{"id":"1788e000-f977-4311-93aa-7c1df1a87e87","shortId":"Ym4tkj","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 transaction receipt for transaction ID 233 via a POST request. It is part of a broader platform offering multiple API categories — data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced uniformly at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint `/api/v1/transactions/233/receipt` returns a JSON response and is gated by an x402 payment challenge. Payment is settled on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The payment timeout is 300 seconds. The endpoint was confirmed live, returning a proper 402 challenge with x402 version 1.\n\nThe platform's documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all appear to be behind a wallet-connect gate and contain no substantive content in the crawl. As a result, there is no detailed API documentation, request/response schema, or usage examples available beyond what the x402 challenge and the landing page provide. The exact nature of the \"receipt\" data returned after payment is not documented in the crawled material.","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":["All documentation pages (/docs, /pricing, /api, /README) returned only a 'Connect wallet' prompt with no usable content.","No request body schema or response schema is documented — the output of this endpoint after payment is unknown.","The endpoint is hardcoded to transaction ID 233; it is unclear whether this is a demo or a real transaction receipt.","The broader platform lists many API categories (AI, analytics, finance, utilities) but none were probed; only this single receipt endpoint is confirmed live."],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/233/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/233/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 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no API documentation, no request/response schema, no examples, and the docs pages are all behind a wallet-connect wall with no content. The specific purpose of this particular receipt endpoint (transaction 233) is 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'/api/v1/transactions/233/receipt':96 '/docs':161 '/pricing':162 '/readme':164 '/request':17,34 '0.02':16,33,79,131 '000':126 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':119 '1':155 '20':125 '233':49 '300':140 '402':150 '6':134 'Base network API' 'USDC micropayment API' 'ai':67 'amount':123 'analyt':66 'api':63,84,190 'appear':166 'avail':197 'base':9,26,114,127 'base-network' 'behind':169 'beyond':198 'broader':59 'call':4,21 'categori':64 'challeng':108,151,202 'commit':91 'confirm':145 'connect':173 'contain':176 'content':179 'contract':118 'crawl':182,223 'crypto payment gateway' 'data':65,214 'decim':135 'detail':189 'document':159,191,220 'enabl':38 'endpoint':7,24,39,95,143 'equal':130 'exact':209 'exampl':196 'financ':70 'gate':103,174 'id':48 'infrastructur':73 'json':99 'json-response' 'key':85 'land':205 'learn':69 'limit':88 'live':146 'lowpaymentfee' 'lowpaymentfee.com':41 'machin':68 'materi':224 'maximum':122 'multipl':62 'natur':210 'network':115 'no-api-key' 'offer':61 'page':160,206 'part':56 'pay':2,19 'pay-per-cal':1,18 'pay-per-call' 'pay-per-request API' 'payment':107,109,137,217 'per':3,20,80 'platform':60,157 'post':52 'price':76 'proper':149 'provid':42,207 'rate':87 'receipt':6,23,45,213 'request':53,81 'request/response':192 'requir':92 'respons':100 'result':185 'return':97,147,215 'schema':193 'second':141 'settl':12,29,111 'specif':94 'substant':178 'timeout':138 'transact':5,22,44,47 'transaction receipt API' 'transaction-receipt' 'uniform':77 'unit':128 'usag':195 'usdc':14,31,117,132 'usdc-settlement' 'use':116,133 'util':74 'version':154 'via':10,27,50 'wallet':172 'wallet-connect':171 'web3':71 'x402':11,28,37,106,153,201 'x402 payment endpoint' 'x402-enabled':36 'x402-payment'","prices":[{"id":"a7a6e548-53f8-46f3-b488-32fb3c3d79eb","listingId":"1788e000-f977-4311-93aa-7c1df1a87e87","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/233/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":"2026-04-18T18:59:31.775Z"}],"sources":[{"listingId":"1788e000-f977-4311-93aa-7c1df1a87e87","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/233/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:59:31.775Z","lastSeenAt":"2026-04-24T16:03:18.428Z"}],"details":{"listingId":"1788e000-f977-4311-93aa-7c1df1a87e87","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/233/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":"Endpoint returns 402 with x402 version 1 challenge, accepting USDC on Base network with maxAmountRequired of 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/transactions/233/receipt"},{"claim":"Platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/transactions/233/receipt"},{"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 233 via a single paid API call","Demonstrating x402 payment protocol integration for agent-to-service commerce","Programmatic access to receipt data without traditional API key management"],"bestFor":["Developers experimenting with x402 payment protocol on Base","Agents needing keyless, pay-per-call API access settled in USDC","Low-friction one-off data retrieval without subscription commitments"],"notFor":["Bulk or high-volume receipt retrieval (no documented batch endpoints)","Users who need detailed API documentation or response schema before purchasing","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:40.936Z"},"updatedAt":"2026-04-24T16:03:18.428Z"}}