        "maximum": 1048576,
                        "minimum": 0
                      },
                      "normalizedSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$",
                        "maxLength": 64,
                        "minLength": 64
                      }
                    },
                    "maxProperties": 6,
                    "minProperties": 6,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 13 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/text_chunk_structure/invoke",
    "mimeType": "application/json",
    "description": "Creates deterministic source-ordered chunks from text or Markdown using headings, paragraphs, lists, and code blocks.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "text": "# Example\n\nBody."
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "chunks": [
                {
                  "id": "example000",
                  "end": 0,
                  "hash": "0000000000000000000000000000000000000000000000000000000000000000",
                  "text": "Example caller-supplied content.",
                  "start": 0,
                  "ordinal": 0,
                  "estimatedTokens": 1,
                  "headingHierarchy": [
                    "example"
                  ]
                }
              ],
              "chunkCount": 0,
              "sourceHash": "0000000000000000000000000000000000000000000000000000000000000000"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "text_chunk_structure",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "fee508f9f11138fc85b0266678dd3eb921bd79d1c0bbf7206f5505fd2f11bb12",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "text"
                ],
                "properties": {
                  "text": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "maxChunkChars": {
                    "type": "integer",
                    "maximum": 16000,
                    "minimum": 256
                  }
                },
                "maxProperties": 2,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "chunkCount",
                      "chunks",
                      "sourceHash"
                    ],
                    "properties": {
                      "chunks": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "id",
                            "headingHierarchy",
                            "text",
                            "start",
                            "end",
                            "estimatedTokens",
                            "hash",
                            "ordinal"
                          ],
                          "properties": {
                            "id": {
                              "type": "string",
                              "maxLength": 16,
                              "minLength": 10
                            },
                            "end": {
                              "type": "integer",
                              "maximum": 1048576,
                              "minimum": 0
                            },
                            "hash": {
                              "type": "string",
                              "pattern": "^[0-9a-f]{64}$",
                              "maxLength": 64,
                              "minLength": 64
                            },
                            "text": {
                              "type": "string",
                              "maxLength": 16000,
                              "minLength": 1
                            },
                            "start": {
                              "type": "integer",
                              "maximum": 1048576,
                              "minimum": 0
                            },
                            "ordinal": {
                              "type": "integer",
                              "maximum": 511,
                              "minimum": 0
                            },
                            "estimatedTokens": {
                              "type": "integer",
                              "maximum": 100000,
                              "minimum": 1
                            },
                            "headingHierarchy": {
                              "type": "array",
                              "items": {
                                "type": "string",
                                "maxLength": 8192,
                                "minLength": 1
                              },
                              "maxItems": 6,
                              "minItems": 0
                            }
                          },
                          "maxProperties": 8,
                          "minProperties": 8,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "chunkCount": {
                        "type": "integer",
                        "maximum": 512,
                        "minimum": 0
                      },
                      "sourceHash": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$",
                        "maxLength": 64,
                        "minLength": 64
                      }
                    },
                    "maxProperties": 3,
                    "minProperties": 3,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 14 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/markdown_outline_extract/invoke",
    "mimeType": "application/json",
    "description": "Extracts a deterministic source-ordered Markdown heading outline with stable anchors, parent ordinals, offsets, and section ranges.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "markdown": "# Example\n\n## Detail"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "title": "example",
              "headings": [
                {
                  "end": 0,
                  "text": "Example caller-supplied content.",
                  "level": 1,
                  "start": 0,
                  "anchor": "example",
                  "ordinal": 0,
                  "sectionEnd": 0,
                  "sectionStart": 0,
                  "parentOrdinal": -1
                }
              ],
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "headingCount": 0
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "markdown_outline_extract",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "b190eb5a7af63f7c83c3ac8ba3eff252ceebe13556fe09aae25d112fc8ba8219",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "text": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "markdown": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "maximumHeadingDepth": {
                    "type": "integer",
                    "maximum": 6,
                    "minimum": 1
                  },
                  "includeSectionRanges": {
                    "type": "boolean"
                  }
                },
                "maxProperties": 3,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "title",
                      "headingCount",
                      "headings",
                      "warnings"
                    ],
                    "properties": {
                      "title": {
                        "type": "string",
                        "maxLength": 8192,
                        "minLength": 0
                      },
                      "headings": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "level",
                            "text",
                            "anchor",
                            "ordinal",
                            "start",
                            "end",
                            "sectionStart",
                            "sectionEnd",
                            "parentOrdinal"
                          ],
                          "properties": {
                            "end": {
                              "type": "integer",
                              "maximum": 524288,
                              "minimum": 0
                            },
                            "text": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 0
                            },
                            "level": {
                              "type": "integer",
                              "maximum": 6,
                              "minimum": 1
                            },
                            "start": {
                              "type": "integer",
                              "maximum": 524288,
                              "minimum": 0
                            },
                            "anchor": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 1
                            },
                            "ordinal": {
                              "type": "integer",
                              "maximum": 255,
                              "minimum": 0
                            },
                            "sectionEnd": {
                              "type": "integer",
                              "maximum": 524288,
                              "minimum": 0
                            },
                            "sectionStart": {
                              "type": "integer",
                              "maximum": 524288,
                              "minimum": 0
                            },
                            "parentOrdinal": {
                              "type": "integer",
                              "maximum": 255,
                              "minimum": -1
                            }
                          },
                          "maxProperties": 9,
                          "minProperties": 9,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "headingCount": {
                        "type": "integer",
                        "maximum": 256,
                        "minimum": 0
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 15 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/link_graph_extract/invoke",
    "mimeType": "application/json",
    "description": "Extracts bounded normalized internal, external, and anchor relationships from supplied HTML or one safely fetched URL without crawling.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "html": "<a href=\"/example\">Example</a>",
            "baseUrl": "https://example.com/"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "edges": [
                "example"
              ],
              "nodes": [
                "example"
              ],
              "anchors": [
                "example"
              ],
              "baseUrl": "example00",
              "linkCount": 0,
              "externalLinks": [
                "example"
              ],
              "internalLinks": [
                "example"
              ],
              "duplicateCount": 0,
              "uniqueDestinationCount": 0
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "link_graph_extract",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "b02ed9f247a705573b6f2f8f5ca89f178d4d23ccd6da547fd05490e8ffb0b53e",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  },
                  "html": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "baseUrl": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  }
                },
                "maxProperties": 2,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "baseUrl",
                      "linkCount",
                      "uniqueDestinationCount",
                      "duplicateCount",
                      "internalLinks",
                      "externalLinks",
                      "anchors",
                      "nodes",
                      "edges"
                    ],
                    "properties": {
                      "edges": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 4096,
                          "minLength": 2
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "nodes": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 4096,
                          "minLength": 2
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "anchors": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 16384,
                          "minLength": 2
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "baseUrl": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 9
                      },
                      "linkCount": {
                        "type": "integer",
                        "maximum": 512,
                        "minimum": 0
                      },
                      "externalLinks": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 16384,
                          "minLength": 2
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "internalLinks": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 16384,
                          "minLength": 2
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "duplicateCount": {
                        "type": "integer",
                        "maximum": 512,
                        "minimum": 0
                      },
                      "uniqueDestinationCount": {
                        "type": "integer",
                        "maximum": 512,
                        "minimum": 0
                      }
                    },
                    "maxProperties": 9,
                    "minProperties": 9,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 16 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/jsonl_normalize_validate/invoke",
    "mimeType": "application/json",
    "description": "Parses bounded JSON Lines deterministically, retains rejected lines, and emits canonical JSON records with source line numbers.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "text": "{\"example\":1}\n{\"example\":2}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "records": [
                {
                  "line": 1,
                  "value": {},
                  "canonical": "example"
                }
              ],
              "normalized": "example",
              "validCount": 0,
              "recordCount": 0,
              "invalidCount": 0,
              "rejectedLines": [
                {
                  "line": 1,
                  "text": "Example caller-supplied content.",
                  "error": "example"
                }
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "jsonl_normalize_validate",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "6cbd37ba1826039053fcb14ffb19aabb2e56aa4337811eac9b48b252f6839b2d",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "text"
                ],
                "properties": {
                  "text": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "blankLinePolicy": {
                    "enum": [
                      "ignore",
                      "reject"
                    ],
                    "type": "string",
                    "maxLength": 6,
                    "minLength": 6
                  }
                },
                "maxProperties": 2,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "recordCount",
                      "validCount",
                      "invalidCount",
                      "records",
                      "rejectedLines",
                      "normalized"
                    ],
                    "properties": {
                      "records": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "line",
                            "value",
                            "canonical"
                          ],
                          "properties": {
                            "line": {
                              "type": "integer",
                              "maximum": 4096,
                              "minimum": 1
                            },
                            "value": {
                              "type": [
                                "object",
                                "array",
                                "string",
                                "number",
                                "boolean",
                                "null"
                              ]
                            },
                            "canonical": {
                              "type": "string",
                              "maxLength": 65536,
                              "minLength": 1
                            }
                          },
                          "maxProperties": 3,
                          "minProperties": 3,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "normalized": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 0
                      },
                      "validCount": {
                        "type": "integer",
                        "maximum": 256,
                        "minimum": 0
                      },
                      "recordCount": {
                        "type": "integer",
                        "maximum": 256,
                        "minimum": 0
                      },
                      "invalidCount": {
                        "type": "integer",
                        "maximum": 256,
                        "minimum": 0
                      },
                      "rejectedLines": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "line",
                            "text",
                            "error"
                          ],
                          "properties": {
                            "line": {
                              "type": "integer",
