UnyKorn Operator Network

payment-readyonlineimported

payment-ready until 2026-10-15

imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed

Utility endpoints from the Genesis402 / UnyKorn operator network: Bitcoin and EVM block lookups, mempool data, script types, EIP-712 hashing, HMAC, JSON canonicalization and CSV/JSON conversion.

twin.unykorn.org ↗

Call it x402 v2

x402 v2

Base URL: https://twin.unykorn.org
Payment: x402 v2, header channel

$ curl -i -X POST 'https://twin.unykorn.org/btc-block'

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

Endpoints 10 paid routes on twin.unykorn.org

POST/btc-blockBase+Pol+Sol$0.004since 10-08

POST/btc-mempoolBase+Pol+Sol$0.003since 10-08

POST/btc-script-typeBase+Pol+Sol$0.003since 10-08

POST/csv-to-jsonBase+Pol+Sol$0.003since 10-08

POST/eip712-hashBase+Pol+Sol$0.003since 10-08

POST/evm-block-by-hashBase+Pol+Sol$0.003since 10-08

POST/evm-tx-by-indexBase+Pol+Sol$0.003since 10-08

POST/hash-hmacBase+Pol+Sol$0.003since 10-08

2 more in Example 402 response

Prices as captured in the 402 response: median $0.003 across the 10 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
Method	Path	Description	Price	Network	Asset	402 channel	Captured
POST	/btc-block	No description	$0.004	Base+Pol+Sol	USDC	header	since 10-08
POST	/btc-mempool	No description	$0.003	Base+Pol+Sol	USDC	header	since 10-08
POST	/btc-script-type	No description	$0.003	Base+Pol+Sol	USDC	header	since 10-08
POST	/csv-to-json	No description	$0.003	Base+Pol+Sol	USDC	header	since 10-08
POST	/eip712-hash	No description	$0.003	Base+Pol+Sol	USDC	header	since 10-08
POST	/evm-block-by-hash	No description	$0.003	Base+Pol+Sol	USDC	header	since 10-08
POST	/evm-tx-by-index	No description	$0.003	Base+Pol+Sol	USDC	header	since 10-08
POST	/hash-hmac	No description	$0.003	Base+Pol+Sol	USDC	header	since 10-08
POST	/json-canonical	No description	$0.003	Base+Pol+Sol	USDC	header	since 10-08
POST	/json-to-csv	No description	$0.003	Base+Pol+Sol	USDC	header	since 10-08

Payment evidence

402 payload captured at 2026-10-08 00:01:02 UTC. Check evidence JSON · Measurement methodology.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "4000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "4000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxAmountRequired": "4000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
      "amount": "4000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxAmountRequired": "4000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://twin.unykorn.org/btc-block",
    "tags": [
      "Bitcoin",
      "BTC",
      "UTXO",
      "non-EVM",
      "onchain data",
      "block",
      "difficulty",
      "mining",
      "header",
      "Bitcoin read",
      "x402",
      "JSON",
      "agent-payable",
      "infra",
      "ai",
      "agents",
      "genesis402",
      "unykorn"
    ],
    "mimeType": "application/json",
    "parameters": {
      "hash": "required: 64-hex Bitcoin txid"
    },
    "description": "One Bitcoin block by hash — Genesis402 / UnyKorn Operator Network",
    "serviceName": "One Bitcoin block by hash",
    "what_you_get": "A block header with its height, timestamp and age, transaction count, size and weight, difficulty, merkle root, nonce, bits, and the total fees it collected. Read live at request time; every figure names the exact endpoint it came from, and an upstream that does not answer is reported as unavailable — never as a zero.",
    "deterministic": false,
    "typical_execution_ms": "200-2000"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "params": {
              "hash": "4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "type": "btc-block",
            "receipt": {
              "tx_hash": "0x<64hex>",
              "amount_usd": 0.004,
              "receipt_id": "g402-<16hex>"
            },
            "generated_at": "<iso8601>"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "params"
                ],
                "properties": {
                  "params": {
                    "type": "object",
                    "required": [
                      "hash"
                    ],
                    "properties": {
                      "hash": {
                        "type": "string",
                        "pattern": "^[0-9a-fA-F]{64}$",
                        "description": "64-hex Bitcoin txid"
                      }
                    }
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2,
  "alternatives": {
    "mpp": {
      "spec": "https://paymentauth.org/",
      "header": "WWW-Authenticate",
      "intent": "charge",
      "method": "usdc",
      "scheme": "Payment",
      "credential_header": "Authorization: Payment <base64url credential>"
    }
  },
  "lanes_withheld": {
    "reason": "pay_first_lanes_are_flat_priced",
    "networks": [
      "xrpl:mainnet",
      "stellar:pubnet"
    ],
    "explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled to this task's price, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
    "flat_price_usd": 0.25,
    "this_task_price_usd": 0.004
  }
}

