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zFinia Machine API - Intelligence and Contract Utilities

payment-readydegraded

payment-ready until 2026-10-15

Five pay-per-call services for agents: machine-economy changes since a cursor with provenance; flat-field data compatibility checks; WCAG colour-pair contrast calculation; Product JSON-LD/Offer evidence extraction from supplied HTML; and merchant service contract regression reports.

www.zfinia.com ↗

Call it x402 v2

x402 v2

Base URL
https://api.zfinia.com
Payment
x402 v2, header channel
$ curl -i -X POST 'https://api.zfinia.com/v1/intelligence/changes-since'

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

Endpoints 4 paid routes on api.zfinia.com

POST/v1/intelligence/changes-sinceBase$0.01since 09-14
POST/x402/v1/accessibility-contrast-calculatorBase$0.001since 09-21
POST/x402/v1/catalog-offer-evidence-extractorBase$0.10since 09-21
POST/x402/v1/data-compatibility-checkerBase$0.003since 09-21

Prices as captured in the 402 response: median $0.0065 across the 4 endpoints.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
MethodPathDescriptionPriceNetworkAsset402 channelCaptured
POST/v1/intelligence/changes-sinceNo description$0.01BaseUSDCheadersince 09-14
POST/x402/v1/accessibility-contrast-calculatorNo description$0.001BaseUSDCheadersince 09-21
POST/x402/v1/catalog-offer-evidence-extractorNo description$0.10BaseUSDCheadersince 09-21
POST/x402/v1/data-compatibility-checkerNo description$0.003BaseUSDCheadersince 09-21

Payment evidence

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

First of 4 payloads captured by the monitor.

230 lines, scroll inside

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://api.zfinia.com/v1/intelligence/changes-since",
    "mimeType": "application/json",
    "description": "When your agent already checked zFinia and needs only material machine-economy changes since its last cursor, use this tool. Returns delta items and nextCursor for the next poll; empty items is valid. Pay 10000 atomic USDC on Base via exact x402. MCP does not pay."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "cursor": "2026-09-01T00:00:00.000Z",
            "maxItems": 3,
            "include_high_resolution": true
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "count": 1,
            "items": [
              {
                "eventId": "evt_x402_launch_20250506",
                "summary": "x402 uses HTTP 402 so agents can pay for APIs without accounts.",
                "headline": "Coinbase launches x402 HTTP-native payments",
                "freshness": "archive",
                "evidenceTier": "TIER_A"
              }
            ],
            "since": "2026-09-01T00:00:00.000Z",
            "schema": "zfinia-newswire-1",
            "product": "machine_economy_changes_since",
            "truncated": false,
            "nextCursor": "2026-09-07T00:00:00.000Z",
            "request_id": "example-request",
            "service_id": "machine_economy_changes_since",
            "generatedAt": "2026-09-07T00:00:00.000Z",
            "priceAtomic": "10000",
            "usageRights": "Caller may use returned JSON for their own systems.",
            "schemaVersion": "zfinia-newswire-1",
            "highResolution": true,
            "marketMovements": {
              "resourcesDelta": 0
            },
            "service_version": "1"
          }
        }
      },
      "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",
                "anyOf": [
                  {
                    "required": [
                      "cursor"
                    ]
                  },
                  {
                    "required": [
                      "since"
                    ]
                  }
                ],
                "properties": {
                  "since": {
                    "type": "string",
                    "maxLength": 2048,
                    "minLength": 1,
                    "description": "Alias of cursor. Use the previous nextCursor so only later material changes are returned."
                  },
                  "cursor": {
                    "type": "string",
                    "maxLength": 2048,
                    "minLength": 1,
                    "description": "Previous nextCursor (opaque or ISO-8601). Required for the paid delta unless since is set. Pass this back on the next poll."
                  },
                  "maxItems": {
                    "type": "integer",
                    "maximum": 50,
                    "minimum": 1
                  },
                  "include_high_resolution": {
                    "type": "boolean",
                    "description": "When true, paid items include full evidence fields already present on the public newswire item."
                  }
                },
                "description": "Paid delta for a caller that already has a zFinia cursor. Supply cursor or since (the previous nextCursor).",
                "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": [
                  "request_id",
                  "service_id",
                  "service_version",
                  "schema",
                  "generatedAt",
                  "since",
                  "nextCursor",
                  "count",
                  "items",
                  "truncated",
                  "usageRights"
                ],
                "properties": {
                  "count": {
                    "type": "integer"
                  },
                  "items": {
                    "type": "array"
                  },
                  "since": {
                    "type": "string"
                  },
                  "schema": {
                    "type": "string"
                  },
                  "product": {
                    "type": "string"
                  },
                  "truncated": {
                    "type": "boolean"
                  },
                  "nextCursor": {
                    "type": "string"
                  },
                  "request_id": {
                    "type": "string",
                    "description": "Delivery request identifier; also returned in x-foundry-request-id."
                  },
                  "service_id": {
                    "type": "string",
                    "description": "Canonical service identifier."
                  },
                  "generatedAt": {
                    "type": "string"
                  },
                  "priceAtomic": {
                    "type": "string"
                  },
                  "usageRights": {
                    "type": "string"
                  },
                  "schemaVersion": {
                    "type": "string"
                  },
                  "highResolution": {
                    "type": "boolean"
                  },
                  "marketMovements": {
                    "type": "object"
                  },
                  "service_version": {
                    "type": "string",
                    "description": "Version of the invoked service."
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}
Other captured 402 responses (3)