                              "maximum": 4096,
                              "minimum": 1
                            },
                            "text": {
                              "type": "string",
                              "maxLength": 1024,
                              "minLength": 0
                            },
                            "error": {
                              "type": "string",
                              "maxLength": 128,
                              "minLength": 1
                            }
                          },
                          "maxProperties": 3,
                          "minProperties": 3,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 6,
                    "minProperties": 6,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 17 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/xml_normalize_validate/invoke",
    "mimeType": "application/json",
    "description": "Safely validates and normalizes bounded XML into a deterministic structural representation without entity resolution or network access.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "xml": "<root><item>example</item></root>"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "root": "example",
              "errors": [
                "example"
              ],
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "nodeCount": 1,
              "structure": "example",
              "namespaces": [
                {
                  "name": "example",
                  "value": "example"
                }
              ],
              "wellFormed": false
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "xml_normalize_validate",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "b5e29ac589d21aa3a81b58e3167709d76598c09192ae9593f7b255d5bf723448",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "xml"
                ],
                "properties": {
                  "xml": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "wellFormed",
                      "root",
                      "namespaces",
                      "nodeCount",
                      "structure",
                      "warnings",
                      "errors"
                    ],
                    "properties": {
                      "root": {
                        "type": "string",
                        "maxLength": 256,
                        "minLength": 1
                      },
                      "errors": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "nodeCount": {
                        "type": "integer",
                        "maximum": 4096,
                        "minimum": 1
                      },
                      "structure": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 2
                      },
                      "namespaces": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "name",
                            "value"
                          ],
                          "properties": {
                            "name": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 5
                            },
                            "value": {
                              "type": "string",
                              "maxLength": 4096,
                              "minLength": 0
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "wellFormed": {
                        "type": "boolean"
                      }
                    },
                    "maxProperties": 7,
                    "minProperties": 7,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 18 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/content_type_detect/invoke",
    "mimeType": "application/json",
    "description": "Detects likely bounded content types from inert text or base64 bytes using deterministic signatures and structural signals without execution.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "text": "{\"example\":true}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "charset": "example",
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "confidence": "low",
              "declaredMime": "example",
              "detectedMime": "example",
              "structuralSignals": [
                "example"
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "content_type_detect",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "0abe3e1f995624e5b4b1ef40923938cdbeceda495862435105fd57c6d845589a",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "text": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "base64": {
                    "type": "string",
                    "pattern": "^[A-Za-z0-9+/]*={0,2}$",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "filename": {
                    "type": "string",
                    "maxLength": 1024,
                    "minLength": 1
                  },
                  "declaredContentType": {
                    "type": "string",
                    "maxLength": 256,
                    "minLength": 1
                  }
                },
                "maxProperties": 4,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "detectedMime",
                      "declaredMime",
                      "charset",
                      "confidence",
                      "structuralSignals",
                      "warnings"
                    ],
                    "properties": {
                      "charset": {
                        "type": "string",
                        "maxLength": 64,
                        "minLength": 0
                      },
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "confidence": {
                        "enum": [
                          "low",
                          "medium",
                          "high"
                        ],
                        "type": "string",
                        "maxLength": 6,
                        "minLength": 3
                      },
                      "declaredMime": {
                        "type": "string",
                        "maxLength": 256,
                        "minLength": 0
                      },
                      "detectedMime": {
                        "type": "string",
                        "maxLength": 256,
                        "minLength": 1
                      },
                      "structuralSignals": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 128,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 1
                      }
                    },
                    "maxProperties": 6,
                    "minProperties": 6,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 19 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/heading_structure_audit/invoke",
    "mimeType": "application/json",
    "description": "Audits bounded HTML or Markdown heading hierarchy, duplicates, IDs, skipped levels, and empty headings deterministically.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "markdown": "# Example\n\n### Detail"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "format": "html",
              "status": "pass",
              "outline": [
                {
                  "id": "example",
                  "text": "Example caller-supplied content.",
                  "level": 1,
                  "ordinal": 0
                }
              ],
              "summary": {
                "h1Count": 0,
                "failCount": 0,
                "warnCount": 0,
                "headingCount": 0
              },
              "findings": [
                {
                  "code": "empty_heading",
                  "ordinal": 0,
                  "severity": "warn"
                }
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "heading_structure_audit",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "8d84614babda1c1bd530afa4959a19bfe4b54a572b11fbe18adfdbfe9612f1a6",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "html": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "markdown": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "format",
                      "status",
                      "outline",
                      "findings",
                      "summary"
                    ],
                    "properties": {
                      "format": {
                        "enum": [
                          "html",
                          "markdown"
                        ],
                        "type": "string",
                        "maxLength": 8,
                        "minLength": 4
                      },
                      "status": {
                        "enum": [
                          "pass",
                          "warn",
                          "fail"
                        ],
                        "type": "string",
                        "maxLength": 4,
                        "minLength": 4
                      },
                      "outline": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "level",
                            "text",
                            "id",
                            "ordinal"
                          ],
                          "properties": {
                            "id": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 0
                            },
                            "text": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 0
                            },
                            "level": {
                              "type": "integer",
                              "maximum": 6,
                              "minimum": 1
                            },
                            "ordinal": {
                              "type": "integer",
                              "maximum": 255,
                              "minimum": 0
                            }
                          },
                          "maxProperties": 4,
                          "minProperties": 4,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "summary": {
                        "type": "object",
                        "required": [
                          "headingCount",
                          "h1Count",
                          "failCount",
                          "warnCount"
                        ],
                        "properties": {
                          "h1Count": {
                            "type": "integer",
                            "maximum": 256,
                            "minimum": 0
                          },
                          "failCount": {
                            "type": "integer",
                            "maximum": 256,
                            "minimum": 0
                          },
                          "warnCount": {
                            "type": "integer",
                            "maximum": 256,
                            "minimum": 0
                          },
                          "headingCount": {
                            "type": "integer",
                            "maximum": 256,
                            "minimum": 0
                          }
                        },
                        "maxProperties": 4,
                        "minProperties": 4,
                        "additionalProperties": false
                      },
                      "findings": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "code",
                            "severity",
                            "ordinal"
                          ],
                          "properties": {
                            "code": {
                              "enum": [
                                "empty_heading",
                                "skipped_level",
                                "duplicate_id",
                                "duplicate_heading"
                              ],
                              "type": "string",
                              "maxLength": 17,
                              "minLength": 11
                            },
                            "ordinal": {
                              "type": "integer",
                              "maximum": 255,
                              "minimum": 0
                            },
                            "severity": {
                              "enum": [
                                "warn",
                                "fail"
                              ],
                              "type": "string",
                              "maxLength": 4,
                              "minLength": 4
                            }
                          },
                          "maxProperties": 3,
                          "minProperties": 3,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 5,
                    "minProperties": 5,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 20 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/http_header_audit/invoke",
    "mimeType": "application/json",
    "description": "Audits bounded supplied or safely fetched HTTP headers for caching, security, discovery, CORS, and x402 signals.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "headers": [
              [
                "content-type",
                "text/html"
              ],
              [
                "cache-control",
                "max-age=60"
              ]
            ]
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "result": "pass",
              "status": 0,
              "findings": [
                {
                  "code": "duplicate_header",
                  "header": "example",
                  "severity": "info"
                }
              ],
              "sourceUrl": "example",
              "cacheSummary": {
                "missing": [
                  "example"
                ],
                "present": [
                  "example"
                ]
              },
              "securitySummary": {
                "missing": [
                  "example"
                ],
                "present": [
                  "example"
                ]
              },
              "discoverySummary": {
                "missing": [
                  "example"
                ],
                "present": [
                  "example"
                ]
              },
              "normalizedHeaders": [
                {
                  "name": "example",
                  "values": [
                    "example"
                  ]
                }
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "http_header_audit",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "2e6f0112ecd6a6aa620f18b3534e611c60f827bcd353b606f3640d5d1dbfc6f7",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  },
                  "status": {
                    "type": "integer",
                    "maximum": 599,
                    "minimum": 100
                  },
                  "headers": {
                    "type": "array",
                    "items": {
                      "type": "array",
                      "items": {
                        "type": "string",
                        "maxLength": 8192,
                        "minLength": 0
                      },
                      "maxItems": 2,
                      "minItems": 2
                    },
                    "maxItems": 128,
                    "minItems": 1
                  }
                },
                "maxProperties": 2,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "sourceUrl",
                      "status",
                      "normalizedHeaders",
                      "findings",
                      "result",
                      "cacheSummary",
                      "securitySummary",
                      "discoverySummary"
                    ],
                    "properties": {
                      "result": {
                        "enum": [
                          "pass",
                          "warn",
                          "fail"
                        ],
                        "type": "string",
                        "maxLength": 4,
                        "minLength": 4
                      },
                      "status": {
                        "type": "integer",
                        "maximum": 599,
                        "minimum": 0
                      },
                      "findings": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "code",
                            "severity",
                            "header"
                          ],
                          "properties": {
                            "code": {
                              "enum": [
                                "duplicate_header",
                                "missing_header",
                                "cors_wildcard_credentials"
                              ],
                              "type": "string",
                              "maxLength": 25,
                              "minLength": 14
                            },
                            "header": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "severity": {
                              "enum": [
                                "info",
                                "warn",
                                "fail"
                              ],
                              "type": "string",
