{
  "x402Version": 2,
  "id": 40895,
  "slug": "40895",
  "resource": "https://source-claim-proof.mattskowronis.workers.dev/v1/verify",
  "description": "Verify whether a supplied public source page currently supports one atomic factual claim. Returns supported, contradicted, or insufficient-evidence plus source snippets, or explicit blocked/unreachable/unsupported states. Not a general fact checker or web search.",
  "type": "http",
  "resourceType": "Utilities",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x22B3D4485C8Dcd8FC4840a7570664747c9055530",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "10000",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "additionalProperties": false,
        "properties": {
          "claim": {
            "description": "The claim that was checked.",
            "type": "string"
          },
          "content_hash": {
            "description": "Hash of retrieved source content.",
            "type": "string"
          },
          "evidence": {
            "description": "Compact source snippets used for the verdict.",
            "items": {
              "additionalProperties": false,
              "properties": {
                "evidence_type": {
                  "description": "Where the snippet came from on the source page.",
                  "enum": [
                    "visible_text",
                    "heading",
                    "json_ld",
                    "meta",
                    "status"
                  ],
                  "type": "string"
                },
                "location": {
                  "description": "Page location of the snippet, or null if unknown.",
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "polarity": {
                  "description": "Whether the snippet supports, contradicts, or is neutral.",
                  "enum": [
                    "supports",
                    "contradicts",
                    "neutral"
                  ],
                  "type": "string"
                },
                "text": {
                  "description": "Source snippet that supports or contradicts the claim.",
                  "maxLength": 240,
                  "type": "string"
                }
              },
              "required": [
                "text",
                "location",
                "evidence_type",
                "polarity"
              ],
              "type": "object"
            },
            "maxItems": 3,
            "type": "array"
          },
          "final_url": {
            "description": "Final URL after redirects.",
            "type": "string"
          },
          "reasoning_summary": {
            "description": "Short machine-readable reason for the verdict.",
            "maxLength": 400,
            "type": "string"
          },
          "retrieval_method": {
            "description": "How the source page was fetched.",
            "enum": [
              "direct_http",
              "browser_run",
              "official_api",
              "unsupported"
            ],
            "type": "string"
          },
          "retrieved_at": {
            "description": "UTC timestamp of the check.",
            "type": "string"
          },
          "service_version": {
            "description": "Source Claim Proof service version.",
            "type": "string"
          },
          "source_status": {
            "description": "verified, blocked, unreachable, unsupported, or insufficient_evidence.",
            "enum": [
              "verified",
              "blocked",
              "unreachable",
              "unsupported",
              "insufficient_evidence"
            ],
            "type": "string"
          },
          "source_url": {
            "description": "Requested source URL.",
            "type": "string"
          },
          "verdict": {
            "description": "supported, contradicted, or insufficient_evidence.",
            "enum": [
              "supported",
              "contradicted",
              "insufficient_evidence"
            ],
            "type": "string"
          }
        },
        "required": [
          "verdict",
          "claim",
          "source_url",
          "final_url",
          "source_status",
          "evidence",
          "reasoning_summary",
          "retrieval_method",
          "retrieved_at",
          "content_hash",
          "service_version"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "claim": "The event begins at 7:00 PM.",
            "url": "https://example.com/event"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "claim": "The event begins at 7:00 PM.",
            "content_hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
            "evidence": [
              {
                "evidence_type": "visible_text",
                "location": "Schedule",
                "polarity": "supports",
                "text": "Doors 6:30 PM. Program begins at 7:00 PM."
