{"id":"a3f45aad-9897-497d-bf53-025f8abe86c9","shortId":"byPPPN","kind":"x402","title":"Pay-per-call transaction receipt endpoint on Base via x402, priced at $0.02 in USDC.","tagline":"Pay-per-call transaction receipt endpoint on Base via x402, priced at $0.02 in USDC.","description":"This x402-enabled endpoint at lowpaymentfee.com provides a \"Premium API Access\" receipt resource for transaction ID 94. It is part of a broader platform offering multiple pay-per-request API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/transactions/94/receipt` returns a JSON response upon payment of up to 20,000 base units of USDC (i.e., $0.02, since USDC uses 6 decimals). Payment is made via the x402 protocol's \"exact\" scheme: callers include an X-PAYMENT header with a signed payment to the designated payTo address. No API keys, rate limits, or upfront commitments are required — access is instant once payment is verified on-chain.\n\nThe platform's landing page lists 16 endpoints across four categories, all at the same $0.02 price point. Documentation pages (docs, pricing, README) appear to require a wallet connection and contain no additional readable content. There is no OpenAPI schema, no detailed request/response documentation, and no example payloads available from the crawl. The exact data returned by this particular receipt endpoint is unclear beyond its JSON MIME type.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","transaction-receipt","json-response"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 paid endpoint","USDC micropayment API","Base network API","pay-per-call API","lowpaymentfee","crypto payment API"],"warnings":["No OpenAPI or schema documentation available for this endpoint","Documentation, pricing, and README pages require wallet connection and have no readable content","The specific data returned by the /transactions/94/receipt endpoint is undocumented","Purpose of 'transaction 94' receipt is unclear — may be a demo or placeholder resource"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/94/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/94/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 captured) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, no documentation beyond a landing page listing, and the specific purpose of this receipt endpoint is vague. Docs pages all require wallet connection with no readable 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'0.02':14,30,80,111,178 '000':105 '16':169 '20':104 '6':115 '94':50 'Base network API' 'USDC micropayment API' 'access':44,153 'across':171 'addit':195 'address':142 'ai':69 'analyt':68 'api':43,64,144 'appear':186 'avail':211 'base':9,25,89,106 'base-network' 'beyond':226 'broader':56 'call':4,20 'caller':127 'categori':65,173 'chain':162 'commit':150 'connect':191 'contain':193 'content':197 'crawl':214 'crypto payment API' 'data':67,217 'decim':116 'design':140 'detail':204 'doc':183 'document':181,206 'enabl':36 'endpoint':7,23,37,93,170,223 'exact':125,216 'exampl':209 'financ':72 'four':172 'header':133 'i.e':110 'id':49 'includ':66,128 'infrastructur':75 'instant':155 'json':97,228 'json-response' 'key':145 'land':166 'learn':71 'limit':147 'list':168 'lowpaymentfee' 'lowpaymentfee.com':39 'machin':70 'made':119 'mime':229 'multipl':59 'network':90 'offer':58 'on-chain':160 'openapi':201 'page':167,182 'part':53 'particular':221 'pay':2,18,61 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request':60 'payload':210 'payment':100,117,132,137,157 'payto':141 'per':3,19,62,81 'platform':57,164 'point':180 'premium':42 'price':12,28,78,179,184 'protocol':123 'provid':40 'rate':146 'readabl':196 'readm':185 'receipt':6,22,45,222 'request':63,82 'request/response':205 'requir':152,188 'resourc':46 'respons':98 'return':95,218 'schema':202 'scheme':126 'settl':84 'sign':136 'sinc':112 'specif':92 'transact':5,21,48 'transaction receipt API' 'transaction-receipt' 'type':230 'unclear':225 'unit':107 'upfront':149 'upon':99 'usdc':16,32,86,109,113 'usdc-settlement' 'use':114 'util':76 'verifi':159 'via':10,26,120 'wallet':190 'web3':73 'x':131 'x-payment':130 'x402':11,27,35,122 'x402 paid endpoint' 'x402-enabled':34 'x402-payment'","prices":[{"id":"3c5f8b33-b92e-46ce-835c-7d1cf3a7044f","listingId":"a3f45aad-9897-497d-bf53-025f8abe86c9","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/94/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":"2026-04-18T19:27:16.705Z"}],"sources":[{"listingId":"a3f45aad-9897-497d-bf53-025f8abe86c9","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/94/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:27:16.705Z","lastSeenAt":"2026-04-23T23:03:17.326Z"}],"details":{"listingId":"a3f45aad-9897-497d-bf53-025f8abe86c9","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/94/receipt\n# Returns 402 with x402 challenge. Include X-PAYMENT header with signed USDC payment on Base to access.","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge, maxAmountRequired 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/transactions/94/receipt"},{"claim":"Platform lists 16 endpoints across 4 categories all priced at $0.02 per request","source_url":"https://lowpaymentfee.com"},{"claim":"No API keys, no rate limits, instant access, Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving a transaction receipt for transaction 94 via a single micropayment","Demonstrating x402 protocol integration for pay-per-request APIs","Agent-driven on-chain payment for API access without API keys"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can sign USDC payments on Base for per-call API access","Use cases requiring keyless, permissionless API access"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integrating","High-volume batch retrieval where per-call pricing is inefficient","Users without a Base-compatible wallet or USDC balance"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:35.587Z"},"updatedAt":"2026-04-23T23:03:17.326Z"}}