                              "maxLength": 4,
                              "minLength": 4
                            }
                          },
                          "maxProperties": 3,
                          "minProperties": 3,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "sourceUrl": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 0
                      },
                      "cacheSummary": {
                        "type": "object",
                        "required": [
                          "present",
                          "missing"
                        ],
                        "properties": {
                          "missing": {
                            "type": "array",
                            "items": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "maxItems": 16,
                            "minItems": 0
                          },
                          "present": {
                            "type": "array",
                            "items": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "maxItems": 16,
                            "minItems": 0
                          }
                        },
                        "maxProperties": 2,
                        "minProperties": 2,
                        "additionalProperties": false
                      },
                      "securitySummary": {
                        "type": "object",
                        "required": [
                          "present",
                          "missing"
                        ],
                        "properties": {
                          "missing": {
                            "type": "array",
                            "items": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "maxItems": 16,
                            "minItems": 0
                          },
                          "present": {
                            "type": "array",
                            "items": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "maxItems": 16,
                            "minItems": 0
                          }
                        },
                        "maxProperties": 2,
                        "minProperties": 2,
                        "additionalProperties": false
                      },
                      "discoverySummary": {
                        "type": "object",
                        "required": [
                          "present",
                          "missing"
                        ],
                        "properties": {
                          "missing": {
                            "type": "array",
                            "items": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "maxItems": 16,
                            "minItems": 0
                          },
                          "present": {
                            "type": "array",
                            "items": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "maxItems": 16,
                            "minItems": 0
                          }
                        },
                        "maxProperties": 2,
                        "minProperties": 2,
                        "additionalProperties": false
                      },
                      "normalizedHeaders": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "name",
                            "values"
                          ],
                          "properties": {
                            "name": {
                              "type": "string",
                              "maxLength": 256,
                              "minLength": 1
                            },
                            "values": {
                              "type": "array",
                              "items": {
                                "type": "string",
                                "maxLength": 8192,
                                "minLength": 0
                              },
                              "maxItems": 128,
                              "minItems": 1
                            }
                          },
                          "maxProperties": 2,
                          "minProperties": 2,
                          "additionalProperties": false
                        },
                        "maxItems": 128,
                        "minItems": 1
                      }
                    },
                    "maxProperties": 8,
                    "minProperties": 8,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 21 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/address_validate/invoke",
    "mimeType": "application/json",
    "description": "Validate one caller-supplied EVM, Solana, or Bitcoin address for the explicitly selected format.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "address_validation_request": "{\"kind\":\"evm\",\"address\":\"0x0000000000000000000000000000000000000001\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Format validation does not prove ownership, activity, or safety."
              ],
              "service_id": "address_validate",
              "evidence_scope": "caller_supplied_data",
              "address_validation": "{\"kind\":\"evm\",\"normalized\":\"0x0000000000000000000000000000000000000001\",\"valid\":true}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "address_validate",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "4fe9987a987fb6c70c30c808a20840f7b32688abb8c485a93a85cfb165146876",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "address_validation_request"
                ],
                "properties": {
                  "address_validation_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "address_validation",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "address_validate",
                        "maxLength": 16,
                        "minLength": 16
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "address_validation": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 22 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/address_checksum/invoke",
    "mimeType": "application/json",
    "description": "Normalize one caller-supplied EVM address to its EIP-55 checksum representation.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "address_checksum_request": "{\"address\":\"0x0000000000000000000000000000000000000001\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Checksum normalization does not prove ownership or contract identity."
              ],
              "service_id": "address_checksum",
              "evidence_scope": "caller_supplied_data",
              "checksummed_address": "{\"address\":\"0x0000000000000000000000000000000000000001\"}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "address_checksum",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "06bd30b59a10c7002c04b6cd85eb68b782ba7e432fa3224547e7f818f7937fbf",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "address_checksum_request"
                ],
                "properties": {
                  "address_checksum_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "checksummed_address",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "address_checksum",
                        "maxLength": 16,
                        "minLength": 16
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "checksummed_address": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 23 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/chain_identifier_normalize/invoke",
    "mimeType": "application/json",
    "description": "Normalize and validate an explicitly supplied CAIP-2 chain identifier.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "chain_identifier_request": "{\"chain_id\":\"eip155:8453\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Syntax validation does not prove that a network is live or supported."
              ],
              "service_id": "chain_identifier_normalize",
              "evidence_scope": "caller_supplied_data",
              "normalized_chain_identifier": "{\"caip2\":\"eip155:8453\",\"namespace\":\"eip155\",\"reference\":\"8453\"}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "chain_identifier_normalize",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "2ba06956ecf012708d6e9bd69f353b3a26b607247602c7ffecc509d71f72be11",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "chain_identifier_request"
                ],
                "properties": {
                  "chain_identifier_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "normalized_chain_identifier",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "chain_identifier_normalize",
                        "maxLength": 26,
                        "minLength": 26
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "normalized_chain_identifier": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 24 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/caip10_compare/invoke",
    "mimeType": "application/json",
    "description": "Compare two supplied CAIP-10 identifiers after deterministic normalization.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "account_comparison_request": "{\"left\":\"eip155:8453:0x0000000000000000000000000000000000000001\",\"right\":\"eip155:8453:0x0000000000000000000000000000000000000001\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Equality is syntactic and does not link accounts across chains."
              ],
              "service_id": "caip10_compare",
              "evidence_scope": "caller_supplied_data",
              "account_comparison": "{\"equal\":true,\"left\":{\"address\":\"0x0000000000000000000000000000000000000001\",\"caip10\":\"eip155:8453:0x0000000000000000000000000000000000000001\",\"namespace\":\"eip155\",\"reference\":\"8453\"},\"right\":{\"address\":\"0x0000000000000000000000000000000000000001\",\"caip10\":\"eip155:8453:0x0000000000000000000000000000000000000001\",\"namespace\":\"eip155\",\"reference\":\"8453\"},\"same_chain\":true}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "caip10_compare",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "d44bfe68f8e7576826c69222ae71a5e9ed968e45d96cbc92580062675f190c7c",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "account_comparison_request"
                ],
                "properties": {
                  "account_comparison_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "account_comparison",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "caip10_compare",
                        "maxLength": 14,
                        "minLength": 14
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "account_comparison": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 25 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/payment_uri_parse/invoke",
    "mimeType": "application/json",
    "description": "Parse bounded EIP-681, bitcoin, or solana payment URI fields without initiating payment.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "payment_uri_request": "{\"uri\":\"ethereum:0x0000000000000000000000000000000000000001@8453?value=1000\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Parsing never validates the recipient, amount, token, or payment intent."
              ],
              "service_id": "payment_uri_parse",
              "evidence_scope": "caller_supplied_data",
              "parsed_payment_uri": "{\"chain_id\":\"8453\",\"function_name\":null,\"parameters\":{\"value\":\"1000\"},\"scheme\":\"ethereum\",\"target\":\"0x0000000000000000000000000000000000000001\"}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "payment_uri_parse",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "df1ab94d311bc0d8f9234d4ef121716806b7a0d863766eb0def613c3045b9d12",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "payment_uri_request"
                ],
                "properties": {
                  "payment_uri_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "parsed_payment_uri",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "payment_uri_parse",
                        "maxLength": 17,
                        "minLength": 17
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "parsed_payment_uri": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 26 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/abi_function_encode/invoke",
    "mimeType": "application/json",
    "description": "Encode function calldata from a supplied ABI, function name, and arguments.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "abi_function_encode_request": "{\"abi\":[{\"type\":\"constructor\",\"stateMutability\":\"nonpayable\",\"inputs\":[{\"name\":\"initial\",\"type\":\"uint256\"}]},{\"type\":\"function\",\"name\":\"balanceOf\",\"stateMutability\":\"view\",\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"outputs\":[{\"name\":\"balance\",\"type\":\"uint256\"}]},{\"type\":\"event\",\"name\":\"Changed\",\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"account\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}]},{\"type\":\"error\",\"name\":\"Insufficient\",\"inputs\":[{\"name\":\"available\",\"type\":\"uint256\"}]}],\"function_name\":\"balanceOf\",\"args\":[\"0x0000000000000000000000000000000000000001\"]}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Encoding does not simulate execution or prove contract compatibility."
              ],
              "service_id": "abi_function_encode",
              "evidence_scope": "caller_supplied_data",
              "encoded_function_data": "{\"data\":\"0x70a082310000000000000000000000000000000000000000000000000000000000000001\",\"signature\":\"balanceOf(address)\"}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "abi_function_encode",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "b343fb3b0eb1d9351456207655f12dfa4440e28ddf662cc09cd1fe94de7fa2d0",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "abi_function_encode_request"
                ],
                "properties": {
                  "abi_function_encode_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "encoded_function_data",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "abi_function_encode",
                        "maxLength": 19,
                        "minLength": 19
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "encoded_function_data": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 27 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/erc20_transfer_decode/invoke",
    "mimeType": "application/json",
    "description": "Decode supplied ERC-20 transfer calldata or log data.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "erc20_transfer_request": "{\"kind\":\"calldata\",\"data\":\"0xa9059cbb0000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000a\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Decoding does not prove token standard compliance or transfer success."
              ],
              "service_id": "erc20_transfer_decode",
              "evidence_scope": "caller_supplied_data",
              "decoded_erc20_transfer": "{\"args\":[\"0x0000000000000000000000000000000000000002\",\"10\"],\"kind\":\"calldata\",\"operation\":\"transfer\"}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "erc20_transfer_decode",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "15bea730a9255c4a291fc108c7d928b1821ecf8d893077a511fd2eb7e23acd4e",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "erc20_transfer_request"
                ],
                "properties": {
                  "erc20_transfer_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "decoded_erc20_transfer",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "erc20_transfer_decode",
                        "maxLength": 21,
                        "minLength": 21
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "decoded_erc20_transfer": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 28 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/wallet_allowance_exposure/invoke",
    "mimeType": "application/json",
    "description": "Summarize supplied token allowance exposure by spender and flag unlimited values.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "wallet_allowance_request": "{\"allowances\":[{\"token\":\"0x0000000000000000000000000000000000000001\",\"spender\":\"0x0000000000000000000000000000000000000002\",\"amount_atomic\":\"115792089237316195423570985008687907853269984665640564039457584007913129639935\"}]}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "The service does not query or revoke allowances."
              ],
              "service_id": "wallet_allowance_exposure",
              "evidence_scope": "caller_supplied_data",
              "wallet_allowance_exposure": "{\"allowance_count\":1,\"allowances\":[{\"amount_atomic\":\"115792089237316195423570985008687907853269984665640564039457584007913129639935\",\"spender\":\"0x0000000000000000000000000000000000000002\",\"token\":\"0x0000000000000000000000000000000000000001\",\"unlimited\":true}],\"unlimited_count\":1}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "wallet_allowance_exposure",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "ea42f127d5822b9ce4960f01ed8a677b99c8eb6f41a5b2e3ddc7aea9a98b1c28",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "wallet_allowance_request"
                ],
                "properties": {