Other captured 402 responses (9)

Captured payload 2 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
      "amount": "3000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://twin.unykorn.org/evm-block-by-hash",
    "tags": [
      "EVM",
      "RPC",
      "onchain data",
      "multi-chain",
      "block",
      "block hash",
      "reorg check",
      "EVM chain read",
      "x402",
      "JSON",
      "agent-payable",
      "infra",
      "ai",
      "agents",
      "genesis402",
      "unykorn"
    ],
    "mimeType": "application/json",
    "parameters": {
      "hash": "required: 0x-prefixed 64-hex hash",
      "chain": "optional: EVM chain: ethereum | base | polygon | arbitrum | optimism | bsc | avalanche | gnosis | linea | scroll (default base)"
    },
    "description": "Block header by block hash — Genesis402 / UnyKorn Operator Network",
    "serviceName": "Block header by block hash",
    "what_you_get": "The same worked-out block header, looked up by block hash instead of height — which is how you confirm a block hash you were given is really on this chain and at what height. Read live at request time; every figure names the exact endpoint it came from, and an upstream that does not answer is reported as unavailable — never as a zero.",
    "deterministic": false,
    "typical_execution_ms": "300-2500"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "params": {
              "hash": "0x16e944e8cc2f2b0ab6d0b47a7c82dc9dc4910a13b159b5af7c464b09604a20c7",
              "chain": "base"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "type": "evm-block-by-hash",
            "receipt": {
              "tx_hash": "0x<64hex>",
              "amount_usd": 0.003,
              "receipt_id": "g402-<16hex>"
            },
            "generated_at": "<iso8601>"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "params"
                ],
                "properties": {
                  "params": {
                    "type": "object",
                    "required": [
                      "hash"
                    ],
                    "properties": {
                      "hash": {
                        "type": "string",
                        "pattern": "^0x[0-9a-fA-F]{64}$",
                        "description": "0x-prefixed 64-hex hash"
                      },
                      "chain": {
                        "enum": [
                          "ethereum",
                          "base",
                          "polygon",
                          "arbitrum",
                          "optimism",
                          "bsc",
                          "avalanche",
                          "gnosis",
                          "linea",
                          "scroll"
                        ],
                        "type": "string",
                        "description": "EVM chain: ethereum | base | polygon | arbitrum | optimism | bsc | avalanche | gnosis | linea | scroll (default base)"
                      }
                    }
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2,
  "alternatives": {
    "mpp": {
      "spec": "https://paymentauth.org/",
      "header": "WWW-Authenticate",
      "intent": "charge",
      "method": "usdc",
      "scheme": "Payment",
      "credential_header": "Authorization: Payment <base64url credential>"
    }
  },
  "lanes_withheld": {
    "reason": "pay_first_lanes_are_flat_priced",
    "networks": [
      "xrpl:mainnet",
      "stellar:pubnet"
    ],
    "explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled to this task's price, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
    "flat_price_usd": 0.25,
    "this_task_price_usd": 0.003
  }
}

