{
  "x402Version": 2,
  "id": 27090,
  "slug": "27090",
  "resource": "https://webtools402.176-109-107-191.sslip.io/crypto/verify",
  "description": "Verify an EIP-191 personal_sign or EIP-712 typed-data signature and recover the signer address from public inputs (message + signature). Verification/recovery only — never signs.",
  "type": "http",
  "serviceName": "crypto-verify",
  "resourceType": "Blockchain Data",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xF22e558a00D91Ee12A1F50C52186FecB8dDFf493",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "3000",
      "amountUsd": 0.003,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "expected_signer": "0x19E7E376E7C213B7E7e7e46cc70A5dD086DAff2A",
            "message": "Hello, Ethereum!",
            "scheme": "eip191",
            "signature": "0xb44193cab85bbebd5fd04528a1b54c684418e8c025602174fede446dec814eac0f05db58a6b7b953c1806cecba389686cdebefdfa701c29014b0c486fc5550301c"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "matches": true,
            "scheme": "eip191",
            "signer": "0x52908400098527886E0F7030069857D2E4169EE7"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "properties": {
                  "expected_signer": {
                    "description": "Optional address to compare the recovered signer against",
                    "type": "string"
                  },
                  "message": {
                    "description": "Plain text / 0x-hex (eip191) OR a full typed-data object with types/domain/primaryType/message (eip712)"
                  },
                  "scheme": {
                    "description": "eip191 personal_sign or eip712 typed-data",
                    "enum": [
                      "eip191",
                      "eip712"
                    ],
                    "type": "string"
                  },
                  "signature": {
                    "description": "0x 65-byte signature",
                    "type": "string"
                  }
                },
                "required": [
                  "scheme",
                  "message",
                  "signature"
                ]
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "crypto",
    "signature",
    "eip712",
    "eip191",
    "verify",
    "bazaar"
  ],
  "sourceHost": "webtools402.176-109-107-191.sslip.io",
  "lastUpdated": "2026-10-08T12:30:23.215Z",
  "quality": {
    "calls30d": 5,
    "uniquePayers30d": 3,
    "lastCalledAt": "2026-10-08T12:30:22.474Z"
  },
  "metadata": {
    "serviceName": "crypto-verify",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "expected_signer": "0x19E7E376E7C213B7E7e7e46cc70A5dD086DAff2A",
              "message": "Hello, Ethereum!",
              "scheme": "eip191",
              "signature": "0xb44193cab85bbebd5fd04528a1b54c684418e8c025602174fede446dec814eac0f05db58a6b7b953c1806cecba389686cdebefdfa701c29014b0c486fc5550301c"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "matches": true,
              "scheme": "eip191",
              "signer": "0x52908400098527886E0F7030069857D2E4169EE7"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "expected_signer": {
                      "description": "Optional address to compare the recovered signer against",
                      "type": "string"
                    },
                    "message": {
                      "description": "Plain text / 0x-hex (eip191) OR a full typed-data object with types/domain/primaryType/message (eip712)"
                    },
                    "scheme": {
                      "description": "eip191 personal_sign or eip712 typed-data",
                      "enum": [
                        "eip191",
                        "eip712"
                      ],
                      "type": "string"
                    },
                    "signature": {
                      "description": "0x 65-byte signature",
                      "type": "string"
                    }
                  },
                  "required": [
                    "scheme",
                    "message",
                    "signature"
                  ]
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "webtools402.176-109-107-191.sslip.io",
    "manifest_name": "webtools402.176-109-107-191.sslip.io",
    "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": {},
    "type": "string"
  }
}