                  "wallet_allowance_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "wallet_allowance_exposure",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "wallet_allowance_exposure",
                        "maxLength": 25,
                        "minLength": 25
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "wallet_allowance_exposure": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 29 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/eoa_signature_verify/invoke",
    "mimeType": "application/json",
    "description": "Verify a supplied EVM message signature against a supplied address.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "eoa_signature_request": "{\"address\":\"0x0000000000000000000000000000000000000001\",\"message\":\"test\",\"signature\":\"0x010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101011b\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Verification proves key control for the supplied message only, not identity or authorization."
              ],
              "service_id": "eoa_signature_verify",
              "evidence_scope": "caller_supplied_data",
              "eoa_signature_verification": "{\"address\":\"0x0000000000000000000000000000000000000001\",\"encoding\":\"utf8\",\"valid\":false}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "eoa_signature_verify",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "5fb43bede3ca02db81d5e0fc5a48a9e770301df3402aca41ef7f62d1e73cf6c8",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "eoa_signature_request"
                ],
                "properties": {
                  "eoa_signature_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "eoa_signature_verification",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "eoa_signature_verify",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "eoa_signature_verification": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 30 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/merkle_proof_verify/invoke",
    "mimeType": "application/json",
    "description": "Verify a supplied Keccak-256 Merkle proof with explicit sorted or positional pairing.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "merkle_proof_request": "{\"leaf\":\"0x5fe7f977e71dba2ea1a68e21057beebb9be2ac30c6410aa38d4f3fbe41dcffd2\",\"proof\":[\"0xf2ee15ea639b73fa3db9b34a245bdfa015c260c598b211bf05a1ecc4b3e3b4f2\"],\"root\":\"0x71d8979cbfae9b197a4fbcc7d387b1fae9560e2f284d30b4e90c80f6bc074f57\",\"sorted_pairs\":true}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Proof validity does not authenticate the meaning of the leaf."
              ],
              "service_id": "merkle_proof_verify",
              "evidence_scope": "caller_supplied_data",
              "merkle_proof_verification": "{\"computed_root\":\"0x71d8979cbfae9b197a4fbcc7d387b1fae9560e2f284d30b4e90c80f6bc074f57\",\"expected_root\":\"0x71d8979cbfae9b197a4fbcc7d387b1fae9560e2f284d30b4e90c80f6bc074f57\",\"sorted_pairs\":true,\"valid\":true}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "merkle_proof_verify",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "3e3976e3b41746abaeac3bddf91a64cdd61ea9aaba49f5dc6471e94c2086f3a4",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "merkle_proof_request"
                ],
                "properties": {
                  "merkle_proof_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "merkle_proof_verification",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "merkle_proof_verify",
                        "maxLength": 19,
                        "minLength": 19
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "merkle_proof_verification": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 31 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/defi_price_impact/invoke",
    "mimeType": "application/json",
    "description": "Calculate constant-product execution price and price impact from supplied pool state.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "price_impact_request": "{\"reserve_in\":\"1000\",\"reserve_out\":\"2000\",\"amount_in\":\"10\",\"fee_bps\":30}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Calculation is a deterministic model, not an executable quote."
              ],
              "service_id": "defi_price_impact",
              "price_impact": "{\"execution_price\":\"1.974316068794122597\",\"price_impact_percent\":\"1.284196560293\",\"spot_price\":\"2\"}",
              "evidence_scope": "caller_supplied_data"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "defi_price_impact",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "f0255c8b55c4f05e57cdb0b8ff8039b35043bf2d55a7056bfedb46b19b5a79f0",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "price_impact_request"
                ],
                "properties": {
                  "price_impact_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "price_impact",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "defi_price_impact",
                        "maxLength": 17,
                        "minLength": 17
                      },
                      "price_impact": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 32 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "15000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/bitcoin_transaction_decode/invoke",
    "mimeType": "application/json",
    "description": "Decode a bounded supplied raw Bitcoin transaction into version, inputs, outputs, witness, and locktime.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "bitcoin_transaction_request": "{\"raw_transaction\":\"0x01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff00ffffffff01e803000000000000015100000000\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Decoding does not verify signatures, scripts, inclusion, or UTXO availability."
              ],
              "service_id": "bitcoin_transaction_decode",
              "evidence_scope": "caller_supplied_data",
              "decoded_bitcoin_transaction": "{\"input_count\":1,\"inputs\":[{\"script_sig\":\"\",\"sequence\":4294967295,\"txid\":\"0000000000000000000000000000000000000000000000000000000000000000\",\"vout\":4294967295,\"witness\":[]}],\"locktime\":0,\"output_count\":1,\"outputs\":[{\"script_pub_key\":\"51\",\"script_type\":\"unknown_or_nonstandard\",\"value_sats\":\"1000\"}],\"segwit\":false,\"version\":1}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "bitcoin_transaction_decode",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "15000",
              "resultSha256": "07cbdd20ea6a9af32984b0196d6a10d0599deb249ec5c3ec9dfe7d75ab6d740b",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "bitcoin_transaction_request"
                ],
                "properties": {
                  "bitcoin_transaction_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "decoded_bitcoin_transaction",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "bitcoin_transaction_decode",
                        "maxLength": 26,
                        "minLength": 26
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "decoded_bitcoin_transaction": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 33 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/solana_legacy_transaction_decode/invoke",
    "mimeType": "application/json",
    "description": "Turn serialized legacy transaction bytes into reviewable message, signature, account, and instruction fields.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "request_json": "{\"transaction_base64\":\"AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Decoding supplied bytes does not prove inclusion, execution, or finality."
              ],
              "service_id": "solana_legacy_transaction_decode",
              "analysis_json": "{\"address_table_lookups\":[],\"compiled_instructions\":[],\"header\":{\"numReadonlySignedAccounts\":0,\"numReadonlyUnsignedAccounts\":0,\"numRequiredSignatures\":1},\"recent_blockhash\":\"11111111111111111111111111111111\",\"serialized_bytes\":134,\"signature_count\":1,\"static_account_keys\":[\"11111111111111111111111111111111\"],\"version\":\"legacy\"}",
              "evidence_scope": "caller_supplied_data",
              "analyzed_network": "solana"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "solana_legacy_transaction_decode",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "d00b2d88e1ec88541f155899853f0dd7b2facc0a4f5998db39d03a16dda268ac",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "request_json"
                ],
                "properties": {
                  "request_json": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "analyzed_network",
                      "analysis_json",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "solana_legacy_transaction_decode",
                        "maxLength": 32,
                        "minLength": 32
                      },
                      "analysis_json": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 2
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "analyzed_network": {
                        "type": "string",
                        "const": "solana",
                        "maxLength": 6,
                        "minLength": 6
                      }
                    },
                    "maxProperties": 5,
                    "minProperties": 5,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 34 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/base_eip1559_transaction_decode/invoke",
    "mimeType": "application/json",
    "description": "Decode supplied type-2 transaction fields and enforce Base chain identity.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "request_json": "{\"transaction\":{\"hash\":\"0x1111111111111111111111111111111111111111111111111111111111111111\",\"transaction_hash\":\"0x1111111111111111111111111111111111111111111111111111111111111111\",\"from\":\"0x0000000000000000000000000000000000000001\",\"to\":\"0x0000000000000000000000000000000000000002\",\"chain_id\":\"8453\",\"type\":\"0x2\",\"nonce\":\"1\",\"gas_limit\":\"21000\",\"gas_used\":\"21000\",\"base_fee_per_gas\":\"100\",\"max_fee_per_gas\":\"120\",\"max_priority_fee_per_gas\":\"5\",\"effective_gas_price\":\"105\",\"value\":\"0\",\"data\":\"0xa9059cbb00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000064\",\"instructions\":[],\"account_keys\":[]}}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Unsigned or supplied transaction data does not prove broadcast or inclusion."
              ],
              "service_id": "base_eip1559_transaction_decode",
              "analysis_json": "{\"calldata_bytes\":68,\"chain_id\":\"8453\",\"data\":\"0xa9059cbb00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000064\",\"gas_limit\":\"21000\",\"max_fee_per_gas\":\"120\",\"max_priority_fee_per_gas\":\"5\",\"network\":\"base_mainnet\",\"network_context\":{\"accepted_chain_ids\":[\"8453\",\"84532\"],\"deposit_transaction_type\":\"0x7e\",\"fee_model\":\"L2 execution plus caller-supplied L1 data/operator components\",\"protocol_family\":\"OP Stack\"},\"nonce\":\"1\",\"to\":\"0x0000000000000000000000000000000000000002\",\"type\":\"0x2\",\"value\":\"0\"}",
              "evidence_scope": "caller_supplied_data",
              "analyzed_network": "base"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "base_eip1559_transaction_decode",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "b8f008e1ad2ebd54e69aeb7548fe98c69fb72d2571835fedd48ef59f441e3b30",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "request_json"
                ],
                "properties": {
                  "request_json": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "analyzed_network",
                      "analysis_json",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "base_eip1559_transaction_decode",
                        "maxLength": 31,
                        "minLength": 31
                      },
                      "analysis_json": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 2
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "analyzed_network": {
                        "type": "string",
                        "const": "base",
                        "maxLength": 4,
                        "minLength": 4
                      }
                    },
                    "maxProperties": 5,
                    "minProperties": 5,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 35 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/polygon_transaction_decode/invoke",
    "mimeType": "application/json",
    "description": "Normalize supplied Polygon transaction fields with chain and type validation.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "request_json": "{\"transaction\":{\"hash\":\"0x1111111111111111111111111111111111111111111111111111111111111111\",\"transaction_hash\":\"0x1111111111111111111111111111111111111111111111111111111111111111\",\"from\":\"0x0000000000000000000000000000000000000001\",\"to\":\"0x0000000000000000000000000000000000000002\",\"chain_id\":\"137\",\"type\":\"0x2\",\"nonce\":\"1\",\"gas_limit\":\"21000\",\"gas_used\":\"21000\",\"base_fee_per_gas\":\"100\",\"max_fee_per_gas\":\"120\",\"max_priority_fee_per_gas\":\"5\",\"effective_gas_price\":\"105\",\"value\":\"0\",\"data\":\"0xa9059cbb00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000064\",\"instructions\":[],\"account_keys\":[]}}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Does not prove broadcast, inclusion, or finality."
              ],
              "service_id": "polygon_transaction_decode",
              "analysis_json": "{\"calldata_bytes\":68,\"chain_id\":\"137\",\"data\":\"0xa9059cbb00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000064\",\"gas_limit\":\"21000\",\"max_fee_per_gas\":\"120\",\"max_priority_fee_per_gas\":\"5\",\"network\":\"polygon_pos_mainnet\",\"network_context\":{\"accepted_chain_ids\":[\"137\",\"80002\"],\"bridge_model\":\"root-child state sync plus checkpoint evidence\",\"completion_policy\":\"never inferred without supplied evidence\",\"protocol_family\":\"Polygon PoS\"},\"nonce\":\"1\",\"to\":\"0x0000000000000000000000000000000000000002\",\"type\":\"0x2\",\"value\":\"0\"}",
              "evidence_scope": "caller_supplied_data",
              "analyzed_network": "polygon"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "polygon_transaction_decode",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "7db0eef668af2e9ea5b1292f5a630e3eecc4560c0529c747b5d699657bfa9c96",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "request_json"
                ],
                "properties": {
                  "request_json": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "analyzed_network",
                      "analysis_json",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "polygon_transaction_decode",
                        "maxLength": 26,
                        "minLength": 26
                      },
                      "analysis_json": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 2
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "analyzed_network": {
                        "type": "string",
                        "const": "polygon",
                        "maxLength": 7,
                        "minLength": 7
                      }
                    },
                    "maxProperties": 5,
                    "minProperties": 5,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 36 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/prompt_instruction_conflict_detect/invoke",
    "mimeType": "application/json",
    "description": "Prompt Instruction Conflict Detect performs a bounded deterministic prompt instruction conflict detect operation over caller-supplied prompts or model outputs.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "request_json": "{\"example\":\"schema-valid caller-supplied data\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "service_id": "prompt_instruction_conflict_detect",
              "analysis_json": "{\"example\":\"schema-valid caller-supplied data\"}",
              "evidence_scope": "caller_supplied_data"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "prompt_instruction_conflict_detect",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "11de2d35cbdea149b84900382222c1c169b0f097ea592c73afd677256d1f7cbf",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "request_json"
                ],
                "properties": {
                  "request_json": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "analysis_json",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "prompt_instruction_conflict_detect",
                        "maxLength": 34,
                        "minLength": 34
                      },
                      "analysis_json": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 2
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 37 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/llm_response_schema_validate/invoke",
    "mimeType": "application/json",
    "description": "Llm Response Schema Validate performs a bounded deterministic llm response schema validate operation over caller-supplied prompts or model outputs.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "request_json": "{\"example\":\"schema-valid caller-supplied data\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "service_id": "llm_response_schema_validate",
              "analysis_json": "{\"example\":\"schema-valid caller-supplied data\"}",