              }
            ],
            "final_url": "https://example.com/event",
            "reasoning_summary": "Visible schedule text states the program begins at 7:00 PM.",
            "retrieval_method": "direct_http",
            "retrieved_at": "2026-08-18T22:00:00.000Z",
            "service_version": "1.0.0",
            "source_status": "verified",
            "source_url": "https://example.com/event",
            "verdict": "supported"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "properties": {
                  "claim": {
                    "description": "One atomic factual assertion to check against that source only.",
                    "maxLength": 500,
                    "minLength": 3,
                    "type": "string"
                  },
                  "url": {
                    "description": "Public HTTP or HTTPS source page URL to inspect.",
                    "maxLength": 2048,
                    "type": "string"
                  }
                },
                "required": [
                  "url",
                  "claim"
                ]
              },
              "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": {
                "additionalProperties": false,
                "properties": {
                  "claim": {
                    "description": "The claim that was checked.",
                    "type": "string"
                  },
                  "content_hash": {
                    "description": "Hash of retrieved source content.",
                    "type": "string"
                  },
                  "evidence": {
                    "description": "Compact source snippets used for the verdict.",
                    "items": {
                      "additionalProperties": false,
                      "properties": {
                        "evidence_type": {
                          "description": "Where the snippet came from on the source page.",
                          "enum": [
                            "visible_text",
                            "heading",
                            "json_ld",
                            "meta",
                            "status"
                          ],
                          "type": "string"
                        },
                        "location": {
                          "description": "Page location of the snippet, or null if unknown.",
                          "type": [
                            "string",
                            "null"
                          ]
                        },
                        "polarity": {
                          "description": "Whether the snippet supports, contradicts, or is neutral.",
                          "enum": [
                            "supports",
                            "contradicts",
                            "neutral"
                          ],
                          "type": "string"
                        },
                        "text": {
                          "description": "Source snippet that supports or contradicts the claim.",
                          "maxLength": 240,
                          "type": "string"
                        }
                      },
                      "required": [
                        "text",
                        "location",
                        "evidence_type",
                        "polarity"
                      ],
                      "type": "object"
                    },
                    "maxItems": 3,
                    "type": "array"
                  },
                  "final_url": {
                    "description": "Final URL after redirects.",
                    "type": "string"
                  },
                  "reasoning_summary": {
                    "description": "Short machine-readable reason for the verdict.",
                    "maxLength": 400,
                    "type": "string"
                  },
                  "retrieval_method": {
                    "description": "How the source page was fetched.",
                    "enum": [
                      "direct_http",
                      "browser_run",
                      "official_api",
                      "unsupported"
                    ],
                    "type": "string"
                  },
                  "retrieved_at": {
                    "description": "UTC timestamp of the check.",
                    "type": "string"
                  },
                  "service_version": {
                    "description": "Source Claim Proof service version.",
                    "type": "string"
                  },
                  "source_status": {
                    "description": "verified, blocked, unreachable, unsupported, or insufficient_evidence.",
                    "enum": [
                      "verified",
                      "blocked",
                      "unreachable",
                      "unsupported",
                      "insufficient_evidence"
                    ],
                    "type": "string"
                  },
                  "source_url": {
                    "description": "Requested source URL.",
                    "type": "string"
                  },
                  "verdict": {
                    "description": "supported, contradicted, or insufficient_evidence.",
                    "enum": [
                      "supported",
                      "contradicted",
                      "insufficient_evidence"
                    ],
                    "type": "string"
                  }
                },
                "required": [
                  "verdict",
                  "claim",
                  "source_url",
                  "final_url",
                  "source_status",
                  "evidence",
                  "reasoning_summary",
                  "retrieval_method",
                  "retrieved_at",
                  "content_hash",
                  "service_version"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "source-claim-proof.mattskowronis.workers.dev",
  "lastUpdated": "2026-10-08T06:26:36.24Z",
  "quality": {
    "calls30d": 3,
    "uniquePayers30d": 3,
    "lastCalledAt": "2026-10-08T06:26:35.939Z"
  },
  "metadata": {
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "claim": "The event begins at 7:00 PM.",
              "url": "https://example.com/event"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "claim": "The event begins at 7:00 PM.",
              "content_hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
              "evidence": [
                {
                  "evidence_type": "visible_text",
                  "location": "Schedule",
                  "polarity": "supports",
                  "text": "Doors 6:30 PM. Program begins at 7:00 PM."
