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x402 Signed Receipt Delivery Confidence Scorer
x402
x402 Signed Receipt Delivery Confidence Scorer is a paid API for AI agents from api.blockchainmoneymap.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).
Scores the confidence that a signed x402 payment receipt correctly proves delivery of a paid resource, by checking offer, receipt, and delivery proof facts against optional reference facts.
Price / call$0.01
Success—
StatusUnknown
How this service works
Choose Blockchain Money Map for human-readable public blockchain reports, x402-paid agent API services, agent workflow packs, custom agent builds, or an Agent Radar pilot preview.
Output
A JSON response containing a delivery confidence score and assessment indicating how reliably the provided offer, receipt, and delivery proof facts demonstrate that a paid x402 resource was successfully delivered, potentially with comparison against reference facts.
Example use cases
Verify agent API call was paid and delivered
“I just made an x402 micropayment of 0.01 USDC for the 'market-data-feed' resource on Base — offer was present, receipt was signed, and I have a delivery proof with hash sha256:deadbeef00112233deadbeef00112233deadbeef00112233deadbeef00112233. Can you score how confident we should be that delivery actually happened?”
Detect receipt tampering against reference
“Compare these two sets of receipt facts and score whether the current receipt for 'kyc-report' (0.05 USDC, Ethereum, offer present, receipt present, delivery proof present) matches my reference facts — let me know the confidence that delivery is legitimate and nothing has changed.”
Audit historical x402 payment receipt
“I need to audit an old x402 transaction: resource label is 'blockchain-wallet-report', amount 0.01 USDC, signed at 2024-11-01T08:30:00Z, valid until 2024-11-01T08:35:00Z, offer was present, receipt was present, but there was no delivery proof. Score the delivery confidence so I can flag it if it's suspicious.”
Technical details
Endpoint
POSThttps://api.blockchainmoneymap.com/api/x402/x402-signed-receipt-delivery-confidence-scorer?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a programmatic, scored assessment of whether an x402 micropayment receipt genuinely proves resource delivery — particularly when running automated agent pipelines that pay for API responses and need to verify they received what they paid for. Prefer this over manual inspection when you have structured receipt facts and optionally reference facts to compare against, and need a confidence score rather than a simple boolean check.
Side effects
- Missing required facts fields (offer_present, receipt_present, delivery_proof_present, resource_label, amount, currency) cause validation errors
- Invalid response_hash format (not matching sha256:[64 hex chars]) causes schema rejection
- mode field missing or not set to 'check' causes request rejection
- Mismatched facts vs reference_facts may yield low confidence score rather than an error
- Payment failure (x402) returns 402 status requiring USDC payment before scoring
- Network or currency strings exceeding 500 characters cause input rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| mode | — | |
| facts | object | |
| policy | object | |
| reference_facts | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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