              "evidence_scope": "caller_supplied_data"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "llm_response_schema_validate",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "96eda6321d55be5af1bceb5cc506ca685922635a7cdbe2635bd1f5b7eabd45c7",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "request_json"
                ],
                "properties": {
                  "request_json": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "analysis_json",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "llm_response_schema_validate",
                        "maxLength": 28,
                        "minLength": 28
                      },
                      "analysis_json": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 2
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 38 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/agent_tool_schema_validate/invoke",
    "mimeType": "application/json",
    "description": "Agent Tool Schema Validate performs a bounded deterministic agent tool schema validate operation over caller-supplied agent definitions and traces.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "request_json": "{\"example\":\"schema-valid caller-supplied data\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "service_id": "agent_tool_schema_validate",
              "analysis_json": "{\"example\":\"schema-valid caller-supplied data\"}",
              "evidence_scope": "caller_supplied_data"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "agent_tool_schema_validate",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "a838718609a8352d7307b0b84ce4e18c656b080415fdc8688fc066d0aa53b41a",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "request_json"
                ],
                "properties": {
                  "request_json": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "analysis_json",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "agent_tool_schema_validate",
                        "maxLength": 26,
                        "minLength": 26
                      },
                      "analysis_json": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 2
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 39 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "25000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/search_result_quality_report/invoke",
    "mimeType": "application/json",
    "description": "Search Result Quality Report performs a bounded deterministic search result quality report operation over caller-supplied search queries and result sets.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "request_json": "{\"example\":\"schema-valid caller-supplied data\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "service_id": "search_result_quality_report",
              "analysis_json": "{\"example\":\"schema-valid caller-supplied data\"}",
              "evidence_scope": "caller_supplied_data"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "search_result_quality_report",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "25000",
              "resultSha256": "e0f0dfccecab75820e1a39b0f6380bb387952afd14ddb959da488e945eb6ff47",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "request_json"
                ],
                "properties": {
                  "request_json": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "analysis_json",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "search_result_quality_report",
                        "maxLength": 28,
                        "minLength": 28
                      },
                      "analysis_json": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 2
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 40 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/json_schema_validate/invoke",
    "mimeType": "application/json",
    "description": "Validates a supplied canonical JSON value against a supplied bounded JSON Schema locally with normalized deterministic errors.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "value": {
              "example": true
            },
            "schema": {
              "type": "object"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "valid": false,
              "errors": [
                {
                  "keyword": "example",
                  "message": "example",
                  "paramsJson": "example",
                  "schemaPath": "example",
                  "instancePath": "example"
                }
              ],
              "schemaPaths": [
                "example"
              ],
              "failingPaths": [
                "example"
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "json_schema_validate",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "372d9dab8e103a1ba952f0bb57c18723365bf22f64adf5cc7c2d5e5f9c9923c4",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "value",
                  "schema"
                ],
                "properties": {
                  "value": {
                    "type": [
                      "object",
                      "array",
                      "string",
                      "number",
                      "boolean",
                      "null"
                    ],
                    "description": "The bounded JSON value to validate."
                  },
                  "schema": {
                    "type": [
                      "object",
                      "boolean"
                    ],
                    "description": "The bounded JSON Schema object or boolean schema."
                  }
                },
                "maxProperties": 2,
                "minProperties": 2,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "valid",
                      "errors",
                      "failingPaths",
                      "schemaPaths"
                    ],
                    "properties": {
                      "valid": {
                        "type": "boolean"
                      },
                      "errors": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "keyword",
                            "instancePath",
                            "schemaPath",
                            "message",
                            "paramsJson"
                          ],
                          "properties": {
                            "keyword": {
                              "type": "string",
                              "maxLength": 128,
                              "minLength": 1
                            },
                            "message": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 1
                            },
                            "paramsJson": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 2
                            },
                            "schemaPath": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 0
                            },
                            "instancePath": {
                              "type": "string",
                              "maxLength": 2048,
                              "minLength": 0
                            }
                          },
                          "maxProperties": 5,
                          "minProperties": 5,
                          "additionalProperties": false
                        },
                        "maxItems": 64,
                        "minItems": 0
                      },
                      "schemaPaths": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 2048,
                          "minLength": 0
                        },
                        "maxItems": 64,
                        "minItems": 0
                      },
                      "failingPaths": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 2048,
                          "minLength": 0
                        },
                        "maxItems": 64,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 41 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/text_deduplicate/invoke",
    "mimeType": "application/json",
    "description": "Detects exact and normalized duplicate text blocks using deterministic hashes while retaining canonical representatives and source order.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "items": [
              "example",
              "example"
            ]
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "itemCount": 1,
              "retainedOrder": [
                0
              ],
              "exactDuplicateGroups": [
                "example"
              ],
              "canonicalRepresentatives": [
                {
                  "text": "Example caller-supplied content.",
                  "ordinal": 0,
                  "exactHash": "0000000000000000000000000000000000000000000000000000000000000000",
                  "normalizedHash": "0000000000000000000000000000000000000000000000000000000000000000"
                }
              ],
              "normalizedDuplicateGroups": [
                "example"
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "text_deduplicate",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "a4de56c0c6db65a7f92cfe363edd6deecdc15d4ff6e95cfff323ae8db68c24d5",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "items": {
                    "type": "array",
                    "items": {
                      "type": "string",
                      "maxLength": 65536,
                      "minLength": 0
                    },
                    "maxItems": 256,
                    "minItems": 1
                  },
                  "document": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "caseSensitive": {
                    "type": "boolean"
                  }
                },
                "maxProperties": 2,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "itemCount",
                      "exactDuplicateGroups",
                      "normalizedDuplicateGroups",
                      "canonicalRepresentatives",
                      "retainedOrder"
                    ],
                    "properties": {
                      "itemCount": {
                        "type": "integer",
                        "maximum": 256,
                        "minimum": 1
                      },
                      "retainedOrder": {
                        "type": "array",
                        "items": {
                          "type": "integer",
                          "maximum": 255,
                          "minimum": 0
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "exactDuplicateGroups": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 8192,
                          "minLength": 2
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "canonicalRepresentatives": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "ordinal",
                            "text",
                            "exactHash",
                            "normalizedHash"
                          ],
                          "properties": {
                            "text": {
                              "type": "string",
                              "maxLength": 65536,
                              "minLength": 0
                            },
                            "ordinal": {
                              "type": "integer",
                              "maximum": 255,
                              "minimum": 0
                            },
                            "exactHash": {
                              "type": "string",
                              "pattern": "^[0-9a-f]{64}$",
                              "maxLength": 64,
                              "minLength": 64
                            },
                            "normalizedHash": {
                              "type": "string",
                              "pattern": "^[0-9a-f]{64}$",
                              "maxLength": 64,
                              "minLength": 64
                            }
                          },
                          "maxProperties": 4,
                          "minProperties": 4,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "normalizedDuplicateGroups": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 8192,
                          "minLength": 2
                        },
                        "maxItems": 256,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 5,
                    "minProperties": 5,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 42 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/document_diff/invoke",
    "mimeType": "application/json",
    "description": "Compares text or Markdown by deterministic heading-aware sections without semantic inference or an LLM.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "after": "# After",
            "before": "# Before"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "summary": {
                "added": 0,
                "changed": 0,
                "removed": 0
              },
              "afterHash": "0000000000000000000000000000000000000000000000000000000000000000",
              "beforeHash": "0000000000000000000000000000000000000000000000000000000000000000",
              "addedSections": [
                {
                  "hash": "example000000000000000000000000000000000000000000000000000000000",
                  "text": "Example caller-supplied content.",
                  "heading": "example",
                  "lineCount": 0
                }
              ],
              "afterLineCount": 0,
              "beforeLineCount": 0,
              "changedSections": [
                {
                  "heading": "example",
                  "afterHash": "example000000000000000000000000000000000000000000000000000000000",
                  "afterText": "example",
                  "beforeHash": "example000000000000000000000000000000000000000000000000000000000",
                  "beforeText": "example"
                }
              ],
              "removedSections": [
                {
                  "hash": "example000000000000000000000000000000000000000000000000000000000",
                  "text": "Example caller-supplied content.",
                  "heading": "example",
                  "lineCount": 0
                }
              ],
              "afterSectionCount": 0,
              "beforeSectionCount": 0
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "document_diff",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "20000",
              "resultSha256": "209b1a6d14c3a45c31cfea93dff5e343947ff7274aae503f4348125e94b17916",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "before",
                  "after"
                ],
                "properties": {
                  "after": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 0
                  },
                  "before": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 0
                  }
                },
                "maxProperties": 2,
                "minProperties": 2,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "beforeHash",
                      "afterHash",
                      "beforeLineCount",
                      "afterLineCount",
                      "beforeSectionCount",
                      "afterSectionCount",
                      "addedSections",
                      "removedSections",
                      "changedSections",
                      "summary"
                    ],
                    "properties": {
                      "summary": {
                        "type": "object",
                        "required": [
                          "added",
                          "removed",
                          "changed"
                        ],
                        "properties": {
                          "added": {
                            "type": "integer",
                            "maximum": 2000,
                            "minimum": 0
                          },
                          "changed": {
                            "type": "integer",
                            "maximum": 2000,
                            "minimum": 0
                          },
                          "removed": {
                            "type": "integer",
                            "maximum": 2000,
                            "minimum": 0
                          }
                        },
                        "maxProperties": 3,
                        "minProperties": 3,
                        "additionalProperties": false
                      },
                      "afterHash": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$",
                        "maxLength": 64,
                        "minLength": 64
                      },
                      "beforeHash": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$",
                        "maxLength": 64,
                        "minLength": 64
                      },
                      "addedSections": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "heading",
                            "text",
                            "hash",
                            "lineCount"
                          ],
                          "properties": {
                            "hash": {
                              "type": "string",
                              "maxLength": 64,
                              "minLength": 64
                            },
