Verify whether a cited source supports an exact factual claim

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xFbC4f75278c9F3C901EFaDa9fEB3DE76089Fcb99",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "claim": "The United States declared war on Japan on December 8, 1941.",
          "sourceUrl": "https://www.archives.gov/milestone-documents/joint-address-to-congress-declaration-of-war-against-japan"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "ok": true,
          "result": {
            "agent": {
              "id": "citation-verification",
              "version": "2.0.0"
            },
            "claim": "The United States declared war on Japan on December 8, 1941.",
            "verification": {
              "confidence": 0.98,
              "verdict": "supported"
            }
          }
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "additionalProperties": false,
              "properties": {
                "claim": {
                  "description": "The exact factual claim to test against the cited source.",
                  "maxLength": 4000,
                  "minLength": 1,
                  "type": "string"
                },
                "sourceUrl": {
                  "description": "Public URL of the source that allegedly supports the claim.",
                  "maxLength": 2048,
                  "minLength": 1,
                  "type": "string"
                }
              },
              "required": [
                "claim",
                "sourceUrl"
              ],
              "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": {
                "ok": {
                  "type": "boolean"
                },
                "result": {
                  "type": "object"
                }
              },
              "required": [
                "ok",
                "result"
              ],
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://red-breeze-8b8c.keenanbooker83.workers.dev/verify-citation"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://red-breeze-8b8c.keenanbooker83.workers.dev/verify-citation");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://red-breeze-8b8c.keenanbooker83.workers.dev/verify-citation")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header