{"uid":"cap_tkoCgFtyqMdOUF7oilAkp","slug":"x402-receipt-verification-api-edc26c0c","name":"x402 Receipt Tier Verifier","description":"Agent-commerce trust/audit API for x402 challenge correctness, receipts, replay/context binding, failed payout triage, mandate readiness, and MCP/A2A discoverability.","url":"https://x402.167-172-95-184.nip.io/receipt/verify?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"tier":"R3_SEMANTIC_REPLY","score":72,"network":"base","detected":{"handler_ack":true,"transport_ack":true,"domain_receipt":false,"semantic_reply":true},"timestamp":1780000000,"recommendation":"Do not mark done until public/domain artifact or independent verifier receipt is attached.","missing_for_done":["domain_receipt","verifier_receipt"]},"description":"Receipt-tier verifier for agent swarms: classifies transport ACK, handler ACK, semantic reply, domain receipt, and human approval evidence."},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kkBT0WiTRuhhsqWm0zPPJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies and classifies agent receipt evidence into tiers (transport ACK, handler ACK, semantic reply, domain receipt, human approval) with a confidence score and completion recommendation.","exampleAgentPrompt":"Can you verify this receipt payload from my agent swarm and tell me what tier it is, whether the handler ACK and semantic reply are detected, and whether I'm missing anything before marking the task as done?","exampleUseCases":null,"resultDescription":"Returns a JSON object with: receipt tier (e.g. R3_SEMANTIC_REPLY), a numeric confidence score (0-100), the network (e.g. 'base'), a detected signals map showing which of transport_ack/handler_ack/domain_receipt/semantic_reply were found, a Unix timestamp, a human-readable recommendation, and a list of missing artifacts required before the task can be marked complete.","failureModes":["Malformed or empty receipt payload returns a low score with all detected signals false","Missing required acknowledgment layers results in a low tier classification with a 'do not mark done' recommendation","Network field may be absent if receipt does not include chain context","Ambiguous or partial receipt data may be classified conservatively at a lower tier than actual completion","Payment failure (insufficient USDC) results in HTTP 402 before the endpoint is reached"],"whenToPreferThis":"Use this endpoint when you need to programmatically determine whether an agent's task completion evidence meets a sufficient threshold to be marked done — particularly in multi-agent swarms where you need to distinguish between a bare transport acknowledgment and a semantically confirmed, domain-verified receipt. Prefer this over manual inspection when automating agent workflow state transitions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-03T05:27:30.621Z","isFirstParty":false,"canonicalSlug":"x402-receipt-verification-api-edc26c0c"}