{"id":"1ed71665-d0e1-4178-957f-1d81f499efbe","shortId":"vja8jB","kind":"x402","title":"x402-gated transaction receipt endpoint on Base, paid per-call in USDC.","tagline":"x402-gated transaction receipt endpoint on Base, paid per-call in USDC.","description":"This endpoint at lowpaymentfee.com provides access to a transaction receipt (resource ID 292) behind an x402 paywall. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) via the x402 \"exact\" scheme. The maximum amount required per call is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals).\n\nThe broader lowpaymentfee.com platform advertises a suite of x402-gated APIs spanning data & analytics (metrics, reports, data export, insights), AI & ML (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nHowever, the specific endpoint being listed here — `/api/v1/transactions/292/receipt` — is not documented among the advertised API categories on the landing page. Its purpose appears to be retrieving a receipt for a specific transaction (ID 292). No request body schema, response schema, or detailed documentation is available for this endpoint. The docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","transaction-receipt","json-response","per-call-pricing","no-api-key"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 paid endpoint","USDC micropayment API","Base network API","pay-per-call API","lowpaymentfee","receipt endpoint"],"warnings":["This specific endpoint (/api/v1/transactions/292/receipt) is not listed among the platform's advertised APIs — its purpose and output are unclear.","No request body schema or response schema is available; integration requires trial and error.","All documentation pages (docs, API, pricing, README) returned only a 'Connect wallet' prompt with no substantive content.","The endpoint appears to be for a single hardcoded transaction ID (292), limiting general utility."],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/292/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/292/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and the specific endpoint is not listed among the platform's advertised APIs. Docs pages returned only 'Connect wallet' with no 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'0.02':86,141 '000':79 '0x8335':64 '20':78 '2913':65 '292':41,188 '6':89 'Base network API' 'USDC micropayment API' 'accept':48 'access':34 'advertis':95,168 'ai':111 'among':166 'amount':73 'analysi':114 'analyt':105 'api':102,146,169,205 'appear':177 'avail':199 'base':8,22,59,80 'base-network' 'behind':42 'bodi':191 'broader':92 'call':12,26,76 'categori':170 'classif':117 'commit':153 'connect':214 'content':220 'contract':63 'convers':134 'data':104,108 'decim':90 'detail':196 'doc':204 'document':165,197 'embed':118 'endpoint':6,20,30,47,137,158,202 'equal':85 'estim':128 'exact':69 'exchang':123 'export':109 'feed':122 'financ':119 'gas':127 'gate':3,17,101 'generat':135 'geocod':132 'howev':155 'id':40,187 'infrastructur':130 'insight':110 'json':53 'json-response' 'key':147 'land':173 'limit':150 'list':139,160 'lowpaymentfee' 'lowpaymentfee.com':32,93 'maximum':72 'metric':106 'ml':112 'network':60 'no-api-key' 'page':174,209 'paid':9,23 'pay-per-call API' 'payment':54 'paywal':45 'per':11,25,75,142 'per-cal':10,24 'per-call-pricing' 'platform':94 'post':49 'price':121,206 'prompt':216 'provid':33 'purpos':176 'quot':126 'rate':124,149 'readm':208 'receipt':5,19,38,182 'receipt endpoint' 'report':107 'request':50,143,190 'requir':74,154 'resourc':39 'respons':193 'retriev':180 'return':52,211 'schema':192,194 'scheme':70 'sentiment':113 'settl':56 'span':103 'specif':157,185 'substant':219 'suit':97 'summar':116 'text':115 'token':125 'transact':4,18,37,186 'transaction receipt API' 'transaction-receipt' 'unit':81 'usdc':14,28,62,83,87 'usdc-settlement' 'use':61,88 'util':131 'valid':133 'via':66 'wallet':215 'web3':120 'x402':2,16,44,68,100 'x402 paid endpoint' 'x402-gated':1,15,99 'x402-payment'","prices":[{"id":"c5b6ef90-d712-47b5-8a2a-0f8776af6ff0","listingId":"1ed71665-d0e1-4178-957f-1d81f499efbe","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/292/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":"2026-04-18T18:59:49.464Z"}],"sources":[{"listingId":"1ed71665-d0e1-4178-957f-1d81f499efbe","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/292/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:59:49.464Z","lastSeenAt":"2026-04-24T13:03:15.547Z"}],"details":{"listingId":"1ed71665-d0e1-4178-957f-1d81f499efbe","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/292/receipt\n# Returns 402 with x402 payment challenge.\n# Include X-PAYMENT header with a valid x402 payment token to receive the receipt.","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requiring USDC payment on Base network with maxAmountRequired of 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/transactions/292/receipt"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/transactions/292/receipt"},{"claim":"The platform lists APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving a transaction receipt for transaction ID 292 via a single paid API call","Demonstrating x402 payment protocol integration for agent-to-agent commerce","Testing low-cost per-request USDC micropayments on Base"],"bestFor":["Developers experimenting with x402 protocol payments","Agents needing to fetch transaction receipts with crypto micropayments","Projects requiring keyless, pay-per-call API access on Base"],"notFor":["Bulk retrieval of many different transaction receipts (only ID 292 is exposed at this URL)","Users who need detailed API documentation or OpenAPI schemas before integrating","Applications requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:40.129Z"},"updatedAt":"2026-04-24T13:03:15.547Z"}}