{"uid":"cap_4dMxTQXomVwdl_AdHLE3R","slug":"chainverdict-payment-verification-api-e356c584","name":"ChainVerdict Payment Verification API","description":"x402 v2 pay-per-call. Unpaid requests receive HTTP 402 with payment requirements.","url":"https://chainverdict.xyz/v1/verify/payment/%7Btx%7D?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"},"pathParams":{"type":"object","required":["tx"],"properties":{"tx":{"type":"string","description":"Base transaction hash"}}},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_GZ0TlN-pIjIwJjVdPgI0r","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies whether a blockchain transaction constitutes a valid payment for a given transaction hash","exampleAgentPrompt":"Can you verify whether transaction hash 0xabc123...def456 is a valid payment using ChainVerdict?","exampleUseCases":[{"title":"Confirm crypto payment before fulfillment","prompt":"Before I release the digital download to this customer, can you check if transaction hash 0x4f2a8b1c9d3e7f0a2b4c6d8e0f1a3b5c7d9e is a confirmed and valid payment?"},{"title":"Audit on-chain payment records","prompt":"I need to audit our last batch of payments — can you verify that transaction 0x9e8d7c6b5a4f3e2d1c0b9a8f7e6d5c4b is a legitimate on-chain payment so I can reconcile our books?"},{"title":"Fraud check on suspicious transaction","prompt":"A user claims they paid with transaction hash 0x1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d — can you run it through ChainVerdict to confirm it's actually a real payment and not fraudulent?"}],"resultDescription":"Returns a verdict object indicating whether the specified blockchain transaction hash represents a valid, confirmed payment, along with supporting transaction details such as status, amount, and chain information.","failureModes":["Invalid or malformed transaction hash returns an error response","Transaction hash not found on any supported chain returns a not-found or unverified verdict","Unpaid API requests receive HTTP 402 with payment requirements before any result is returned","Network timeouts if the underlying blockchain RPC is slow or unavailable","Transaction exists but is pending/unconfirmed may return an inconclusive or pending verdict"],"whenToPreferThis":"Use ChainVerdict when you need a quick, pay-per-call on-chain payment verification by transaction hash without setting up your own blockchain node or indexer. It is well-suited for agents that need to gate access or confirm crypto payments in real time before fulfilling orders, releasing assets, or logging payment receipts.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T12:33:43.729Z","isFirstParty":false,"canonicalSlug":"chainverdict-payment-verification-api-e356c584"}