Captured payload 2 of 4

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://api.zfinia.com/x402/v1/data-compatibility-checker",
    "mimeType": "application/json",
    "description": "Gate a candidate flat field contract before ingestion, migration, CI deployment, or machine-to-machine handoff; returns deterministic incompatibility codes and remediation actions for caller-supplied fields without fetching data or claiming full API validation."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "source_fields": [
              {
                "name": "order_id",
                "type": "string",
                "nullable": false,
                "required": true
              },
              {
                "name": "customer_id",
                "type": "string",
                "nullable": true,
                "required": true
              },
              {
                "name": "amount_cents",
                "type": "string",
                "nullable": false,
                "required": true
              },
              {
                "name": "created_at",
                "type": "string",
                "nullable": false,
                "required": true
              }
            ],
            "target_fields": [
              {
                "name": "order_id",
                "type": "string",
                "nullable": false,
                "required": true
              },
              {
                "name": "customer_id",
                "type": "string",
                "nullable": false,
                "required": true
              },
              {
                "name": "amount_cents",
                "type": "integer",
                "nullable": false,
                "required": true
              },
              {
                "name": "currency",
                "type": "string",
                "nullable": false,
                "required": true
              },
              {
                "name": "created_at",
                "type": "string",
                "nullable": false,
                "required": true
              }
            ],
            "comparison_mode": "backward_compatible",
            "canonicalization": "exact",
            "contract_version": "1"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "issues": [
              {
                "code": "TYPE_MISMATCH",
                "field": "amount_cents",
                "severity": "error",
                "source_type": "string",
                "target_type": "integer"
              },
              {
                "code": "MISSING_REQUIRED_FIELD",
                "field": "currency",
                "severity": "error"
              },
              {
                "code": "NULLABILITY_NARROWING",
                "field": "customer_id",
                "severity": "warning"
              }
            ],
            "compatible": false,
            "request_id": "example-request",
            "service_id": "data_compatibility_checker",
            "assumptions": [
              "Source fields represent data offered by the caller; target fields represent the receiving contract."
            ],
            "issue_count": 3,
            "limitations": [
              "Structural field compatibility only; values, nested object shapes, semantic meaning, API behavior, and agent-output quality are not inspected."
            ],
            "remediations": [
              {
                "code": "TYPE_MISMATCH",
                "field": "amount_cents",
                "action": "CHANGE_SOURCE_FIELD_TYPE"
              },
              {
                "code": "MISSING_REQUIRED_FIELD",
                "field": "currency",
                "action": "ADD_REQUIRED_SOURCE_FIELD"
              },
              {
                "code": "NULLABILITY_NARROWING",
                "field": "customer_id",
                "action": "DISALLOW_NULL_SOURCE_VALUES"
              }
            ],
            "comparison_mode": "backward_compatible",
            "service_version": "1.0.0",
            "canonicalization": {
              "field_names": "exact",
              "changed_names": []
            },
            "contract_version": "1",
            "checked_source_fields": 4,
            "checked_target_fields": 5
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "source_fields",
                  "target_fields"
                ],
                "properties": {
                  "source_fields": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "required": [
                        "name",
                        "type",
                        "required",
                        "nullable"
                      ],
                      "properties": {
                        "name": {
                          "type": "string",
                          "pattern": "^[A-Za-z][A-Za-z0-9_]{0,63}$"
                        },
                        "type": {
                          "enum": [
                            "string",
                            "number",
                            "integer",
                            "boolean",
                            "object",
                            "array"
                          ],
                          "type": "string"
                        },
                        "nullable": {
                          "type": "boolean"
                        },
                        "required": {
                          "type": "boolean"
                        }
                      },
                      "additionalProperties": false
                    },
                    "maxItems": 100,
                    "minItems": 1
                  },
                  "target_fields": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "required": [
                        "name",
                        "type",
                        "required",
                        "nullable"
                      ],
                      "properties": {
                        "name": {
                          "type": "string",
                          "pattern": "^[A-Za-z][A-Za-z0-9_]{0,63}$"
                        },
                        "type": {
                          "enum": [
                            "string",
                            "number",
                            "integer",
                            "boolean",
                            "object",
                            "array"
                          ],
                          "type": "string"
                        },
                        "nullable": {
                          "type": "boolean"
                        },
                        "required": {
                          "type": "boolean"
                        }
                      },
                      "additionalProperties": false
                    },
                    "maxItems": 100,
                    "minItems": 1
                  },
                  "comparison_mode": {
                    "enum": [
                      "backward_compatible",
                      "exact"
                    ],
                    "type": "string"
                  },
                  "canonicalization": {
                    "enum": [
                      "exact",
                      "ascii_case_insensitive"
                    ],
                    "type": "string"
                  },
                  "contract_version": {
                    "enum": [
                      "1"
                    ],
                    "type": "string"
                  }
                },
                "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": [
                  "request_id",
                  "service_id",
                  "service_version",
                  "contract_version",
                  "comparison_mode",
                  "canonicalization",
                  "compatible",
                  "issue_count",
                  "issues",
                  "remediations",
                  "checked_source_fields",
                  "checked_target_fields",
                  "assumptions",
                  "limitations"
                ],
                "properties": {
                  "issues": {
                    "type": "array"
                  },
                  "compatible": {
                    "type": "boolean"
                  },
                  "request_id": {
                    "type": "string",
                    "description": "Delivery request identifier; also returned in x-foundry-request-id."
                  },
                  "service_id": {
                    "type": "string",
                    "description": "Canonical service identifier."
                  },
                  "assumptions": {
                    "type": "array"
                  },
                  "issue_count": {
                    "type": "integer"
                  },
                  "limitations": {
                    "type": "array"
                  },
                  "remediations": {
                    "type": "array"
                  },
                  "comparison_mode": {
                    "type": "string"
                  },
                  "service_version": {
                    "type": "string",
                    "description": "Version of the invoked service."
                  },
                  "canonicalization": {
                    "type": "object"
                  },
                  "contract_version": {
                    "type": "string"
                  },
                  "checked_source_fields": {
                    "type": "integer"
                  },
                  "checked_target_fields": {
                    "type": "integer"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 4

