{"uid":"cap_Un5qHeFTcu04y3K7uS54t","slug":"fastpath-bitcoin-transaction-lookup-ethereum-style-rpc-e02521b3","name":"FastPath Bitcoin Transaction Lookup (Ethereum-style RPC)","description":"FastPath translates Ethereum-style JSON-RPC requests into Bitcoin data, fee intelligence, mempool insight, and Core v31 package signals. Paid by x402.","url":"https://api.nativebtc.org/v1/tx/%7Btxid%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"fee":220,"txid":"81c97a6c5b98a1019095de132727cda868694fb5d92534ebb07e475619e38325","vsize":110,"success":true,"feeRateSatVb":2}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_4_hAGs_qMSkQb6U8GgRdn","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches Bitcoin transaction details — fee, vsize, and fee rate — via a REST endpoint styled for Ethereum JSON-RPC consumers.","exampleAgentPrompt":"Can you pull up the fee details for Bitcoin transaction 81c97a6c5b98a1019095de132727cda868694fb5d92534ebb07e475619e38325 — I want to see the fee in satoshis, the vsize, and the fee rate in sat/vb?","exampleUseCases":null,"resultDescription":"Returns a JSON object with the transaction's fee in satoshis, txid, virtual size in vbytes, fee rate in sat/vb, and a boolean success flag.","failureModes":["Invalid or malformed txid returns an error or success:false","Transaction not found in the node's index returns a not-found error","Network timeout or upstream Bitcoin node unavailability causes request failure","Payment not processed (x402 payment required) results in 402 response"],"whenToPreferThis":"Choose this endpoint when you need fast, structured Bitcoin transaction fee and size data via a familiar REST/JSON interface, especially if your tooling is already oriented around Ethereum-style JSON-RPC conventions. Ideal for fee analysis, vsize inspection, and quick transaction lookups without running your own Bitcoin node.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:30:02.917Z","isFirstParty":false}