{
  "x402Version": 2,
  "id": 35973,
  "slug": "35973",
  "resource": "https://tanod.dev/v1/chain/calldata",
  "description": "chainpeek (Tanod) calldata decode: decode EVM transaction calldata with a given signature, or look the selector up and return every candidate that decodes cleanly (unverified hints). Read-only.",
  "type": "http",
  "serviceName": "Tanod chainpeek",
  "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791364949/bazaar-icons/d8143c9bc952f5cd.png",
  "resourceType": "Beauty & Personal Care",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "3000",
      "amountUsd": 0.003,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:137",
      "payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "amount": "3000",
      "amountUsd": 0.003,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "properties": {
          "best": {
            "type": [
              "object",
              "null"
            ]
          },
          "bytes": {
            "type": "integer"
          },
          "candidates": {
            "type": "array"
          },
          "decoded": {
            "type": "array"
          },
          "note": {
            "type": [
              "string",
              "null"
            ]
          },
          "selector": {
            "type": "string"
          }
        },
        "required": [
          "selector",
          "decoded"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "calldata": "0xa9059cbb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003e8",
            "signature": "transfer(address,uint256)"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "best": {
              "args": [
                {
                  "type": "address",
                  "value": "0x0000000000000000000000000000000000000001"
                },
                {
                  "type": "uint256",
                  "value": "1000"
                }
              ],
              "name": "transfer",
              "signature": "transfer(address,uint256)"
            },
            "bytes": 68,
            "candidates": [
              "transfer(address,uint256)"
            ],
            "decoded": [
              {
                "args": [
                  {
                    "type": "address",
                    "value": "0x0000000000000000000000000000000000000001"
                  },
                  {
                    "type": "uint256",
                    "value": "1000"
                  }
                ],
                "name": "transfer",
                "signature": "transfer(address,uint256)"
              }
            ],
            "note": "signature database matches are unverified hints; selectors can collide",
            "selector": "0xa9059cbb"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "additionalProperties": false,
                "properties": {
                  "calldata": {
                    "description": "0x-prefixed calldata hex (at least a 4-byte selector).",
                    "type": "string"
                  },
                  "signature": {
                    "anyOf": [
                      {
                        "type": "string"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "default": null,
                    "description": "Optional function signature, e.g. transfer(address,uint256); omit to look the selector up and return every clean decode."
                  }
                },
                "required": [
                  "calldata"
                ],
                "type": "object"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "best": {
                    "type": [
                      "object",
                      "null"
                    ]
                  },
                  "bytes": {
                    "type": "integer"
                  },
                  "candidates": {
                    "type": "array"
                  },
                  "decoded": {
                    "type": "array"
                  },
                  "note": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "selector": {
                    "type": "string"
                  }
                },
                "required": [
                  "selector",
                  "decoded"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    },
    "builder-code": {
      "info": {
        "a": "bc_h7pxv14u"
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "additionalProperties": false,
        "properties": {
          "a": {
            "description": "App builder code",
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          },
          "s": {
            "description": "Service builder codes",
            "items": {
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "maxItems": 11,
            "type": "array"
          },
          "w": {
            "description": "Wallet builder code",
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          }
        },
        "type": "object"
      }
    }
  },
  "tags": [
    "chainpeek",
    "ens",
    "calldata",
    "erc20",
    "ethereum",
    "bazaar",
    "builder-code"
  ],
  "sourceHost": "tanod.dev",
  "lastUpdated": "2026-10-08T20:47:18.983Z",
  "quality": {
    "calls30d": 2,
    "uniquePayers30d": 2,
    "lastCalledAt": "2026-10-08T20:47:18.551Z"
  },
  "metadata": {
    "serviceName": "Tanod chainpeek",
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791364949/bazaar-icons/d8143c9bc952f5cd.png",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "calldata": "0xa9059cbb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003e8",
              "signature": "transfer(address,uint256)"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "best": {
                "args": [
                  {
                    "type": "address",
                    "value": "0x0000000000000000000000000000000000000001"
                  },
                  {
                    "type": "uint256",
                    "value": "1000"
                  }
                ],
                "name": "transfer",
                "signature": "transfer(address,uint256)"
              },
              "bytes": 68,
              "candidates": [
                "transfer(address,uint256)"
              ],
              "decoded": [
                {
                  "args": [
                    {
                      "type": "address",
                      "value": "0x0000000000000000000000000000000000000001"
                    },
                    {
                      "type": "uint256",
                      "value": "1000"
                    }
                  ],
                  "name": "transfer",
                  "signature": "transfer(address,uint256)"
                }
              ],
              "note": "signature database matches are unverified hints; selectors can collide",
              "selector": "0xa9059cbb"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "calldata": {
                      "description": "0x-prefixed calldata hex (at least a 4-byte selector).",
                      "type": "string"
                    },
                    "signature": {
                      "anyOf": [
                        {
                          "type": "string"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "default": null,
                      "description": "Optional function signature, e.g. transfer(address,uint256); omit to look the selector up and return every clean decode."
                    }
                  },
                  "required": [
                    "calldata"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "best": {
                      "type": [
                        "object",
                        "null"
                      ]
                    },
                    "bytes": {
                      "type": "integer"
                    },
                    "candidates": {
                      "type": "array"
                    },
                    "decoded": {
                      "type": "array"
                    },
                    "note": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "selector": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "selector",
                    "decoded"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "builder-code": {
        "info": {
          "a": "bc_h7pxv14u"
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "maxItems": 11,
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "tanod.dev",
    "manifest_name": "tanod.dev",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "example": {
      "best": {},
      "bytes": 0,
      "candidates": [
        "value"
      ],
      "decoded": [
        "value"
      ],
      "note": "string",
      "selector": "string"
    },
    "type": "string"
  }
}