Captured payload 3 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
      "amount": "3000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://twin.unykorn.org/eip712-hash",
    "tags": [
      "Ethereum",
      "ABI",
      "EVM",
      "deterministic",
      "developer tooling",
      "EIP-712",
      "typed data",
      "signing",
      "permit",
      "digest",
      "Deterministic compute",
      "x402",
      "JSON",
      "agent-payable",
      "infra",
      "ai",
      "agents",
      "genesis402",
      "unykorn"
    ],
    "mimeType": "application/json",
    "parameters": {
      "types": "required: any JSON value",
      "domain": "required: any JSON value",
      "message": "required: any JSON value",
      "primaryType": "required: string"
    },
    "description": "EIP-712 typed-data digest — Genesis402 / UnyKorn Operator Network",
    "serviceName": "EIP-712 typed-data digest",
    "what_you_get": "The digest a wallet signs for typed data: the full EIP-712 hash over your domain, type definitions and message. Compute it before you sign to confirm the wallet is showing you the same thing, or after to verify what somebody else signed. Your type definitions are taken as given; a wrong type set produces a valid-looking digest for the wrong data, which is exactly the trap EIP-712 exists to close. Check the domain fields carefully — chainId and verifyingContract are what stop a signature being replayed elsewhere. Deterministic: identical input always yields identical output.",
    "deterministic": true,
    "typical_execution_ms": "1-8"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "params": {
              "types": {
                "Mail": [
                  {
                    "name": "contents",
                    "type": "string"
                  }
                ]
              },
              "domain": {
                "name": "Example",
                "chainId": 8453,
                "version": "1"
              },
              "message": {
                "contents": "hello"
              },
              "primaryType": "Mail"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "type": "eip712-hash",
            "receipt": {
              "tx_hash": "0x<64hex>",
              "amount_usd": 0.003,
              "receipt_id": "g402-<16hex>"
            },
            "generated_at": "<iso8601>"
          }
        }
      },
      "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": [
                  "params"
                ],
                "properties": {
                  "params": {
                    "type": "object",
                    "required": [
                      "domain",
                      "types",
                      "primaryType",
                      "message"
                    ],
                    "properties": {
                      "types": {
                        "type": [
                          "object",
                          "array",
                          "string",
                          "number",
                          "boolean",
                          "null"
                        ],
                        "description": "any JSON value"
                      },
                      "domain": {
                        "type": [
                          "object",
                          "array",
                          "string",
                          "number",
                          "boolean",
                          "null"
                        ],
                        "description": "any JSON value"
                      },
                      "message": {
                        "type": [
                          "object",
                          "array",
                          "string",
                          "number",
                          "boolean",
                          "null"
                        ],
                        "description": "any JSON value"
                      },
                      "primaryType": {
                        "type": "string",
                        "description": "string"
                      }
                    }
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2,
  "alternatives": {
    "mpp": {
      "spec": "https://paymentauth.org/",
      "header": "WWW-Authenticate",
      "intent": "charge",
      "method": "usdc",
      "scheme": "Payment",
      "credential_header": "Authorization: Payment <base64url credential>"
    }
  },
  "lanes_withheld": {
    "reason": "pay_first_lanes_are_flat_priced",
    "networks": [
      "xrpl:mainnet",
      "stellar:pubnet"
    ],
    "explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled to this task's price, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
    "flat_price_usd": 0.25,
    "this_task_price_usd": 0.003
  }
}

Captured payload 4 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
      "amount": "3000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://twin.unykorn.org/evm-tx-by-index",
    "tags": [
      "EVM",
      "RPC",
      "onchain data",
      "multi-chain",
      "transaction",
      "block index",
      "sampling",
      "EVM chain read",
      "x402",
      "JSON",
      "agent-payable",
      "infra",
      "ai",
      "agents",
      "genesis402",
      "unykorn"
    ],
    "mimeType": "application/json",
    "parameters": {
      "block": "optional: block number, or latest | earliest | pending | safe | finalized (default latest)",
      "chain": "optional: EVM chain: ethereum | base | polygon | arbitrum | optimism | bsc | avalanche | gnosis | linea | scroll (default base)",
      "index": "optional: non-negative integer"
    },
    "description": "The Nth transaction in a block — Genesis402 / UnyKorn Operator Network",
    "serviceName": "The Nth transaction in a block",
    "what_you_get": "One transaction taken by position within a block: from, to, value, nonce, gas, and the first four bytes of calldata (the method selector) so you can tell a transfer from a contract call without decoding. Read live at request time; every figure names the exact endpoint it came from, and an upstream that does not answer is reported as unavailable — never as a zero.",
    "deterministic": false,
    "typical_execution_ms": "300-2500"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "params": {
              "chain": "base"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "type": "evm-tx-by-index",
            "receipt": {
              "tx_hash": "0x<64hex>",
              "amount_usd": 0.003,
              "receipt_id": "g402-<16hex>"
            },
            "generated_at": "<iso8601>"
          }
        }
      },
      "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": [
                  "params"
                ],
                "properties": {
                  "params": {
                    "type": "object",
                    "properties": {
                      "block": {
                        "type": "string",
                        "description": "block number, or latest | earliest | pending | safe | finalized (default latest)"
                      },
                      "chain": {
                        "enum": [
                          "ethereum",
                          "base",
                          "polygon",
                          "arbitrum",
                          "optimism",
                          "bsc",
                          "avalanche",
                          "gnosis",
                          "linea",
                          "scroll"
                        ],
                        "type": "string",
                        "description": "EVM chain: ethereum | base | polygon | arbitrum | optimism | bsc | avalanche | gnosis | linea | scroll (default base)"
                      },
                      "index": {
                        "type": "integer",
                        "minimum": 0,
                        "description": "non-negative integer"
                      }
                    }
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2,
  "alternatives": {
    "mpp": {
      "spec": "https://paymentauth.org/",
      "header": "WWW-Authenticate",
      "intent": "charge",
      "method": "usdc",
      "scheme": "Payment",
      "credential_header": "Authorization: Payment <base64url credential>"
    }
  },
  "lanes_withheld": {
    "reason": "pay_first_lanes_are_flat_priced",
    "networks": [
      "xrpl:mainnet",
      "stellar:pubnet"
    ],
    "explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled to this task's price, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
    "flat_price_usd": 0.25,
    "this_task_price_usd": 0.003
  }
}