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://api.zfinia.com/x402/v1/accessibility-contrast-calculator",
    "mimeType": "application/json",
    "description": "Calculate WCAG 2.x sRGB contrast for one caller-supplied colour pair; no interface-wide accessibility claim is made."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "background": "#ffffff",
            "foreground": "#000000",
            "large_text": false
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "wcag_aa": true,
            "wcag_aaa": true,
            "large_text": false,
            "request_id": "example-request",
            "service_id": "accessibility_contrast_calculator",
            "limitations": [
              "Calculation uses WCAG 2.x sRGB contrast; it does not assess full interface accessibility."
            ],
            "contrast_ratio": 21,
            "service_version": "1.0.0"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "foreground",
                  "background",
                  "large_text"
                ],
                "properties": {
                  "background": {
                    "type": "string",
                    "pattern": "^#[0-9a-fA-F]{6}$"
                  },
                  "foreground": {
                    "type": "string",
                    "pattern": "^#[0-9a-fA-F]{6}$"
                  },
                  "large_text": {
                    "type": "boolean"
                  }
                },
                "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": [
                  "request_id",
                  "service_id",
                  "service_version",
                  "contrast_ratio",
                  "wcag_aa",
                  "wcag_aaa",
                  "large_text",
                  "limitations"
                ],
                "properties": {
                  "wcag_aa": {
                    "type": "boolean"
                  },
                  "wcag_aaa": {
                    "type": "boolean"
                  },
                  "large_text": {
                    "type": "boolean"
                  },
                  "request_id": {
                    "type": "string",
                    "description": "Delivery request identifier; also returned in x-foundry-request-id."
                  },
                  "service_id": {
                    "type": "string",
                    "description": "Canonical service identifier."
                  },
                  "limitations": {
                    "type": "array"
                  },
                  "contrast_ratio": {
                    "type": "number"
                  },
                  "service_version": {
                    "type": "string",
                    "description": "Version of the invoked service."
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 4 of 4

