{"id":"2a48a96f-465e-4f6d-89f5-b2d1d224fdf5","shortId":"HtreXW","kind":"x402","title":"Pay-per-call transaction receipt endpoint on Base via x402, $0.02/request in USDC.","tagline":"Pay-per-call transaction receipt endpoint on Base via x402, $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides a transaction receipt retrieval service accessible via the x402 payment protocol. It is part of a broader platform offering multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities—all priced at $0.02 per request settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/transactions/373/receipt` returns a JSON receipt for transaction ID 373. Payment is handled inline: callers send an X-PAYMENT header containing a signed USDC payment of up to 20,000 base units ($0.02, since USDC uses 6 decimals) to the specified payTo address on Base. No API keys, rate limits, or subscriptions are required—access is purely pay-per-use.\n\nThe platform advertises instant access with no minimums or commitments. Documentation pages exist but appear gated behind a wallet connection, so detailed request/response schemas are not publicly documented. The x402 challenge confirms the endpoint is live, accepts POST requests, and returns application/json content.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","transaction-receipt","pay-per-call","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 payment endpoint","USDC micropayment API","Base network API","pay-per-request API","lowpaymentfee","crypto payment gateway"],"warnings":["Documentation pages are gated behind wallet connection—no public schema or examples available","The specific endpoint path includes a hardcoded transaction ID (373), suggesting it may be a single-resource endpoint rather than a general-purpose API","No response schema or example output is documented anywhere in the crawl"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/373/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/373/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge with clear pricing and network details. However, no OpenAPI schema, no request/response examples, and documentation pages are gated behind wallet connection, leaving the actual response format 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'/request':13,28 '0.02':12,27,72,117 '000':114 '20':113 '373':93 '6':121 'Base network API' 'USDC micropayment API' 'accept':182 'access':41,139,150 'address':127 'advertis':148 'ai':61 'analyt':60 'api':56,131 'appear':160 'application/json':187 'base':9,24,80,115,129 'base-network' 'behind':162 'broader':52 'call':4,19 'caller':98 'categori':57 'challeng':176 'commit':155 'confirm':177 'connect':165 'contain':105 'content':188 'crypto payment gateway' 'data':59 'decim':122 'detail':167 'document':156,173 'endpoint':7,22,32,84,179 'exist':158 'financ':64 'gate':161 'handl':96 'header':104 'id':92 'includ':58 'infrastructur':67 'inlin':97 'instant':149 'json':88 'json-response' 'key':132 'learn':63 'limit':134 'live':181 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'minimum':153 'multipl':55 'network':81 'no-api-key' 'offer':54 'page':157 'part':49 'pay':2,17,143 'pay-per-cal':1,16 'pay-per-call' 'pay-per-request API' 'pay-per-us':142 'payment':45,94,103,109 'payto':126 'per':3,18,73,144 'platform':53,147 'post':183 'price':70 'protocol':46 'provid':35 'public':172 'pure':141 'rate':133 'receipt':6,21,38,89 'request':74,184 'request/response':168 'requir':138 'retriev':39 'return':86,186 'schema':169 'send':99 'servic':40 'settl':75 'sign':107 'sinc':118 'specif':83 'specifi':125 'subscript':136 'transact':5,20,37,91 'transaction receipt API' 'transaction-receipt' 'unit':116 'usdc':15,30,77,108,119 'usdc-settlement' 'use':120,145 'util':68 'via':10,25,42 'wallet':164 'web3':65 'x':102 'x-payment':101 'x402':11,26,44,175 'x402 payment endpoint' 'x402-payment'","prices":[{"id":"88809a9e-cb8b-4ca9-8433-e9d51ecd713d","listingId":"2a48a96f-465e-4f6d-89f5-b2d1d224fdf5","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/373/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":"2026-04-18T19:26:36.847Z"}],"sources":[{"listingId":"2a48a96f-465e-4f6d-89f5-b2d1d224fdf5","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/373/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:26:36.847Z","lastSeenAt":"2026-04-24T05:03:16.366Z"}],"details":{"listingId":"2a48a96f-465e-4f6d-89f5-b2d1d224fdf5","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/373/receipt \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\" \\\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 accepting USDC on Base network at maxAmountRequired 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/transactions/373/receipt"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/transactions/373/receipt"}],"useCases":["Retrieving transaction receipts programmatically with per-call payment","Integrating pay-per-use APIs without subscription overhead","Agent-driven workflows that need verifiable transaction data on demand"],"bestFor":["Developers wanting zero-commitment API access paid in USDC","AI agents that need to fetch transaction receipts autonomously","Projects already operating on the Base L2 network"],"notFor":["High-volume batch processing where per-call pricing is inefficient","Users without USDC on Base network","Applications requiring detailed API documentation before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:37.442Z"},"updatedAt":"2026-04-24T05:03:16.366Z"}}