Captured payload 5 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
      "amount": "3000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://twin.unykorn.org/json-to-csv",
    "tags": [
      "JSON",
      "deterministic",
      "utility",
      "data",
      "CSV",
      "export",
      "tabular",
      "flatten",
      "Deterministic compute",
      "x402",
      "JSON",
      "agent-payable",
      "infra",
      "ai",
      "agents",
      "genesis402",
      "unykorn"
    ],
    "mimeType": "application/json",
    "parameters": {
      "rows": "required: any JSON value",
      "columns": "optional: any JSON value"
    },
    "description": "Render JSON rows as CSV — Genesis402 / UnyKorn Operator Network",
    "serviceName": "Render JSON rows as CSV",
    "what_you_get": "An array of objects rendered as CSV, with quoting applied wherever a value contains a delimiter, quote or newline. Columns are taken from the union of every row's keys unless you name them, so a row missing a field produces an empty cell rather than a shifted line. Deterministic: identical input always yields identical output.",
    "deterministic": true,
    "typical_execution_ms": "1-8"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "params": {
              "rows": [
                {
                  "a": 1,
                  "b": 2
                }
              ],
              "columns": null
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "type": "json-to-csv",
            "receipt": {
              "tx_hash": "0x<64hex>",
              "amount_usd": 0.003,
              "receipt_id": "g402-<16hex>"
            },
            "generated_at": "<iso8601>"
          }
        }
      },
      "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": [
                  "params"
                ],
                "properties": {
                  "params": {
                    "type": "object",
                    "required": [
                      "rows"
                    ],
                    "properties": {
                      "rows": {
                        "type": [
                          "object",
                          "array",
                          "string",
                          "number",
                          "boolean",
                          "null"
                        ],
                        "description": "any JSON value"
                      },
                      "columns": {
                        "type": [
                          "object",
                          "array",
                          "string",
                          "number",
                          "boolean",
                          "null"
                        ],
                        "description": "any JSON value"
                      }
                    }
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2,
  "alternatives": {
    "mpp": {
      "spec": "https://paymentauth.org/",
      "header": "WWW-Authenticate",
      "intent": "charge",
      "method": "usdc",
      "scheme": "Payment",
      "credential_header": "Authorization: Payment <base64url credential>"
    }
  },
  "lanes_withheld": {
    "reason": "pay_first_lanes_are_flat_priced",
    "networks": [
      "xrpl:mainnet",
      "stellar:pubnet"
    ],
    "explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled to this task's price, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
    "flat_price_usd": 0.25,
    "this_task_price_usd": 0.003
  }
}

Captured payload 6 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
      "amount": "3000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://twin.unykorn.org/csv-to-json",
    "tags": [
      "JSON",
      "deterministic",
      "utility",
      "data",
      "CSV",
      "parsing",
      "tabular",
      "ETL",
      "Deterministic compute",
      "x402",
      "JSON",
      "agent-payable",
      "infra",
      "ai",
      "agents",
      "genesis402",
      "unykorn"
    ],
    "mimeType": "application/json",
    "parameters": {
      "csv": "required: UTF-8 text, up to 48 KiB",
      "delimiter": "optional: string"
    },
    "description": "Parse CSV into JSON rows — Genesis402 / UnyKorn Operator Network",
    "serviceName": "Parse CSV into JSON rows",
    "what_you_get": "CSV (up to 48 KiB) parsed into objects keyed by the header row, handling quoted fields, embedded delimiters and escaped quotes. Reports the column names, the row count, and any rows whose field count does not match the header instead of silently dropping them. The first line is taken as the header. Values are returned as strings — no type inference, because guessing that \"0123\" is a number is how zip codes and account ids get corrupted. Deterministic: identical input always yields identical output.",
    "deterministic": true,
    "typical_execution_ms": "1-8"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "params": {
              "csv": "a,b\n1,2"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "type": "csv-to-json",
            "receipt": {
              "tx_hash": "0x<64hex>",
              "amount_usd": 0.003,
              "receipt_id": "g402-<16hex>"
            },
            "generated_at": "<iso8601>"
          }
        }
      },
      "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": [
                  "params"
                ],
                "properties": {
                  "params": {
                    "type": "object",
                    "required": [
                      "csv"
                    ],
                    "properties": {
                      "csv": {
                        "type": "string",
                        "maxLength": 49152,
                        "description": "UTF-8 text, up to 48 KiB"
                      },
                      "delimiter": {
                        "type": "string",
                        "description": "string"
                      }
                    }
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2,
  "alternatives": {
    "mpp": {
      "spec": "https://paymentauth.org/",
      "header": "WWW-Authenticate",
      "intent": "charge",
      "method": "usdc",
      "scheme": "Payment",
      "credential_header": "Authorization: Payment <base64url credential>"
    }
  },
  "lanes_withheld": {
    "reason": "pay_first_lanes_are_flat_priced",
    "networks": [
      "xrpl:mainnet",
      "stellar:pubnet"
    ],
    "explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled to this task's price, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
    "flat_price_usd": 0.25,
    "this_task_price_usd": 0.003
  }
}