                            "text": {
                              "type": "string",
                              "maxLength": 65536,
                              "minLength": 0
                            },
                            "heading": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 1
                            },
                            "lineCount": {
                              "type": "integer",
                              "maximum": 100000,
                              "minimum": 0
                            }
                          },
                          "maxProperties": 4,
                          "minProperties": 4,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "afterLineCount": {
                        "type": "integer",
                        "maximum": 100000,
                        "minimum": 0
                      },
                      "beforeLineCount": {
                        "type": "integer",
                        "maximum": 100000,
                        "minimum": 0
                      },
                      "changedSections": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "heading",
                            "beforeHash",
                            "afterHash",
                            "beforeText",
                            "afterText"
                          ],
                          "properties": {
                            "heading": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 1
                            },
                            "afterHash": {
                              "type": "string",
                              "maxLength": 64,
                              "minLength": 64
                            },
                            "afterText": {
                              "type": "string",
                              "maxLength": 65536,
                              "minLength": 0
                            },
                            "beforeHash": {
                              "type": "string",
                              "maxLength": 64,
                              "minLength": 64
                            },
                            "beforeText": {
                              "type": "string",
                              "maxLength": 65536,
                              "minLength": 0
                            }
                          },
                          "maxProperties": 5,
                          "minProperties": 5,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "removedSections": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "required": [
                            "heading",
                            "text",
                            "hash",
                            "lineCount"
                          ],
                          "properties": {
                            "hash": {
                              "type": "string",
                              "maxLength": 64,
                              "minLength": 64
                            },
                            "text": {
                              "type": "string",
                              "maxLength": 65536,
                              "minLength": 0
                            },
                            "heading": {
                              "type": "string",
                              "maxLength": 8192,
                              "minLength": 1
                            },
                            "lineCount": {
                              "type": "integer",
                              "maximum": 100000,
                              "minimum": 0
                            }
                          },
                          "maxProperties": 4,
                          "minProperties": 4,
                          "additionalProperties": false
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "afterSectionCount": {
                        "type": "integer",
                        "maximum": 2000,
                        "minimum": 0
                      },
                      "beforeSectionCount": {
                        "type": "integer",
                        "maximum": 2000,
                        "minimum": 0
                      }
                    },
                    "maxProperties": 10,
                    "minProperties": 10,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 43 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/csv_normalize_validate/invoke",
    "mimeType": "application/json",
    "description": "Parses and normalizes bounded CSV, TSV, or semicolon data while retaining malformed rows and validation issues.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "text": "name,value\nexample,1"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "rows": [
                [
                  "example"
                ]
              ],
              "headers": [
                "example"
              ],
              "rowCount": 0,
              "delimiter": ",",
              "normalized": "example",
              "rejectedRows": [
                {}
              ],
              "validationIssues": [
                {}
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "csv_normalize_validate",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "8307538e76cafb01585d3e2f8ca3b1bfa4a7e8749cb1324954571908d7167220",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "text"
                ],
                "properties": {
                  "text": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "delimiter": {
                    "enum": [
                      ",",
                      "\t",
                      ";"
                    ],
                    "type": "string",
                    "maxLength": 1,
                    "minLength": 1
                  },
                  "hasHeader": {
                    "type": "boolean"
                  }
                },
                "maxProperties": 3,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "headers",
                      "delimiter",
                      "rowCount",
                      "rows",
                      "validationIssues",
                      "rejectedRows",
                      "normalized"
                    ],
                    "properties": {
                      "rows": {
                        "type": "array",
                        "items": {
                          "type": "array",
                          "items": {
                            "type": "string",
                            "maxLength": 65536,
                            "minLength": 0
                          },
                          "maxItems": 256,
                          "minItems": 0
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "headers": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 8192,
                          "minLength": 0
                        },
                        "maxItems": 256,
                        "minItems": 1
                      },
                      "rowCount": {
                        "type": "integer",
                        "maximum": 10000,
                        "minimum": 0
                      },
                      "delimiter": {
                        "enum": [
                          ",",
                          ";",
                          "tab"
                        ],
                        "type": "string",
                        "maxLength": 3,
                        "minLength": 1
                      },
                      "normalized": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 0
                      },
                      "rejectedRows": {
                        "type": "array",
                        "items": {
                          "type": [
                            "object"
                          ]
                        },
                        "maxItems": 256,
                        "minItems": 0
                      },
                      "validationIssues": {
                        "type": "array",
                        "items": {
                          "type": [
                            "object"
                          ]
                        },
                        "maxItems": 256,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 7,
                    "minProperties": 7,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 44 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/abi_function_decode/invoke",
    "mimeType": "application/json",
    "description": "Decode supplied function calldata against a supplied ABI.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "abi_function_decode_request": "{\"abi\":[{\"type\":\"constructor\",\"stateMutability\":\"nonpayable\",\"inputs\":[{\"name\":\"initial\",\"type\":\"uint256\"}]},{\"type\":\"function\",\"name\":\"balanceOf\",\"stateMutability\":\"view\",\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"outputs\":[{\"name\":\"balance\",\"type\":\"uint256\"}]},{\"type\":\"event\",\"name\":\"Changed\",\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"account\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}]},{\"type\":\"error\",\"name\":\"Insufficient\",\"inputs\":[{\"name\":\"available\",\"type\":\"uint256\"}]}],\"data\":\"0x70a082310000000000000000000000000000000000000000000000000000000000000001\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Decoded values reflect only the supplied ABI and bytes."
              ],
              "service_id": "abi_function_decode",
              "evidence_scope": "caller_supplied_data",
              "decoded_function_call": "{\"args\":[\"0x0000000000000000000000000000000000000001\"],\"functionName\":\"balanceOf\"}"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "abi_function_decode",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "c2309aa284a0852faed303b6b747a5d28e909d8a17831406be457670166f7988",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "abi_function_decode_request"
                ],
                "properties": {
                  "abi_function_decode_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "decoded_function_call",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "abi_function_decode",
                        "maxLength": 19,
                        "minLength": 19
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      },
                      "decoded_function_call": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 45 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/url_normalize_canonicalize/invoke",
    "mimeType": "application/json",
    "description": "Normalizes HTTP and HTTPS URL syntax deterministically without guessing an HTML canonical URL.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "HTTPS://EXAMPLE.COM/a/../b?z=2&a=1"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "path": "example",
              "query": "example",
              "origin": "example",
              "fragment": "example",
              "original": "example",
              "normalized": "example",
              "transformations": [
                "example"
              ]
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "url_normalize_canonicalize",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "34e2fa8b83011c967ff9d7be25edf69b81f4df8cff4ab28f8020a0f113e02362",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "url"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "maxLength": 2048,
                    "minLength": 1
                  },
                  "baseUrl": {
                    "type": "string",
                    "maxLength": 2048,
                    "minLength": 1
                  },
                  "removeTrackingParameters": {
                    "type": "boolean"
                  }
                },
                "maxProperties": 3,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "original",
                      "normalized",
                      "origin",
                      "path",
                      "query",
                      "fragment",
                      "transformations"
                    ],
                    "properties": {
                      "path": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 1
                      },
                      "query": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 0
                      },
                      "origin": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 1
                      },
                      "fragment": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 0
                      },
                      "original": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 1
                      },
                      "normalized": {
                        "type": "string",
                        "maxLength": 2048,
                        "minLength": 1
                      },
                      "transformations": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 128,
                          "minLength": 1
                        },
                        "maxItems": 16,
                        "minItems": 0
                      }
                    },
                    "maxProperties": 7,
                    "minProperties": 7,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 46 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/prompt_structure_analyze/invoke",
    "mimeType": "application/json",
    "description": "Prompt Structure Analyze performs a bounded deterministic prompt structure analyze operation over caller-supplied prompts or model outputs.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "request_json": "{\"example\":\"schema-valid caller-supplied data\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "service_id": "prompt_structure_analyze",
              "analysis_json": "{\"example\":\"schema-valid caller-supplied data\"}",
              "evidence_scope": "caller_supplied_data"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "prompt_structure_analyze",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "6b047b91ee7b7d1e3a2b619cfc346765179da744159ce369408d85730cb2f0df",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "request_json"
                ],
                "properties": {
                  "request_json": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "analysis_json",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "prompt_structure_analyze",
                        "maxLength": 24,
                        "minLength": 24
                      },
                      "analysis_json": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 2
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 47 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/message_hash_eip191/invoke",
    "mimeType": "application/json",
    "description": "Compute the standard EIP-191 personal-message hash for supplied text or bytes.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "message_hash_request": "{\"message\":\"SignalHarness public test vector\",\"encoding\":\"utf8\"}"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "warnings": [
                "Hashing does not sign or prove authorship."
              ],
              "service_id": "message_hash_eip191",
              "message_hash": "{\"encoding\":\"utf8\",\"hash\":\"0x43c3ce76740c0da4b23274e62f830220acfc4cb8d66dc3c373c6f58db8620442\"}",
              "evidence_scope": "caller_supplied_data"
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "message_hash_eip191",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "5000",
              "resultSha256": "8f11719349cff4ac11654fa2d877a1171776a9cc3eee1fc4857fac9b56d1829f",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
                  "message_hash_request"
                ],
                "properties": {
                  "message_hash_request": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 2
                  }
                },
                "maxProperties": 1,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "service_id",
                      "evidence_scope",
                      "message_hash",
                      "warnings"
                    ],
                    "properties": {
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 512,
                          "minLength": 1
                        },
                        "maxItems": 8,
                        "minItems": 1
                      },
                      "service_id": {
                        "type": "string",
                        "const": "message_hash_eip191",
                        "maxLength": 19,
                        "minLength": 19
                      },
                      "message_hash": {
                        "type": "string",
                        "maxLength": 65536,
                        "minLength": 1
                      },
                      "evidence_scope": {
                        "type": "string",
                        "const": "caller_supplied_data",
                        "maxLength": 20,
                        "minLength": 20
                      }
                    },
                    "maxProperties": 4,
                    "minProperties": 4,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 48 of 48

