{
  "x402Version": 2,
  "id": 8674,
  "slug": "8674",
  "resource": "https://workbot1.oddsys.org/verify-sig",
  "description": "Verify EVM signatures offline: EIP-191 personal messages, EIP-712 typed data, and x402/EIP-3009 payment authorizations (paste a raw Payment-Signature header) — recovers the signing wallet, checks it against an expected address, and reports the authorization's amount, payee and validity window. No chain reads.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x15459498e1191d8787c83177809bd54022fA18c4",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "2000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "address": "0x7E5F4552091A69125d5DfCb7b8C2659029395Bdf",
            "message": "Busker x402 verify-sig example",
            "signature": "0x8f83ce1348bb56eb6d7ede8f6c6787adc3897839e686a0b305fb87e7cd248d5555c7405f0e776b995be1971d6ed71a95541d19635e354f807d94c9326c22a1cb1c"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "body": {
            "amount": "object — { usdc } for known USDC contracts",
            "authorization": "object (authorization modes) — from, to, value, validAfter, validBefore, nonce",
            "checks": "object (x402-header) — payToMatches, amountMatches, network, scheme",
            "matches": "boolean (when address given) / matchesFrom (authorization modes)",
            "messageHash": "string (eip191) / digest (typed modes)",
            "mode": "string (eip191|eip712|eip3009|x402-header)",
            "signer": "string|null — recovered EOA",
            "valid": "boolean — signature recovered to an address",
            "window": "object — { validAfter, validBefore, validNow }"
          },
          "bodyType": "json",
          "example": {
            "address": "0x7E5F4552091A69125d5DfCb7b8C2659029395Bdf",
            "matches": true,
            "messageHash": "0x0c9b1f4d5f2b6e7a4d3c2b1a0f9e8d7c6b5a4f3e2d1c0b9a8f7e6d5c4b3a2f1e",
            "mode": "eip191",
            "signer": "0x7E5F4552091A69125d5DfCb7b8C2659029395Bdf",
            "valid": true
          }
        }
      },
      "routeTemplate": "/verify-sig",
      "schema": {
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "additionalProperties": false,
                "description": "Exactly one of: message (EIP-191), typedData (EIP-712), authorization (EIP-3009 / x402 exact-EVM), paymentHeader (raw base64 Payment-Signature or X-Payment header). signature is required except with paymentHeader.",
                "properties": {
                  "address": {
                    "description": "Expected signer; when given the response carries a matches boolean.",
                    "type": "string"
                  },
                  "authorization": {
                    "description": "EIP-3009 TransferWithAuthorization fields { from, to, value, validAfter, validBefore, nonce } (the x402 payload.authorization object).",
                    "type": "object"
                  },
                  "domain": {
                    "description": "Explicit EIP-712 domain { name, version, chainId, verifyingContract } for a non-USDC token.",
                    "type": "object"
                  },
                  "message": {
                    "description": "Plain message that was signed with personal_sign (EIP-191).",
                    "type": "string"
                  },
                  "network": {
                    "description": "CAIP-2 network for authorization mode (default eip155:8453 = USDC on Base).",
                    "type": "string"
                  },
                  "paymentHeader": {
                    "description": "Raw base64 value of an x402 Payment-Signature / X-Payment header; decoded and verified in one step.",
                    "type": "string"
                  },
                  "signature": {
                    "description": "0x-prefixed 65-byte signature.",
                    "type": "string"
                  },
                  "typedData": {
                    "description": "EIP-712 payload { domain, types, primaryType, message } exactly as signed.",
                    "type": "object"
                  }
                },
                "type": "object"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          }
        }
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "workbot1.oddsys.org",
  "lastUpdated": "2026-09-17T09:03:27.333Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-17T09:03:25.703Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "workbot1.oddsys.org",
    "manifest_name": "workbot1.oddsys.org",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}