Captured payload 7 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
      "amount": "3000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://twin.unykorn.org/btc-script-type",
    "tags": [
      "Bitcoin",
      "BTC",
      "UTXO",
      "non-EVM",
      "onchain data",
      "script",
      "scriptPubKey",
      "output type",
      "deterministic",
      "Deterministic compute",
      "x402",
      "JSON",
      "agent-payable",
      "infra",
      "ai",
      "agents",
      "genesis402",
      "unykorn"
    ],
    "mimeType": "application/json",
    "parameters": {
      "hex": "required: 0x-prefixed hex data"
    },
    "description": "Identify a Bitcoin output script — Genesis402 / UnyKorn Operator Network",
    "serviceName": "Identify a Bitcoin output script",
    "what_you_get": "Classifies a scriptPubKey — P2PKH, P2SH, P2WPKH, P2WSH, P2TR, multisig, OP_RETURN or non-standard — and pulls out the key or script hash it commits to. For reading raw transaction outputs without a full node. Pattern matching on the script, which is what node implementations do too. A non-standard script is reported as non-standard rather than forced into a category. Deterministic: identical input always yields identical output.",
    "deterministic": true,
    "typical_execution_ms": "1-8"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "params": {
              "hex": "0x76a91489abcdefabbaabbaabbaabbaabbaabbaabbaabba88ac"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "type": "btc-script-type",
            "receipt": {
              "tx_hash": "0x<64hex>",
              "amount_usd": 0.003,
              "receipt_id": "g402-<16hex>"
            },
            "generated_at": "<iso8601>"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "params"
                ],
                "properties": {
                  "params": {
                    "type": "object",
                    "required": [
                      "hex"
                    ],
                    "properties": {
                      "hex": {
                        "type": "string",
                        "pattern": "^0x[0-9a-fA-F]*$",
                        "description": "0x-prefixed hex data"
                      }
                    }
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2,
  "alternatives": {
    "mpp": {
      "spec": "https://paymentauth.org/",
      "header": "WWW-Authenticate",
      "intent": "charge",
      "method": "usdc",
      "scheme": "Payment",
      "credential_header": "Authorization: Payment <base64url credential>"
    }
  },
  "lanes_withheld": {
    "reason": "pay_first_lanes_are_flat_priced",
    "networks": [
      "xrpl:mainnet",
      "stellar:pubnet"
    ],
    "explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled to this task's price, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
    "flat_price_usd": 0.25,
    "this_task_price_usd": 0.003
  }
}