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x02DC8F414eeBBadd9a9F383e87757beAB4BB1AB0",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://signalharness.ai/api/agent/services/html_table_extract/invoke",
    "mimeType": "application/json",
    "description": "Extracts bounded HTML tables into deterministic normalized rows with captions, inferred headers, spans, text, and links.",
    "serviceName": "SignalHarness x402 Services"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "html": "<table><tr><th>Name</th></tr><tr><td>Example</td></tr></table>"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "replay": false,
            "result": {
              "tables": [
                {}
              ],
              "warnings": [
                "Verify the caller-supplied data before relying on this result."
              ],
              "tableCount": 0
            },
            "status": "succeeded",
            "receipt": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "usage": [],
              "status": "succeeded",
              "network": "eip155:8453",
              "artifacts": [],
              "endedAtMs": 0,
              "latencyMs": 0,
              "paymentId": "example-payment",
              "receiptId": "example-receipt",
              "requestId": "example-request",
              "serviceId": "html_table_extract",
              "executionId": "example-execution",
              "startedAtMs": 0,
              "amountAtomic": "10000",
              "resultSha256": "cd400000e01a923c3c36da8bd74f6c1a14a4a9c4596edb22fa6b484ef2f6a43f",
              "serviceVersion": "1.0.0",
              "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "artifacts": [],
            "requestId": "example-request",
            "executionId": "example-execution"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [],
                "properties": {
                  "url": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  },
                  "html": {
                    "type": "string",
                    "maxLength": 65536,
                    "minLength": 1
                  },
                  "baseUrl": {
                    "type": "string",
                    "pattern": "^https://",
                    "maxLength": 2048,
                    "minLength": 9
                  }
                },
                "maxProperties": 2,
                "minProperties": 1,
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "status",
                  "replay",
                  "requestId",
                  "executionId",
                  "result",
                  "receipt",
                  "artifacts"
                ],
                "properties": {
                  "replay": {
                    "type": "boolean"
                  },
                  "result": {
                    "type": "object",
                    "$schema": "https://json-schema.org/draft/2020-12/schema",
                    "required": [
                      "tableCount",
                      "tables",
                      "warnings"
                    ],
                    "properties": {
                      "tables": {
                        "type": "array",
                        "items": {
                          "type": [
                            "object"
                          ]
                        },
                        "maxItems": 64,
                        "minItems": 0
                      },
                      "warnings": {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 1024,
                          "minLength": 1
                        },
                        "maxItems": 32,
                        "minItems": 0
                      },
                      "tableCount": {
                        "type": "integer",
                        "maximum": 64,
                        "minimum": 0
                      }
                    },
                    "maxProperties": 3,
                    "minProperties": 3,
                    "additionalProperties": false
                  },
                  "status": {
                    "type": "string",
                    "const": "succeeded"
                  },
                  "receipt": {
                    "type": "object",
                    "required": [
                      "receiptId",
                      "serviceId",
                      "resultSha256"
                    ],
                    "properties": {
                      "receiptId": {
                        "type": "string"
                      },
                      "serviceId": {
                        "type": "string"
                      },
                      "resultSha256": {
                        "type": "string",
                        "pattern": "^[0-9a-f]{64}$"
                      }
                    },
                    "additionalProperties": true
                  },
                  "artifacts": {
                    "type": "array",
                    "maxItems": 0
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "executionId": {
                    "type": "string"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    },
    "payment-identifier": {
      "info": {
        "required": true
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "required"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "maxLength": 128,
            "minLength": 16
          },
          "required": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

