{"id":"911c207e-ba0d-4c77-b340-b04d8b02148c","shortId":"4dqHhS","kind":"x402","title":"Pay-per-call transaction receipt endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call transaction receipt endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This x402-enabled endpoint at lowpaymentfee.com provides a \"Premium API Access\" receipt for transaction ID 177. It is part of a broader platform offering dozens of pay-per-call API endpoints across categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint `/api/v1/transactions/177/receipt` accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) via the x402 \"exact\" scheme. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. The payment is directed to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a timeout of 300 seconds.\n\nThe platform's landing page lists many other endpoints at similar pricing, covering sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, and more. However, documentation pages (docs, pricing, README) all returned only a \"Connect wallet\" prompt with no substantive content, so the actual response schema and detailed functionality of this specific receipt endpoint remain unclear.","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"],"warnings":["Documentation pages (/docs, /pricing, /README, /api) all return only 'Connect wallet' with no substantive content","No OpenAPI or schema documentation available for request or response formats","The endpoint is for a specific transaction ID (177); it is unclear whether this is a generic pattern or a fixed resource","The broader platform lists many endpoints but none have documented schemas"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/177/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/177/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no OpenAPI schema, no response examples, and all documentation pages return only a wallet-connect prompt. The specific purpose of this receipt endpoint (transaction 177) is unclear, and no input/output schemas are available beyond the basic x402 challenge 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'/request':17,34 '0.02':16,33,84,139 '000':130 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':147 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':118 '177':51 '20':129 '300':152 '6':135 'Base network API' 'USDC micropayment API' 'accept':102 'access':46 'across':68 'actual':200 'address':146 'ai':73 'amount':126 'analysi':168 'analyt':72 'api':45,66,89 'base':9,26,113,131 'base-network' 'broader':57 'call':4,21,65 'categori':69 'classif':171 'commit':96 'connect':191 'content':197 'contract':117 'cover':166 'data':71 'decim':136 'detail':204 'direct':144 'doc':184 'document':182 'dozen':60 'embed':172 'enabl':38 'endpoint':7,24,39,67,100,162,210 'equal':138 'exact':122 'exchang':175 'feed':174 'financ':76 'function':205 'geocod':177 'howev':181 'id':50 'includ':70 'infrastructur':79 'json':107 'json-response' 'key':90 'land':157 'learn':75 'limit':93 'list':159 'lowpaymentfee' 'lowpaymentfee.com':41 'machin':74 'mani':160 'maximum':125 'network':114 'no-api-key' 'offer':59 'page':158,183 'part':54 'pay':2,19,63 'pay-per-cal':1,18,62 'pay-per-call' 'pay-per-request API' 'payment':108,142 'per':3,20,64,85 'platform':58,155 'post':103 'premium':44 'price':82,165,173,185 'prompt':193 'provid':42 'rate':92,176 'readm':186 'receipt':6,23,47,209 'remain':211 'request':86,104 'requir':97,127 'respons':201 'return':106,188 'schema':202 'scheme':123 'second':153 'sentiment':167 'settl':12,29,110 'similar':164 'specif':99,208 'substant':196 'summar':170 'text':169 'timeout':150 'transact':5,22,49 'transaction receipt API' 'transaction-receipt' 'unclear':212 'unit':132 'usd':140 'usdc':14,31,116,134 'usdc-settlement' 'use':115 'util':80 'valid':178 'via':10,27,119 'wallet':192 'web3':77 'x402':11,28,37,121 'x402 payment endpoint' 'x402-enabled':36 'x402-payment'","prices":[{"id":"b9d55321-67f7-4b97-b2d1-b53b69a8d2cf","listingId":"911c207e-ba0d-4c77-b340-b04d8b02148c","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/177/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":"2026-04-18T18:58:49.752Z"}],"sources":[{"listingId":"911c207e-ba0d-4c77-b340-b04d8b02148c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/177/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:58:49.752Z","lastSeenAt":"2026-04-24T21:32:28.721Z"}],"details":{"listingId":"911c207e-ba0d-4c77-b340-b04d8b02148c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/177/receipt \\\n  -H \"X-PAYMENT: <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":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/transactions/177/receipt"},{"claim":"Platform lists APIs across data, AI, finance, and infrastructure categories all priced at $0.02/request","source_url":"https://lowpaymentfee.com"},{"claim":"No API keys, no rate limits, instant access, Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/transactions/177/receipt"}],"useCases":["Retrieving a transaction receipt for transaction 177 via a single paid API call","Demonstrating x402 payment flow on Base with USDC","Integrating pay-per-call receipt retrieval into automated agent workflows"],"bestFor":["Agents needing on-demand transaction receipts without API key management","Developers exploring x402 payment protocol integrations","Low-volume, pay-as-you-go API consumption on Base"],"notFor":["High-volume batch receipt retrieval (no documented bulk endpoints)","Users who need detailed API documentation before integrating (docs are sparse)","Non-crypto users who cannot settle payments in USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:42.941Z"},"updatedAt":"2026-04-24T21:32:28.721Z"}}