Captured payload 8 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
      "amount": "3000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://twin.unykorn.org/json-canonical",
    "tags": [
      "JSON",
      "deterministic",
      "utility",
      "data",
      "canonicalisation",
      "signing",
      "reproducibility",
      "hashing",
      "Deterministic compute",
      "x402",
      "JSON",
      "agent-payable",
      "infra",
      "ai",
      "agents",
      "genesis402",
      "unykorn"
    ],
    "mimeType": "application/json",
    "parameters": {
      "json": "required: any JSON value"
    },
    "description": "Canonical JSON and its digest — Genesis402 / UnyKorn Operator Network",
    "serviceName": "Canonical JSON and its digest",
    "what_you_get": "Your JSON in the canonical form this rail uses — keys sorted at every level, undefined dropped, no whitespace — with its sha256 and keccak256. Two parties who canonicalise before hashing get the same digest for the same data regardless of how their libraries happened to order keys, which is what makes a signature over JSON verifiable at all. Deterministic: identical input always yields identical output.",
    "deterministic": true,
    "typical_execution_ms": "1-8"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "params": {
              "json": {
                "a": 1,
                "b": 2
              }
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "type": "json-canonical",
            "receipt": {
              "tx_hash": "0x<64hex>",
              "amount_usd": 0.003,
              "receipt_id": "g402-<16hex>"
            },
            "generated_at": "<iso8601>"
          }
        }
      },
      "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": [
                  "params"
                ],
                "properties": {
                  "params": {
                    "type": "object",
                    "required": [
                      "json"
                    ],
                    "properties": {
                      "json": {
                        "type": [
                          "object",
                          "array",
                          "string",
                          "number",
                          "boolean",
                          "null"
                        ],
                        "description": "any JSON value"
                      }
                    }
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2,
  "alternatives": {
    "mpp": {
      "spec": "https://paymentauth.org/",
      "header": "WWW-Authenticate",
      "intent": "charge",
      "method": "usdc",
      "scheme": "Payment",
      "credential_header": "Authorization: Payment <base64url credential>"
    }
  },
  "lanes_withheld": {
    "reason": "pay_first_lanes_are_flat_priced",
    "networks": [
      "xrpl:mainnet",
      "stellar:pubnet"
    ],
    "explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled to this task's price, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
    "flat_price_usd": 0.25,
    "this_task_price_usd": 0.003
  }
}

Captured payload 9 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
      "amount": "3000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://twin.unykorn.org/hash-hmac",
    "tags": [
      "hashing",
      "digest",
      "deterministic",
      "integrity",
      "HMAC",
      "webhook verification",
      "API signature",
      "authentication",
      "Deterministic compute",
      "x402",
      "JSON",
      "agent-payable",
      "infra",
      "ai",
      "agents",
      "genesis402",
      "unykorn"
    ],
    "mimeType": "application/json",
    "parameters": {
      "hex": "optional: 0x-prefixed hex data",
      "key": "required: string",
      "text": "optional: UTF-8 text, up to 48 KiB",
      "algorithm": "optional: string"
    },
    "description": "HMAC of a message under a key — Genesis402 / UnyKorn Operator Network",
    "serviceName": "HMAC of a message under a key",
    "what_you_get": "An HMAC over your message with your key — the construction webhook signatures and API request signing use. Defaults to SHA-256; name any digest your runtime supports. Returned as hex and base64. The key you send is used for this one computation and is not stored or logged. Even so, do not send a production signing key to any third party, including us — use this to verify signatures, not to mint them. Deterministic: identical input always yields identical output.",
    "deterministic": true,
    "typical_execution_ms": "1-8"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "params": {
              "key": "secret",
              "text": "payload"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "type": "hash-hmac",
            "receipt": {
              "tx_hash": "0x<64hex>",
              "amount_usd": 0.003,
              "receipt_id": "g402-<16hex>"
            },
            "generated_at": "<iso8601>"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "params"
                ],
                "properties": {
                  "params": {
                    "type": "object",
                    "required": [
                      "key"
                    ],
                    "properties": {
                      "hex": {
                        "type": "string",
                        "pattern": "^0x[0-9a-fA-F]*$",
                        "description": "0x-prefixed hex data"
                      },
                      "key": {
                        "type": "string",
                        "description": "string"
                      },
                      "text": {
                        "type": "string",
                        "maxLength": 49152,
                        "description": "UTF-8 text, up to 48 KiB"
                      },
                      "algorithm": {
                        "type": "string",
                        "description": "string"
                      }
                    }
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2,
  "alternatives": {
    "mpp": {
      "spec": "https://paymentauth.org/",
      "header": "WWW-Authenticate",
      "intent": "charge",
      "method": "usdc",
      "scheme": "Payment",
      "credential_header": "Authorization: Payment <base64url credential>"
    }
  },
  "lanes_withheld": {
    "reason": "pay_first_lanes_are_flat_priced",
    "networks": [
      "xrpl:mainnet",
      "stellar:pubnet"
    ],
    "explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled to this task's price, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
    "flat_price_usd": 0.25,
    "this_task_price_usd": 0.003
  }
}