                }
              ],
              "final_url": "https://example.com/event",
              "reasoning_summary": "Visible schedule text states the program begins at 7:00 PM.",
              "retrieval_method": "direct_http",
              "retrieved_at": "2026-08-18T22:00:00.000Z",
              "service_version": "1.0.0",
              "source_status": "verified",
              "source_url": "https://example.com/event",
              "verdict": "supported"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "claim": {
                      "description": "One atomic factual assertion to check against that source only.",
                      "maxLength": 500,
                      "minLength": 3,
                      "type": "string"
                    },
                    "url": {
                      "description": "Public HTTP or HTTPS source page URL to inspect.",
                      "maxLength": 2048,
                      "type": "string"
                    }
                  },
                  "required": [
                    "url",
                    "claim"
                  ]
                },
                "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": {
                  "additionalProperties": false,
                  "properties": {
                    "claim": {
                      "description": "The claim that was checked.",
                      "type": "string"
                    },
                    "content_hash": {
                      "description": "Hash of retrieved source content.",
                      "type": "string"
                    },
                    "evidence": {
                      "description": "Compact source snippets used for the verdict.",
                      "items": {
                        "additionalProperties": false,
                        "properties": {
                          "evidence_type": {
                            "description": "Where the snippet came from on the source page.",
                            "enum": [
                              "visible_text",
                              "heading",
                              "json_ld",
                              "meta",
                              "status"
                            ],
                            "type": "string"
                          },
                          "location": {
                            "description": "Page location of the snippet, or null if unknown.",
                            "type": [
                              "string",
                              "null"
                            ]
                          },
                          "polarity": {
                            "description": "Whether the snippet supports, contradicts, or is neutral.",
                            "enum": [
                              "supports",
                              "contradicts",
                              "neutral"
                            ],
                            "type": "string"
                          },
                          "text": {
                            "description": "Source snippet that supports or contradicts the claim.",
                            "maxLength": 240,
                            "type": "string"
                          }
                        },
                        "required": [
                          "text",
                          "location",
                          "evidence_type",
                          "polarity"
                        ],
                        "type": "object"
                      },
                      "maxItems": 3,
                      "type": "array"
                    },
                    "final_url": {
                      "description": "Final URL after redirects.",
                      "type": "string"
                    },
                    "reasoning_summary": {
                      "description": "Short machine-readable reason for the verdict.",
                      "maxLength": 400,
                      "type": "string"
                    },
                    "retrieval_method": {
                      "description": "How the source page was fetched.",
                      "enum": [
                        "direct_http",
                        "browser_run",
                        "official_api",
                        "unsupported"
                      ],
                      "type": "string"
                    },
                    "retrieved_at": {
                      "description": "UTC timestamp of the check.",
                      "type": "string"
                    },
                    "service_version": {
                      "description": "Source Claim Proof service version.",
                      "type": "string"
                    },
                    "source_status": {
                      "description": "verified, blocked, unreachable, unsupported, or insufficient_evidence.",
                      "enum": [
                        "verified",
                        "blocked",
                        "unreachable",
                        "unsupported",
                        "insufficient_evidence"
                      ],
                      "type": "string"
                    },
                    "source_url": {
                      "description": "Requested source URL.",
                      "type": "string"
                    },
                    "verdict": {
                      "description": "supported, contradicted, or insufficient_evidence.",
                      "enum": [
                        "supported",
                        "contradicted",
                        "insufficient_evidence"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "verdict",
                    "claim",
                    "source_url",
                    "final_url",
                    "source_status",
                    "evidence",
                    "reasoning_summary",
                    "retrieval_method",
                    "retrieved_at",
                    "content_hash",
                    "service_version"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "source-claim-proof.mattskowronis.workers.dev",
    "manifest_name": "source-claim-proof.mattskowronis.workers.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": {
      "claim": "string",
      "content_hash": "string",
      "evidence": [
        {
          "evidence_type": "visible_text",
          "location": "string",
          "polarity": "supports",
          "text": "string"
        }
      ],
      "final_url": "string",
      "reasoning_summary": "string",
      "retrieval_method": "direct_http",
      "retrieved_at": "string",
      "service_version": "string",
      "source_status": "verified",
      "source_url": "string",
      "verdict": "supported"
    },
    "type": "string"
  }
}