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://api.zfinia.com/x402/v1/catalog-offer-evidence-extractor",
    "mimeType": "application/json",
    "description": "Convert caller-supplied authorized public product-page HTML containing schema.org Product JSON-LD into normalized Product/Offer evidence with SHA-256 provenance; no URL fetching, browser execution, or price-currentness claim."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "html": "<script type=\"application/ld+json\">{\"@context\":\"https://schema.org\",\"@type\":\"Product\",\"name\":\"Widget\",\"offers\":{\"@type\":\"Offer\",\"price\":\"19.95\",\"priceCurrency\":\"USD\"}}</script>",
            "source_url": "https://example.com/products/widget"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "source": {
              "url": "https://example.com/products/widget",
              "sha256": "sha256-of-caller-supplied-html",
              "observed_at": "2026-08-23T00:00:00.000Z"
            },
            "product": {
              "sku": null,
              "name": "Widget",
              "brand": null,
              "offer": {
                "url": "https://example.com/products/widget",
                "price": "19.95",
                "availability": null,
                "price_currency": "USD"
              }
            },
            "version": "1.0.0",
            "evidence": {
              "method": "schema_org_product_jsonld",
              "model_calls": 0,
              "record_sha256": "sha256-of-normalized-record",
              "source_sha256": "sha256-of-caller-supplied-html",
              "network_fetches": 0
            },
            "capability_id": "public_catalog_offer_evidence"
          }
        }
      },
      "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",
                "required": [
                  "source_url",
                  "html"
                ],
                "properties": {
                  "html": {
                    "type": "string",
                    "maxLength": 262144
                  },
                  "source_url": {
                    "type": "string",
                    "format": "uri",
                    "maxLength": 2048
                  }
                },
                "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": [
                  "capability_id",
                  "version",
                  "source",
                  "product",
                  "evidence"
                ],
                "properties": {
                  "source": {
                    "type": "object"
                  },
                  "product": {
                    "type": "object"
                  },
                  "version": {
                    "type": "string"
                  },
                  "evidence": {
                    "type": "object"
                  },
                  "capability_id": {
                    "const": "public_catalog_offer_evidence"
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

79/100 Solid

#284 of 364 in Data. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability
97.5% uptime since 09-14
Compliance
A 14/14 checks pass
Price
$0.001 to $0.10 p10 in Data
Risk
clean no risk flag
Traction
$24.90 30d 11 buyers, top buyer 98% (address, not entity)
Last change
schema changed 17d ago 1 in 30d
14/14 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, 97.5% uptime 30d, 2501ms response p95, x402 compliance 14 of 14, $0.001 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 Data, 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 364 listings, this one among them: the same 364 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 ($24.90, 214 tx). Traction is a conservative undercount; first settlement seen 2026-08-18.

All measured facts

What it does

Five pay-per-call services for agents: machine-economy changes since a cursor with provenance; flat-field data compatibility checks; WCAG colour-pair contrast calculation; Product JSON-LD/Offer evidence extraction from supplied HTML; and merchant service contract regression reports. Structured outputs over x402 v2 exact USDC on Base. No URL fetching by the supplied-data utilities.

zFinia Machine API - Intelligence and Contract Utilities is a listed x402 Data 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 · Data

uptime · latest daily rollup
94.7%
uptime 7d
95.1%
uptime 30d
97.5%
uptime 90d
97.5%
response p95
2501ms
avg response
2763ms
total checks
1,993

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

price (min)
$0.001
price (max)
$0.10
category percentile (min)
p10 in Data
category percentile (max)
p71 in Data
endpoints / prices
4 / 4
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
84d
registrar
Dreamscape Networks International Pte Ltd
hosting
custom
domain created
2026-07-14

Identity facts, not a risk score.

assessment volume 30d
$24.90
exact assessment volume 30d (USD)
24.903
assessment recorded at (UTC)
2026-10-08T10:43:03.123Z
buyers 30d
11
settlements 30d
214
measured since
2026-08-18 (start of our harvest window)
last settlement
2026-10-08
top buyer share
98% of 30d volume (address, not entity)
trend 7d vs 30d
4.24x the 30d daily rate
networks
eip155:8453
volume all-time
$25.20
settlements all-time
241
median settlement 30d
$0.13
max settlement 30d
$0.30

