{"id":"4bb833f0-f3fa-4b6a-9179-f797fd9040a7","shortId":"XmHNv5","kind":"x402","title":"x402-gated transaction receipt endpoint on Base, paying $0.02 in USDC per request.","tagline":"x402-gated transaction receipt endpoint on Base, paying $0.02 in USDC per request.","description":"This endpoint at lowpaymentfee.com provides a transaction receipt resource via the x402 payment protocol. It is part of a broader platform that offers multiple pay-per-request API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per call and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/transactions/203/receipt` returns a JSON response (MIME type `application/json`) when a valid x402 payment header is supplied. The x402 challenge advertises a `maxAmountRequired` of 20,000 base units of USDC (asset `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`), which equals $0.02 given USDC's 6 decimals. The payment scheme is \"exact\" on the Base L2 network, with a 300-second timeout. No API keys or rate limits are required — access is gated purely by micropayment.\n\nDocumentation on the site is extremely thin: the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema beyond the x402 challenge's `outputSchema` stub, and no explanation of what data the receipt actually contains. The endpoint is confirmed live (returns HTTP 402 with a well-formed x402 challenge), but the lack of documentation makes it difficult to know what fields the receipt includes or what input parameters (if any) the POST body expects.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","transaction-receipt","pay-per-request","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 micropayment endpoint","USDC pay-per-call","Base network API","lowpaymentfee","crypto payment API","receipt endpoint"],"warnings":["No OpenAPI or schema documentation available — request body and response fields are unknown","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content","The specific resource '/api/v1/transactions/203/receipt' appears to be a single hardcoded transaction ID; it is unclear whether other transaction IDs are supported","No examples of successful responses are available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/203/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/203/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 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no examples, and the docs pages are empty stubs. The purpose of the specific receipt resource is unclear beyond its URL path. This is effectively a stub 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'0.02':10,24,73,120 '000':111 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':117 '20':110 '300':138 '402':212 '6':124 'Base network API' 'USDC pay-per-call' 'access':149 'actual':203 'advertis':106 'ai':62 'analyt':61 'api':57,142,164 'application/json':94 'asset':116 'base':8,22,82,112,133 'base-network' 'beyond':188 'bodi':243 'broader':48 'call':75 'categori':58 'challeng':105,191,219 'confirm':208 'connect':173 'contain':204 'content':179 'crypto payment API' 'data':60,200 'decim':125 'difficult':227 'doc':163 'document':155,224 'endpoint':6,20,30,86,206 'equal':119 'exact':130 'expect':244 'explan':197 'extrem':160 'field':231 'financ':65 'form':217 'gate':3,17,151 'given':121 'header':100 'http':211 'includ':59,234 'infrastructur':68 'input':237 'json':90 'json-response' 'key':143 'know':229 'l2':134 'lack':222 'learn':64 'limit':146 'live':209 'lowpaymentfee' 'lowpaymentfee.com':32 'machin':63 'make':225 'maxamountrequir':108 'micropay':154 'mime':92 'multipl':52 'network':83,135 'no-api-key' 'offer':51 'openapi':183 'outputschema':193 'page':168 'paramet':238 'part':45 'pay':9,23,54 'pay-per-request':53 'payment':41,99,127 'per':13,27,55,74 'platform':49 'post':242 'price':71,165 'prompt':175 'protocol':42 'provid':33 'pure':152 'rate':145 'readm':167 'receipt':5,19,36,202,233 'receipt endpoint' 'render':170 'request':14,28,56 'request/response':186 'requir':148 'resourc':37 'respons':91 'return':88,210 'schema':187 'scheme':128 'second':139 'settl':77 'site':158 'spec':184 'specif':85 'stub':194 'suppli':102 'thin':161 'timeout':140 'transact':4,18,35 'transaction receipt API' 'transaction-receipt' 'type':93 'unit':113 'usdc':12,26,79,115,122 'usdc-micropayment' 'util':69 'valid':97 'via':38 'wallet':174 'web3':66 'well':216 'well-form':215 'x402':2,16,40,98,104,190,218 'x402 micropayment endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"ffc8ac60-be66-450f-acc0-14ab5ebc3b70","listingId":"4bb833f0-f3fa-4b6a-9179-f797fd9040a7","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/203/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":"2026-04-18T18:59:10.846Z"}],"sources":[{"listingId":"4bb833f0-f3fa-4b6a-9179-f797fd9040a7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/203/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:59:10.846Z","lastSeenAt":"2026-04-24T18:33:04.642Z"}],"details":{"listingId":"4bb833f0-f3fa-4b6a-9179-f797fd9040a7","quickStartSnippet":"# Send a POST with an x402 payment header to access the receipt\ncurl -X POST https://lowpaymentfee.com/api/v1/transactions/203/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":"The endpoint returns HTTP 402 with x402 version 1 challenge advertising USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/transactions/203/receipt"},{"claim":"maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/transactions/203/receipt"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Platform 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 203 via micropayment","Programmatic access to receipt data without API key registration","Agent-driven workflows that need on-demand transaction documentation"],"bestFor":["Developers experimenting with x402 payment-gated APIs","Agents that can settle USDC micropayments on Base","Use cases requiring keyless, pay-per-call access to transaction receipts"],"notFor":["Production systems needing well-documented request/response schemas","Bulk retrieval of many transaction receipts (no batch endpoint documented)","Users who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:41.959Z"},"updatedAt":"2026-04-24T18:33:04.642Z"}}