79/100 Solid

#132 of 188 in AI. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability
99.2% uptime since 09-21
Compliance
A 13/13 checks pass
Price
$0.005 to $0.025 p34 in AI
Risk
clean no risk flag
Traction
$0.08 30d 1 buyers, top buyer 100% (address, not entity)
Last change
schema changed 17d ago 1 in 30d
13/13 compliance checks
  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

402 terms unchanged since 2026-09-21. Last up 2026-10-08.

── Site signals

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
How the score works

What the score read on this service: status degraded, 99.2% uptime 30d, 770ms response p95, x402 compliance 13 of 13, $0.005 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

It is a score inside AI, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 188 listings, this one among them: the same 188 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Settled via coinbase ($0.07, 5 tx). Traction is a conservative undercount; first settlement seen 2026-08-08.

All measured facts

What it does

330 production x402 API services for AI agents covering web/data processing, validation, AI utilities, blockchain/crypto utilities and related machine-callable capabilities.

SignalHarness.ai is a listed x402 AI API. Captured payment terms name Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.

Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.

Page rendered at . This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.

Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.

Observed daily coverage: 2026-09-09 to 2026-10-08 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Latest settlement in the assessment: . Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.

Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.

x402 List home · Services · AI

uptime · latest daily rollup
100%
uptime 7d
100%
uptime 30d
99.2%
uptime 90d
99.2%
response p95
770ms
avg response
483ms
total checks
1,457

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

price (min)
$0.005
price (max)
$0.025
category percentile (min)
p34 in AI
category percentile (max)
p37 in AI
endpoints / prices
49 / 5
model
tiered
stability
100%

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

assessment volume 30d
$0.08
exact assessment volume 30d (USD)
0.075
assessment recorded at (UTC)
2026-10-08T10:13:00.610Z
buyers 30d
1
settlements 30d
5
measured since
2026-08-08 (start of our harvest window)
last settlement
2026-09-21
top buyer share
100% of 30d volume (address, not entity)
trend 7d vs 30d
0.00x the 30d daily rate
networks
eip155:8453
volume all-time
$19.08
settlements all-time
6
median settlement 30d
$0.005
max settlement 30d
$0.03

Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is part of the ranking score: a higher share lowers the traction part of the score, by up to half when one address holds all 30d volume.

member since
2026-09-21
Recent checks
Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)StatusHTTPResponseEndpoints
Online402334ms46
Online402327ms45
Online402664ms45
Online402506ms46
Online402499ms45
Online402466ms45
Online402497ms46
Online402482ms46
Online402474ms46
Online402698ms44
Online402519ms45
Online402653ms45
Online402535ms45
Online402688ms45
Online402613ms45
Online402552ms45
Online402593ms42
Online402589ms43

Changes1 in 30d

Latest 1 recorded changes, up to 10 in the last 30 days; newest first; observation times in UTC
Observed at (UTC)ChangeEvidence
schema changed

endpoint added POST /api/agent/services/artifact_verify/invoke

endpoint added POST /api/agent/services/schema_org_extract/invoke

endpoint added POST /api/agent/services/structured_extract/invoke

endpoint added POST /api/agent/services/web_extract/invoke

schema added POST /api/agent/services/artifact_verify/invoke exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"decimals":6,"name":"USD Coin","symbol":"USDC","version":"2"}

schema added POST /api/agent/services/schema_org_extract/invoke exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"decimals":6,"name":"USD Coin","symbol":"USDC","version":"2"}

schema added POST /api/agent/services/structured_extract/invoke exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"decimals":6,"name":"USD Coin","symbol":"USDC","version":"2"}

schema added POST /api/agent/services/web_extract/invoke exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"decimals":6,"name":"USD Coin","symbol":"USDC","version":"2"}

all changes

Over time

On-chain volume daily snapshots, USD 30d: $0.08, peak $0.06 on 09-21
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 1 of 18 completed days below 100%
uptime below 100%, to scale
Volume 30d
$0.08
Uptime
1 of 18 completed days below 100%
Daily on-chain settlement volume in US dollars, 2026-09-09 to 2026-10-08; highest day $0.06 on 09-21; 17 days have no data in the payload; distinct buyers per day
More charts
Response time daily average, ms min 408ms, avg 484ms, max 613ms

09-09 to 10-08* UTC

Scores over time

x402 compliance low 13/13, high 13/13

09-09 to 10-08* UTC

Price percentile in AI own low to high; exact values below

09-09 to 10-08* UTC

Site signals present (of 6) own low to high; exact values below

09-09 to 10-08* UTC

Scores: one day per column, 09-09 to 10-08*, on the columns of Response time. Uptime held below 100% on some days in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/signalharness-ai/price, /scores, /volume and /buyers.

Values

* today so far, partial (UTC).

The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.

Daily snapshot total, 30d: $0.08, peak $0.06 on 09-21. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.

Daily address snapshots: 2026-09-09 to 2026-10-08 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here.

Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.

Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-09-20 to 2026-10-08: address settlement volume in USD, distinct buyer and settlement counts, uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
DayVolumeBuyersSettlementsUptimeResponseCompliancePrice percentileSite signals
2026-09-20$0.0213no datano datano datano datano data
2026-09-21$0.0612100%474.47ms13/13p345/6
2026-09-22no datano datano data100%426.88ms13/13p345/6
2026-09-23no datano datano data100%484.64ms13/13p345/6
2026-09-24no datano datano data100%481.97ms13/13p345/6
2026-09-25no datano datano data100%470.59ms13/13p345/6
2026-09-26no datano datano data100%455.79ms13/13p335/6
2026-09-27no datano datano data100%408.41ms13/13p335/6
2026-09-28no datano datano data100%440.49ms13/13p335/6
2026-09-29no datano datano data100%463.02ms13/13p335/6
2026-09-30no datano datano data72.09%435.52ms13/13p345/6
2026-10-01no datano datano data100%423.74ms13/13p345/6
2026-10-02no datano datano data100%510.64ms13/13p345/6
2026-10-03no datano datano data100%538.62ms13/13p345/6
2026-10-04no datano datano data100%457.86ms13/13p345/6
2026-10-05no datano datano data100%484.79ms13/13p345/6
2026-10-06no datano datano data100%577.39ms13/13p345/6
2026-10-07no datano datano data100%569.02ms13/13p345/6
2026-10-08*no datano datano data100%613.04ms13/13p345/6

Alternatives in AI

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Agent402.tools strong 93/100 99.8% up 30d $153.11 30d
GlianaAI strong 93/100 100% up 30d $73.62 30d
DexL Agents solid 91/100 100% up 30d $15.17 30d

5 of 187 other ranked services in AI, ordered by the same measured score.

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