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
2026-09-14
Recent checks
Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)StatusHTTPResponseEndpoints
Online4022501ms2
Offlineno response2501ms0
Online4021162ms4
Online4021216ms4
Online4022501ms3
Online4022501ms3
Online4021538ms4
Online4022500ms2
Online4022501ms1
Online4021135ms4
Online4021124ms4
Online4022501ms1
Online4022407ms4
Online4021541ms4
Online4022500ms2
Online4022501ms2
Online4022500ms2
Online4021267ms4

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 /x402/v1/accessibility-contrast-calculator

endpoint added POST /x402/v1/catalog-offer-evidence-extractor

endpoint added POST /x402/v1/data-compatibility-checker

schema added POST /x402/v1/accessibility-contrast-calculator exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 60 {"name":"USD Coin","version":"2"}

schema added POST /x402/v1/catalog-offer-evidence-extractor exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 60 {"name":"USD Coin","version":"2"}

schema added POST /x402/v1/data-compatibility-checker exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 60 {"name":"USD Coin","version":"2"}

all changes

Over time

On-chain volume daily snapshots, USD 30d: $24.90, peak $23.16 on 10-04
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 12 of 29 completed days below 100%
uptime below 100%, to scale uptime 0%
Volume 30d
$24.90
Uptime
12 of 29 completed days below 100%
Daily on-chain settlement volume in US dollars, 2026-09-09 to 2026-10-08; highest day $23.16 on 10-04; 15 days have no data in the payload; distinct buyers per day
More charts
Response time daily average, ms min 1905ms, avg 2767ms, max 4469ms

09-09 to 10-08* UTC

Scores over time

x402 compliance low 14/14, high 14/14

09-09 to 10-08* UTC

Price percentile in Data 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/zfinia-machine-economy-intelligence/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: $24.89, peak $23.16 on 10-04. 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. † marks a recorded $0.00 with settlements.

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, 2026-09-09 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
2026-09-09$0.00 recorded†12no datano datano datano datano data
2026-09-10no datano datano datano datano datano datano datano data
2026-09-11$0.0111no datano datano datano datano data
2026-09-12no datano datano datano datano datano datano datano data
2026-09-13no datano datano datano datano datano datano datano data
2026-09-14$0.0212100%4167.50ms14/14p595/6
2026-09-15no datano datano data98.89%4110.66ms14/14p595/6
2026-09-16no datano datano data100%4469.37ms14/14p595/6
2026-09-17$0.00 recorded†2298.89%4281.51ms14/14p605/6
2026-09-18no datano datano data97.78%4339.03ms14/14p605/6
2026-09-19$0.00 recorded†11100%4024.71ms14/14p595/6
2026-09-20$0.00 recorded†1198.89%4353.36ms14/14p595/6
2026-09-21no datano datano data98.89%2978.64ms14/14p105/6
2026-09-22no datano datano data100%2081.43ms14/14p105/6
2026-09-23no datano datano data79.63%2084.91ms14/14p104/6
2026-09-24no datano datano data0%no data14/14p104/6
2026-09-25$0.00 recorded†11100%2134.78ms14/14p105/6
2026-09-26no datano datano data100%2186.65ms14/14p105/6
2026-09-27no datano datano data100%2198.82ms14/14p104/6
2026-09-28no datano datano data100%2080.37ms14/14p104/6
2026-09-29$0.0924100%2291.79ms14/14p105/6
2026-09-30$0.1333100%2308.48ms14/14p105/6
2026-10-01no datano datano data100%2274.88ms14/14p105/6
2026-10-02$0.1032097.78%1904.91ms14/14p105/6
2026-10-03$0.0611100%2013.11ms14/14p105/6
2026-10-04$23.16114994.44%1962.85ms14/14p105/6
2026-10-05$1.2122291.01%1947.12ms14/14p104/6
2026-10-06no datano datano data88.89%2217.34ms14/14p104/6
2026-10-07$0.101298.89%2054.72ms14/14p104/6
2026-10-08*$0.011395.92%1943.23ms14/14p104/6

Alternatives in Data

SniperX•x402 strong 96/100 99.9% up 30d $333.50 30d
claw402 strong 96/100 100% up 30d $958.61 30d
cn402 strong 94/100 100% up 30d $40.85 30d
glim.sh strong 93/100 100% up 30d $21.20 30d
twit.sh strong 93/100 100% up 30d $33.57 30d

5 of 363 other ranked services in Data, ordered by the same measured score.

see the whole category

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