{"id":"54b1e77b-8fd1-4fec-9ea8-fd470f1a28aa","shortId":"QLPk2q","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 215. It is part of a broader platform offering dozens of pay-per-request API endpoints across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all settled on the Base network using USDC at $0.02 per request via the x402 payment protocol.\n\nThe specific endpoint `/api/v1/transactions/215/receipt` accepts POST requests and returns JSON. The x402 challenge confirms it is live, requiring an exact payment of 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base, 6 decimals = $0.02) to wallet 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3. No API keys are needed; payment is the authentication. The platform advertises no rate limits and instant access.\n\nDocumentation is extremely sparse — 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 documentation, and no examples of what the receipt payload actually contains. The endpoint's purpose (retrieving a transaction receipt) is inferred from the URL path and the generic \"Premium API Access\" description. The broader platform lists many endpoints but provides no detailed documentation for any of them.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","transaction-receipt","pay-per-request","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 payment endpoint","USDC micropayment API","Base network API","pay-per-call API","lowpaymentfee","402 payment protocol"],"warnings":["No API documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content.","No OpenAPI or schema definition found; request body and response format are completely unknown.","This endpoint is for a specific resource (transaction 215 receipt); it is unclear if it generalizes to other transaction IDs.","The platform lists many endpoints on its homepage but provides zero documentation for any of them."],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/215/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/215/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). However, there is no documentation, no OpenAPI spec, no request/response examples, and the specific purpose of this single-resource endpoint (transaction 215 receipt) is unclear. The broader platform pages are empty beyond wallet-connect 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'/api/v1/transactions/215/receipt':96 '/docs':153 '/pricing':155 '/readme':157 '0.02':14,30,85,126 '000':116 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':129 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':121 '20':115 '215':50 '402 payment protocol' '6':124 'Base network API' 'USDC micropayment API' 'accept':97 'access':44,147,208 'across':67 'actual':187 'advertis':141 'ai/ml':70 'analyt':69 'api':43,65,131,207 'authent':138 'base':9,25,80,117,123 'base-network' 'broader':56,211 'call':4,20 'challeng':105 'confirm':106 'connect':163 'contain':188 'content':169 'data':68 'decim':125 'descript':209 'detail':219 'document':148,178,220 'dozen':59 'enabl':36 'endpoint':7,23,37,66,95,190,215 'exact':112 'exampl':181 'extrem':150 'finance/web3':72 'generic':205 'id':49 'infer':71,198 'infrastructur':74 'instant':146 'json':102 'json-response' 'key':132 'limit':144 'list':213 'live':109 'lowpaymentfee' 'lowpaymentfee.com':39 'mani':214 'need':134 'network':81 'no-api-key' 'offer':58 'openapi':173 'page':158 'part':53 'path':202 'pay':2,18,62 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request':61 'payload':186 'payment':91,113,135 'per':3,19,63,86 'platform':57,140,212 'post':98 'premium':42,206 'price':12,28 'prompt':165 'protocol':92 'provid':40,217 'purpos':192 'rate':143 'receipt':6,22,45,185,196 'render':160 'request':64,87,99 'request/response':176 'requir':110 'resourc':46 'retriev':193 'return':101 'schema':177 'settl':77 'spars':151 'spec':174 'specif':94 'transact':5,21,48,195 'transaction receipt API' 'transaction-receipt' 'unit':118 'url':201 'usdc':16,32,83,120 'usdc-settlement' 'use':82 'util':75 'via':10,26,88 'wallet':128,164 'x402':11,27,35,90,104 'x402 payment endpoint' 'x402-enabled':34 'x402-payment'","prices":[{"id":"92994e3a-8fb4-43d7-8fc3-83a1510f43ec","listingId":"54b1e77b-8fd1-4fec-9ea8-fd470f1a28aa","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/215/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":"2026-04-18T18:59:16.889Z"}],"sources":[{"listingId":"54b1e77b-8fd1-4fec-9ea8-fd470f1a28aa","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/215/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:59:16.889Z","lastSeenAt":"2026-04-24T18:33:04.847Z"}],"details":{"listingId":"54b1e77b-8fd1-4fec-9ea8-fd470f1a28aa","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/215/receipt\n# Returns 402 with x402 payment challenge.\n# Include X-PAYMENT header with a signed USDC payment on Base to complete the request.","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 20,000 base units of USDC on Base (= $0.02)","source_url":"https://lowpaymentfee.com/api/v1/transactions/215/receipt"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/transactions/215/receipt"},{"claim":"Platform advertises $0.02/request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving a transaction receipt for transaction 215 via a single paid API call","Programmatic access to receipt data without managing API keys or subscriptions","Agent-driven workflows that need to fetch financial transaction records on demand"],"bestFor":["Developers wanting keyless, pay-per-use API access settled in USDC on Base","AI agents that can handle x402 payment challenges natively","Users who need a single transaction receipt without committing to a subscription"],"notFor":["Bulk retrieval of many transaction receipts (no batch endpoint documented)","Users who need detailed API documentation or response schema guarantees before integrating","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:41.729Z"},"updatedAt":"2026-04-24T18:33:04.847Z"}}