{"uid":"cap_GD-UFhLXK2I_Hz2pHfFoj","slug":"apiosk-tx-confirmation-attestation-4d09a726","name":"Apiosk TX Confirmation Attestation","description":"Read a transaction receipt on Base, compare it against the head block, and return status (success/failed/pending), the block it landed in and a confirmation count, wrapped in a signed JWS-HS256 receipt. Independently re-checkable from the tx block + head block in the envelope.","url":"https://gateway.apiosk.com/attestations/tx-confirmation","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.011","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Sw9crt2k21_uW2RyL_fBy","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Reads a Base blockchain transaction receipt, compares it to the head block, and returns a signed JWS-HS256 attestation with status, block number, and confirmation count.","exampleAgentPrompt":"Can you check whether Base transaction 0xabc123...def got confirmed — I need a signed receipt showing its status, the block it landed in, and how many confirmations it has so far?","exampleUseCases":[{"title":"Post-payment confirmation for a dApp","prompt":"My user just paid with USDC on Base — can you verify that transaction 0x4f7a2b...c891 actually succeeded and give me a signed receipt with its block number and confirmation count so I can unlock their account?"},{"title":"Dispute resolution proof of payment","prompt":"I need tamper-proof proof that transaction 0x9e3d1a...7f02 on Base was successful — can you get me a signed attestation with the block it landed in and how many confirmations it has?"},{"title":"Automated payout audit trail","prompt":"Before I mark this withdrawal as complete, check that Base tx 0x12bc44...a73f is confirmed and return a signed JWS receipt I can store showing its status and confirmation count."}],"resultDescription":"A JWS-HS256 signed envelope containing: transaction status (success/failed/pending), the block number the transaction landed in, confirmation count (head block minus tx block), and the head block reference — allowing independent re-verification from the on-chain data in the envelope.","failureModes":["Transaction hash not found on Base — returns error indicating tx does not exist","Transaction still pending with 0 confirmations — returns pending status","Invalid or malformed transaction hash input","Network connectivity issues reading Base chain state","Head block temporarily unavailable causing confirmation count error"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically signed, independently verifiable attestation of a Base transaction's status — not just a raw RPC response. Ideal for audit trails, dispute resolution, automated payment pipelines, or any workflow where a tamper-evident receipt is required. Preferable over raw Base RPC calls when you need a structured, signed result that a third party can verify without querying the chain themselves.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:04:16.594Z","isFirstParty":false}