Captured payload 10 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
      },
      "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
      "amount": "3000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxAmountRequired": "3000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://twin.unykorn.org/btc-mempool",
    "tags": [
      "Bitcoin",
      "BTC",
      "UTXO",
      "non-EVM",
      "onchain data",
      "mempool",
      "congestion",
      "backlog",
      "fees",
      "Bitcoin read",
      "x402",
      "JSON",
      "agent-payable",
      "infra",
      "ai",
      "agents",
      "genesis402",
      "unykorn"
    ],
    "mimeType": "application/json",
    "parameters": {},
    "description": "Bitcoin mempool size and backlog — Genesis402 / UnyKorn Operator Network",
    "serviceName": "Bitcoin mempool size and backlog",
    "what_you_get": "How many transactions are waiting, the total virtual size of the backlog, and the total fees on offer in it — the congestion picture behind whatever fee rate you are being quoted. Read live at request time; every figure names the exact endpoint it came from, and an upstream that does not answer is reported as unavailable — never as a zero.",
    "deterministic": false,
    "typical_execution_ms": "200-2000"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "params": {}
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "type": "btc-mempool",
            "receipt": {
              "tx_hash": "0x<64hex>",
              "amount_usd": 0.003,
              "receipt_id": "g402-<16hex>"
            },
            "generated_at": "<iso8601>"
          }
        }
      },
      "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": [
                  "params"
                ],
                "properties": {
                  "params": {
                    "type": "object",
                    "properties": {}
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object"
          }
        }
      }
    }
  },
  "x402Version": 2,
  "alternatives": {
    "mpp": {
      "spec": "https://paymentauth.org/",
      "header": "WWW-Authenticate",
      "intent": "charge",
      "method": "usdc",
      "scheme": "Payment",
      "credential_header": "Authorization: Payment <base64url credential>"
    }
  },
  "lanes_withheld": {
    "reason": "pay_first_lanes_are_flat_priced",
    "networks": [
      "xrpl:mainnet",
      "stellar:pubnet"
    ],
    "explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled to this task's price, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
    "flat_price_usd": 0.25,
    "this_task_price_usd": 0.003
  }
}

Can I trust it score from our own monitoring

score from our own monitoring

87/100 Solid

                           │         │      ··│···
0                          55        75       93

                │     │    │··
0               55    75   93

#14 of 71 in Blockchain. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability: 100% uptime since 10-08
Compliance: A 14/14 checks pass
Price: $0.003 to $0.004 p36 in Blockchain
Risk: clean no risk flag
Traction: $0.00 30d 0 buyers

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 2026-10-08. 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 online, 100% uptime, latest daily rollup (no 30d window yet), 237ms response p95, x402 compliance 14 of 14, $0.003 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 Blockchain, 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 71 listings, this one among them: the same 71 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.

Traction is a conservative undercount.

All measured facts

What it does

Utility endpoints from the Genesis402 / UnyKorn operator network: Bitcoin and EVM block lookups, mempool data, script types, EIP-712 hashing, HMAC, JSON canonicalization and CSV/JSON conversion.

UnyKorn Operator Network is a listed x402 Blockchain API. Captured payment terms name Base, Polygon, Solana. 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 2026-10-08 00:03:13 UTC. Latest service check observed at 2026-10-08 02:25:05 UTC. Service data JSON · Measurement methodology.

Page rendered at 2026-10-08 02:33:48 UTC. This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: 2026-10-08 02:25:05 UTC. Latest price capture: 2026-10-08 00:00:42 UTC. 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 2026-10-08 00:03:13 UTC. 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. 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 · Blockchain

uptime · latest daily rollup: -
uptime 7d: -
uptime 30d: -
uptime 90d: -
response p95: 237ms
avg response: 237ms
total checks: 1

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

price (min): $0.003
price (max): $0.004
category percentile (min): p36 in Blockchain
category percentile (max): p15 in Blockchain
endpoints / prices: 10 / 2
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: 409d
registrar: Cloudflare, Inc.
hosting: custom
domain created: 2025-08-24

Identity facts, not a risk score.

assessment volume 30d: $0.00
exact assessment volume 30d (USD): 0
assessment recorded at (UTC): 2026-10-08T00:03:13.824Z
buyers 30d: 0
settlements 30d: 0
measured since: --- (start of our harvest window)
last settlement: ---
top buyer share: -
trend 7d vs 30d: -
networks: eip155:137, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time: $0
settlements all-time: 0
median settlement 30d: -
max settlement 30d: -

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: 2026-10-08

Recent checks

Latest 10 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)	Status	HTTP	Response	Endpoints
2026-10-08 02:25:05 UTC	Online	402	233ms	10
2026-10-08 02:09:04 UTC	Online	402	220ms	10
2026-10-08 01:53:04 UTC	Online	402	201ms	10
2026-10-08 01:37:03 UTC	Online	402	206ms	10
2026-10-08 01:21:03 UTC	Online	402	237ms	10
2026-10-08 01:05:04 UTC	Online	402	230ms	10
2026-10-08 00:49:03 UTC	Online	402	233ms	10
2026-10-08 00:33:04 UTC	Online	402	322ms	10
2026-10-08 00:17:04 UTC	Online	402	140ms	10
2026-10-08 00:01:02 UTC	Online	402	237ms	10

