{"id":"046a599a-46a8-48d4-88d8-282e2827c053","shortId":"vYGwvv","kind":"x402","title":"Transaction receipt retrieval via x402 micropayment on Base network, $0.02 per request in USDC.","tagline":"Transaction receipt retrieval via x402 micropayment on Base network, $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides access to a transaction receipt (resource `/api/v1/transactions/244/receipt`) behind an x402 paywall. The provider operates a broad suite of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request, settled in USDC on the Base network. No API keys, rate limits, or upfront commitments are required; callers simply attach an x402 payment header to each request.\n\nThe specific endpoint probed here returns a receipt for transaction ID 244. The x402 challenge confirms the endpoint is live, accepting POST requests with an exact-scheme payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment timeout is 300 seconds. The response MIME type is `application/json`.\n\nDocumentation beyond the landing page is sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the receipt's JSON schema. The provider's landing page lists many other endpoints across analytics, AI, finance, and utility categories, all at the same $0.02 price point, but none include detailed documentation either.","tags":[],"capabilities":["x402-payment","usdc-base","transaction-receipt","pay-per-call","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["transaction receipt API","x402 micropayment","USDC payment API","Base network API","pay-per-request","lowpaymentfee","receipt endpoint"],"warnings":["No OpenAPI or schema documentation available — response format is unknown","All documentation pages (/docs, /pricing, /api, /README) return only a 'Connect wallet' prompt with no technical content","The endpoint is for a specific transaction ID (244); it is unclear whether other transaction IDs are accessible or what the receipt contains","Provider lists many endpoints on the landing page but none have detailed docs"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/244/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/244/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 via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no example payloads, and all secondary pages render only a wallet-connect prompt. The specific purpose of this receipt endpoint is unclear beyond its URL 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'/api/v1/transactions/244/receipt':40 '/docs':168 '/pricing':169 '/readme':172 '0.02':10,24,70,142,224 '000':131 '0x8335':136 '20':130 '244':111 '2913':137 '300':152 '6':146 'Base network API' 'USDC payment API' 'accept':120 'access':34 'across':213 'ai':215 'ai/ml':60 'analyt':59,214 'api':56,81 'application/json':159 'attach':92 'base':8,22,78,132,139 'behind':41 'beyond':161 'broad':49 'call':55 'caller':90 'categori':219 'challeng':114 'commit':87 'confirm':115 'connect':178 'data':58,63 'decim':147 'descript':197 'detail':185,230 'document':160,231 'either':232 'endpoint':30,102,117,212 'equal':141 'exact':126 'exact-schem':125 'exampl':192 'financ':216 'finance/web3':62 'given':143 'header':96 'id':110 'includ':229 'infer':61 'infrastructur':65 'json':202 'json-response' 'key':82 'land':163,207 'limit':84 'list':209 'live':119 'lowpaymentfee' 'lowpaymentfee.com':32 'mani':210 'micropay':6,20 'mime':156 'network':9,23,79 'no-api-key' 'none':228 'openapi':189 'oper':47 'page':164,173,208 'pay':53 'pay-per-cal':52 'pay-per-call' 'pay-per-request' 'payload':194 'payment':95,128,149 'paywal':44 'per':11,25,54,71 'point':226 'post':121 'price':68,225 'probe':103 'prompt':180 'provid':33,46,205 'rate':83 'receipt':2,16,38,107,200 'receipt endpoint' 'render':175 'request':12,26,72,99,122 'request/response':193 'requir':89 'resourc':39 'respons':155 'retriev':3,17 'return':105 'schema':203 'scheme':127 'second':153 'settl':73 'simpli':91 'span':57 'spars':166 'spec':190 'specif':101 'suit':50 'technic':184 'timeout':150 'transact':1,15,37,109 'transaction receipt API' 'transaction-receipt' 'type':157 'unit':133 'upfront':86 'usdc':14,28,75,135,144 'usdc-base' 'util':66,218 'via':4,18 'wallet':179 'x402':5,19,43,94,113 'x402 micropayment' 'x402-payment'","prices":[{"id":"5498b424-0da3-45d0-beb7-f1e1a3f2a17d","listingId":"046a599a-46a8-48d4-88d8-282e2827c053","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/244/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":"2026-04-18T18:59:34.224Z"}],"sources":[{"listingId":"046a599a-46a8-48d4-88d8-282e2827c053","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/244/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:59:34.224Z","lastSeenAt":"2026-04-25T07:03:42.812Z"}],"details":{"listingId":"046a599a-46a8-48d4-88d8-282e2827c053","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/244/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 x402 challenge with maxAmountRequired 20000 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/transactions/244/receipt"},{"claim":"All APIs priced at $0.02 per request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/transactions/244/receipt"}],"useCases":["Retrieving a JSON receipt for a specific transaction via micropayment","Programmatic access to transaction data without API key registration","Agent-driven workflows that need proof-of-transaction receipts"],"bestFor":["Agents or scripts that need on-demand transaction receipts without signup","Developers exploring x402 payment-gated API patterns","Low-volume, pay-as-you-go access to transaction data"],"notFor":["Bulk retrieval of many transaction receipts (no batch endpoint documented)","Users who need detailed API documentation or OpenAPI specs before integrating","Production systems requiring SLA guarantees or support"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:40.83Z"},"updatedAt":"2026-04-25T07:03:42.812Z"}}