{
  "x402Version": 2,
  "id": 40865,
  "slug": "40865",
  "resource": "https://claim-grounding.prospectintel.workers.dev/v1/verify_claim",
  "description": "Verify claim. Checks one factual claim against public sources (Wikipedia) and returns a verdict (supported, contradicted, outdated, mixed or insufficient_evidence) with confidence, a short reason, the quote and source URL, and a receipt. $1.00 USDC.",
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  "resourceType": "Market Data",
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            "claim": {
              "text": "Paris is the capital of France"
            }
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                  "quote": "Paris is the capital and largest city of France.",
                  "retrieved_at": "2026-10-10T12:00:00.000Z",
                  "title": "Paris",
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                "start": 0
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              "text": "Paris is the capital of France",
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              "created_at": "2026-10-10T12:00:00.000Z",
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            "why": "Claim wholly entailed by cited evidence."
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                        "type": "string"
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  "lastUpdated": "2026-10-13T02:13:26.891Z",
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  "metadata": {
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                "text": "Paris is the capital of France"
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              "upsell": null,
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                  "required": [
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          "type": "object"
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  "liveness": {
    "reliability": null
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  "verified": false,
  "featured": false,
  "provider": {
    "host": "claim-grounding.prospectintel.workers.dev",
    "manifest_name": "claim-grounding.prospectintel.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": {
    "claim": {
      "citations": [
        {
          "provider": "context",
          "quote": "Paris is the capital and largest city of France.",
          "retrieved_at": "2026-10-10T12:00:00.000Z",
          "title": "Paris",
          "url": "https://en.wikipedia.org/wiki/Paris"
        }
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      "grounding_required": true,
      "rationale_short": "Claim wholly entailed by cited evidence.",
      "span": {
        "end": 30,
        "start": 0
      },
      "support_score": 0.92,
      "text": "Paris is the capital of France",
      "verdict": "supported"
    },
    "job_id": null,
    "mode": "fast",
    "next_actions": [],
    "receipt": {
      "claim_hashes": [
        "sha256:UGFyaXMgaXMgdGhlIGNhcGl0YWwgb2Yg"
      ],
      "created_at": "2026-10-10T12:00:00.000Z",
      "evidence_urls": [
        "https://en.wikipedia.org/wiki/Paris"
      ],
      "priced_usd": 1,
      "verdicts": [
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    },
    "source": "https://en.wikipedia.org/wiki/Paris",
    "upsell": null,
    "why": "Claim wholly entailed by cited evidence."
  }
}