Changes0 in 30d

No changes recorded in the last 30 days.

all changes

Over time

On-chain volume daily snapshots, USD 30d: $0.00, peak $1.09 on 10-06

                                                                                        $1.09    
                   ▅▅                                                 ▁▁ ▇▇             ██       
                   ██                   ▄▄       ▄▄    ▁▁             ██ ██             ██       
                   ██       ▂▂       ▂▂ ██ ▂▂    ██    ██             ██ ██             ██       
                   ██       ██       ██ ██ ██    ██    ██             ██ ██             ██       
       ·  ·  ·  ·  ██ ·  ·  ██ ·  ·  ██ ██ ██    ██ ▁▁ ██ ·  ▁▁ ·  ·  ██ ██ ▁▁ ▁▁ ▁▁ ▁▁ ██ ▁▁ ·  
    $0

volume no data in the payload

Distinct buyers per dayDistinct buyers per day

        ·  ·  ·  ·  1  ·  ·  1  ·  ·  1  1  1  1  2  2  3  ·  1  ·  ·  2  2  4  1  1  5  8  2  ·

Uptime no completed-day data

       ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ██

       09-09                                     09-23                                   10-08*

Volume 30d: $0.00
Uptime: no completed-day data

Daily on-chain settlement volume in US dollars, 2026-09-09 to 2026-10-08; highest day $1.09 on 10-06; 8 days have no data in the payload; distinct buyers per day

Day    Volume             USD  Buyers
09-13                   $1.00       1
09-14  · no data, 2 days to 09-15
09-16                   $0.50       1
09-17  · no data, 2 days to 09-18
09-19                   $0.50       1
09-20                   $0.77       1
09-21                   $0.50       1
09-22                  $0.00†       1
09-23                   $0.75       2
09-24                   $0.01       2
09-25                   $0.67       3
09-26  · no data
09-27                   $0.01       1
09-28  · no data, 2 days to 09-29
09-30                   $0.90       2
10-01                   $1.06       2
10-02                   $0.02       4
10-03                   $0.01       1
10-04                   $0.02       1
10-05                   $0.03       5
10-06                   $1.09       8
10-07                   $0.02       2
10-08* · no data

More charts

Response time daily average, ms min 226ms, avg 226ms, max 226ms

                                                                                              ██

09-09 to 10-08* UTC

█

      09-09         09-23     10-08*

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/unykorn-operator-network/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: $7.86, peak $1.09 on 10-06. 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 2026-10-08 00:03:13 UTC. Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-09-13 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
Day	Volume	Buyers	Settlements	Uptime	Response	Compliance	Price percentile	Site signals
2026-09-13	$1.00	1	4	no data	no data	no data	no data	no data
2026-09-14	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-15	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-16	$0.50	1	2	no data	no data	no data	no data	no data
2026-09-17	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-18	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-19	$0.50	1	2	no data	no data	no data	no data	no data
2026-09-20	$0.77	1	179	no data	no data	no data	no data	no data
2026-09-21	$0.50	1	2	no data	no data	no data	no data	no data
2026-09-22	$0.00 recorded†	1	1	no data	no data	no data	no data	no data
2026-09-23	$0.75	2	5	no data	no data	no data	no data	no data
2026-09-24	$0.01	2	3	no data	no data	no data	no data	no data
2026-09-25	$0.67	3	188	no data	no data	no data	no data	no data
2026-09-26	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-27	$0.01	1	1	no data	no data	no data	no data	no data
2026-09-28	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-29	no data	no data	no data	no data	no data	no data	no data	no data
2026-09-30	$0.90	2	15	no data	no data	no data	no data	no data
2026-10-01	$1.06	2	354	no data	no data	no data	no data	no data
2026-10-02	$0.02	4	10	no data	no data	no data	no data	no data
2026-10-03	$0.01	1	1	no data	no data	no data	no data	no data
2026-10-04	$0.02	1	4	no data	no data	no data	no data	no data
2026-10-05	$0.03	5	15	no data	no data	no data	no data	no data
2026-10-06	$1.09	8	228	no data	no data	no data	no data	no data
2026-10-07	$0.02	2	4	no data	no data	no data	no data	no data
2026-10-08*	no data	no data	no data	100%	225.75ms	14/14	p36	2/6

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true402 solid 89/100 99.9% up 30d $0.37 30d

SolEnrich solid 89/100 --- up 30d $0 30d

5 of 70 other ranked services in Blockchain, ordered by the same measured score.

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