{"id":"812022d7-d066-46e3-a110-1ac77cbbcd8a","shortId":"9DSv2h","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 ID 287) behind an x402 paywall. The provider operates a broader platform offering multiple API categories — data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/transactions/287/receipt` accepts POST requests and returns JSON. Payment is handled via the x402 protocol: callers receive a 402 challenge containing payment details (payTo address, asset contract, amount), construct an on-chain USDC payment on Base, and include the payment proof in the `X-PAYMENT` header to access the resource. The max amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. No API keys, rate limits, or upfront commitments are required.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what the receipt payload contains. The endpoint is confirmed live (402 challenge captured), but the actual utility and response format remain unclear.","tags":[],"capabilities":["x402-payment","usdc-base","transaction-receipt","micropayment","no-api-key","pay-per-request"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 micropayment","USDC payment API","Base network API","pay-per-call API","lowpaymentfee"],"warnings":["No API documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or output schema provided; response format is unknown","The specific resource '/api/v1/transactions/287/receipt' appears to be a single hardcoded transaction ID — unclear if this generalizes to other IDs","No request body schema documented for the POST method"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/287/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/287/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and no explanation of what the receipt contains. The docs pages are empty. This is effectively a stub 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'0.02':11,24,67,147 '000':138 '20':137 '287':39 '402':98,206 '6':143 'Base network API' 'USDC payment API' 'accept':82 'access':32,129 'actual':211 'address':104 'ai':56 'amount':107,134 'analyt':55 'api':52,149,167 'asset':105 'base':8,21,76,116,139 'behind':40 'broader':48 'caller':95 'captur':208 'categori':53 'chain':112 'challeng':99,207 'commit':155 'confirm':204 'connect':176 'construct':108 'contain':100,200 'content':182 'contract':106 'data':54 'decim':144 'descript':194 'detail':102,193 'doc':166 'document':158 'endpoint':28,80,202 'equal':146 'exampl':190 'extrem':163 'financ':59 'format':215 'handl':90 'header':127 'id':38 'includ':118 'infrastructur':62 'json':87 'key':150 'learn':58 'limit':152 'live':205 'lowpaymentfee' 'lowpaymentfee.com':30 'machin':57 'max':133 'micropay':6,19 'micropayment' 'multipl':51 'network':9,22,77 'no-api-key' 'offer':50 'on-chain':110 'openapi':186 'oper':46 'page':171 'pay-per-call API' 'pay-per-request' 'payload':199 'payment':88,101,114,120,126 'payto':103 'paywal':43 'per':12,25,68 'platform':49 'post':83 'price':65,168 'prompt':178 'proof':121 'protocol':94 'provid':31,45 'rate':151 'readm':170 'receipt':2,15,36,198 'receiv':96 'remain':216 'render':173 'request':13,26,69,84 'request/response':189 'requir':135,157 'resourc':37,131 'respons':214 'retriev':3,16 'return':86 'schema':187 'settl':71 'site':161 'spars':164 'specif':79 'substant':181 'transact':1,14,35 'transaction receipt API' 'transaction-receipt' 'unclear':217 'unit':140 'upfront':154 'usdc':73,113,142 'usdc-base' 'util':63,212 'via':4,17,91 'wallet':177 'web3':60 'x':125 'x-payment':124 'x402':5,18,42,93 'x402 micropayment' 'x402-payment'","prices":[{"id":"cea9216a-c8f1-48c5-9a70-423d1c32ac3d","listingId":"812022d7-d066-46e3-a110-1ac77cbbcd8a","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/287/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":"2026-04-18T18:59:55.271Z"}],"sources":[{"listingId":"812022d7-d066-46e3-a110-1ac77cbbcd8a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/287/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:59:55.271Z","lastSeenAt":"2026-04-24T13:03:15.753Z"}],"details":{"listingId":"812022d7-d066-46e3-a110-1ac77cbbcd8a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/287/receipt\n# Returns 402 with x402 challenge. Include X-PAYMENT header with USDC payment proof on Base to access.","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/transactions/287/receipt"},{"claim":"All APIs on the platform are 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":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/transactions/287/receipt"}],"useCases":["Retrieving a transaction receipt for a specific transaction ID","Programmatic access to financial transaction data via micropayment","Agent-driven on-chain payment for API access without API keys"],"bestFor":["Developers experimenting with x402 payment protocol","Agents needing keyless, pay-per-call API access on Base","Low-volume, on-demand transaction receipt lookups"],"notFor":["High-volume batch retrieval of many transaction receipts (no bulk endpoint documented)","Users who need detailed API documentation or response schema guarantees before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:39.894Z"},"updatedAt":"2026-04-24T13:03:15.753Z"}}