{"id":"f31cd9bb-9365-49ff-8197-49cf0b4703c9","shortId":"RWP49g","kind":"x402","title":"Transaction receipt retrieval via x402 micropayment on Base network for $0.02 per request.","tagline":"Transaction receipt retrieval via x402 micropayment on Base network for $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides access to a transaction receipt (resource path `/api/v1/transactions/322/receipt`) gated behind an x402 payment challenge. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a maximum amount of 20,000 base units, which equals $0.02 USD (USDC uses 6 decimals). No API keys or rate limits are required — access is granted per-request upon payment.\n\nThe provider, lowpaymentfee.com, hosts a broader suite of x402-gated APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto market data, and infrastructure utilities. All endpoints are listed at $0.02 per request with the same pay-per-use model on the Base network. However, this specific listing is for the transaction receipt endpoint only.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live via a valid 402 challenge response, but the actual data returned after payment is unknown from the available material.","tags":[],"capabilities":["x402-payment","usdc-base-network","transaction-receipt","pay-per-request","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["transaction receipt API","x402 micropayment endpoint","Base network USDC API","pay-per-call API","lowpaymentfee","crypto payment gated API"],"warnings":["No OpenAPI or schema documentation available — request and response formats are unknown","All documentation pages (docs, API, pricing, README) return only a 'Connect wallet' prompt with no technical content","The endpoint is for a specific transaction ID (322); it is unclear whether this is a demo or a production resource","No information on what fields the receipt contains or what input the POST body expects"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/322/receipt","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/transactions/322/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The specific purpose of this receipt endpoint is unclear beyond its URL path. This is effectively a stub 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'0.02':11,24,76,131 '000':71 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':64 '20':70 '402':202 '6':80 'Base network USDC API' 'accept':48 'access':32,90 'actual':207 'ai/ml':113 'amount':68 'analysi':116 'analyt':112 'api':83,109,163 'avail':193,216 'base':8,21,59,72,144 'behind':41 'broader':103 'challeng':45,203 'classif':118 'confirm':197 'connect':172 'contract':63 'crypto payment gated API' 'data':111,122,208 'decim':81 'detail':179 'doc':162 'document':157,188 'embed':119 'endpoint':28,47,127,155,195 'equal':75 'exampl':191 'extrem':159 'finance/crypto':120 'gate':40,108 'grant':92 'host':101 'howev':146 'infer':114 'infrastructur':124 'json':53 'json-response' 'key':84 'limit':87 'list':129,149 'live':198 'lowpaymentfee' 'lowpaymentfee.com':30,100 'market':121 'materi':217 'maximum':67 'micropay':6,19 'model':141 'network':9,22,60,145 'no-api-key' 'openapi':183 'page':167 'path':38 'pay':138 'pay-per-call API' 'pay-per-request' 'pay-per-us':137 'payload':192 'payment':44,54,97,211 'per':12,25,94,132,139 'per-request':93 'post':49 'price':164 'prompt':174 'provid':31,99 'rate':86 'readm':166 'receipt':2,15,36,154 'render':169 'request':13,26,50,95,133 'request/response':186 'requir':89 'resourc':37 'respons':204 'retriev':3,16 'return':52,209 'schema':187 'sentiment':115 'settl':56 'span':110 'spars':160 'spec':184 'specif':148 'suit':104 'summar':117 'technic':178 'transact':1,14,35,153 'transaction receipt API' 'transaction-receipt' 'unit':73 'unknown':213 'upon':96 'usd':77 'usdc':62,78 'usdc-base-network' 'use':61,79,140 'util':125 'valid':201 'via':4,17,199 'wallet':173 'x402':5,18,43,107 'x402 micropayment endpoint' 'x402-gated':106 'x402-payment'","prices":[{"id":"cefc52fe-ed59-49ee-84f9-6f0e2a022143","listingId":"f31cd9bb-9365-49ff-8197-49cf0b4703c9","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/transactions/322/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:26:11.340Z"}],"sources":[{"listingId":"f31cd9bb-9365-49ff-8197-49cf0b4703c9","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/322/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:26:11.340Z","lastSeenAt":"2026-04-24T20:03:19.150Z"}],"details":{"listingId":"f31cd9bb-9365-49ff-8197-49cf0b4703c9","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/322/receipt \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/transactions/322/receipt"},{"claim":"maxAmountRequired is 20000 base units of USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/transactions/322/receipt"},{"claim":"All APIs priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Provider offers APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving a transaction receipt for transaction ID 322 via micropayment","Programmatic access to receipt data without API key management","Agent-driven workflows that need on-demand transaction documentation"],"bestFor":["Developers wanting keyless, pay-per-use API access on Base","AI agents with x402-compatible payment capabilities","Quick one-off transaction receipt lookups"],"notFor":["Bulk retrieval of many transaction receipts (no batch endpoint documented)","Users who need detailed API documentation or response schema guarantees before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:38.568Z"},"updatedAt":"2026-04-24T20:03:19.150Z"}}