{"uid":"cap_FxXcFgZRCBH2p7F7ZM6n7","slug":"plainchain-x402-receipt-verifier-52ddbaff","name":"Plainchain x402 Receipt Verifier","description":"Gas, balances, token data, address type, approvals, transaction decoding, x402 receipt verification and verifiable randomness on Base, Arbitrum, Ethereum and Optimism. No API key: pay $0.001-$0.01 per call in USDC on Base via x402.","url":"https://plainchain.appin60.com/v1/x402/receipt?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["hash"],"properties":{"hash":{"type":"string","pattern":"^0x[0-9a-fA-F]{64}$","description":"settlement transaction hash"},"chain":{"type":"string","description":"base (default), arbitrum, ethereum or optimism; chain ids 8453, 42161, 1, 10 also work"},"payTo":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"optional expected recipient"},"amount":{"type":"string","description":"optional minimum expected amount in token units, e.g. 0.01"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"checks":{"payToMatches":true,"amountMatches":true},"scheme":"EIP-3009 transferWithAuthorization (x402 exact)","payment":{"payTo":"0x36c3...","payer":"0x4c29...","amount":"0.01","symbol":"USDC"},"verified":true,"confirmations":3820001}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002942","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002942/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002942","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002942","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_FYT4_ee99vSAXOUcmAXc0","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002942","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies an x402 USDC payment receipt on-chain by checking a settlement transaction hash, confirming the payer, recipient, and amount match expectations.","exampleAgentPrompt":"Can you verify that the x402 payment with transaction hash 0xabc123...def456 on Base actually settled to my wallet 0x36c3... for at least 0.01 USDC?","exampleUseCases":[{"title":"Gating content behind x402 payment","prompt":"Before I release the premium report to this user, verify their x402 settlement transaction 0xd4f8...3a21 on Base paid at least 0.005 USDC to my address 0x36c3..."},{"title":"Auditing a past x402 receipt","prompt":"I need to check whether the USDC payment with hash 0x7b2e...c90f on Arbitrum actually went through and how many confirmations it has — can you pull the receipt details?"},{"title":"Automating pay-per-call service delivery","prompt":"My agent just received an x402 payment claim — verify transaction hash 0x1fa2...88bc on Base settled the right amount to the right payTo address before we proceed."}],"resultDescription":"Returns a JSON object with a `verified` boolean, the `scheme` (EIP-3009 transferWithAuthorization), full `payment` details (payer, payTo, amount, symbol), number of `confirmations`, and `checks` flags indicating whether the payTo address and amount match the expected values.","failureModes":["Transaction hash not found or not yet indexed — returns unverified or error","Hash does not match a USDC x402 settlement transaction","payTo address mismatch — checks.payToMatches returns false","Amount below minimum threshold — checks.amountMatches returns false","Unsupported chain specified — returns error","Malformed transaction hash (not 0x + 64 hex chars) — schema validation error"],"whenToPreferThis":"Use this endpoint when you need cryptographic on-chain confirmation that an x402 USDC micropayment settled correctly before delivering a service or resource. It is purpose-built for the x402 pay-per-call protocol and supports EIP-3009 transferWithAuthorization semantics across Base, Arbitrum, Ethereum, and Optimism — making it the right choice over generic block explorers when you need structured, agent-friendly verification with optional recipient and amount assertions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T06:42:29.119Z","isFirstParty":false,"canonicalSlug":"plainchain-x402-receipt-verifier-52ddbaff"}