{"id":"e9b90a47-590a-4f9e-9ec7-6bc4bd8de9cc","shortId":"gFbTHq","kind":"x402","title":"Pay-per-call transaction receipt endpoint on Base via x402, $0.02/request in USDC.","tagline":"Pay-per-call transaction receipt endpoint on Base via x402, $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides a transaction receipt retrieval service accessible via the x402 payment protocol. The specific resource `/api/v1/transactions/134/receipt` returns a JSON receipt for transaction ID 134, gated behind a per-request USDC payment on the Base network.\n\nThe provider operates a broader platform offering multiple API 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 minimum commitments. Payment is settled on-chain using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests with an exact payment scheme. The maxAmountRequired of 20000 base units (USDC has 6 decimals) equals $0.02 per call. The payment timeout is 300 seconds. No OpenAPI schema, detailed documentation, or example responses were found beyond the landing page listing.","tags":[],"capabilities":["x402-payment","per-request-billing","transaction-receipt","usdc-on-base","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 payment endpoint","pay-per-call API","USDC micropayment","Base network API","lowpaymentfee","crypto payment gateway"],"warnings":["No API documentation available—docs, pricing, and README pages only show a wallet-connect prompt","No request or response schema documented; actual output format is unknown","The endpoint path references a specific transaction ID (134), unclear if this is parameterized or fixed","Provider platform appears to list many endpoints but none have visible documentation beyond titles"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/134/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/134/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 via 402 challenge and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no example payloads, and the docs/pricing/README pages all render only a wallet-connect prompt with no useful content. The specific purpose of 'transaction 134 receipt' is 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'/request':13,28 '0.02':12,27,95,148 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':118 '134':58 '20000':140 '300':155 '6':145 'Base network API' 'USDC micropayment' 'accept':129 'access':41 'ai':84 'analyt':83 'api':79,100 'base':9,24,69,120,141 'behind':60 'beyond':167 'broader':75 'call':4,19,150 'categori':80 'chain':114 'challeng':123 'commit':108 'confirm':124 'contract':117 'crypto payment gateway' 'data':82 'decim':146 'detail':160 'document':161 'endpoint':7,22,32,126 'equal':147 'exact':134 'exampl':163 'financ':87 'found':166 'gate':59 'id':57 'includ':81 'infrastructur':90 'json':53 'json-response' 'key':101 'land':169 'learn':86 'limit':104 'list':171 'live':128 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':85 'maxamountrequir':138 'minimum':107 'multipl':78 'network':70 'no-api-key' 'offer':77 'on-chain':112 'openapi':158 'oper':73 'page':170 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'payment':45,66,109,135,152 'per':3,18,63,96,149 'per-request':62 'per-request-billing' 'platform':76 'post':130 'price':93 'protocol':46 'provid':35,72 'rate':103 'receipt':6,21,38,54 'request':64,97,131 'resourc':49 'respons':164 'retriev':39 'return':51 'schema':159 'scheme':136 'second':156 'servic':40 'settl':111 'specif':48 'timeout':153 'transact':5,20,37,56 'transaction receipt API' 'transaction-receipt' 'unit':142 'usdc':15,30,65,116,143 'usdc-on-base' 'use':115 'util':91 'via':10,25,42 'web3':88 'x402':11,26,44,122 'x402 payment endpoint' 'x402-payment'","prices":[{"id":"20ad3253-9e7d-470e-b48b-6f10dde7cd56","listingId":"e9b90a47-590a-4f9e-9ec7-6bc4bd8de9cc","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/134/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":"2026-04-18T18:58:34.581Z"}],"sources":[{"listingId":"e9b90a47-590a-4f9e-9ec7-6bc4bd8de9cc","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/134/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:58:34.581Z","lastSeenAt":"2026-04-25T00:05:09.748Z"}],"details":{"listingId":"e9b90a47-590a-4f9e-9ec7-6bc4bd8de9cc","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/134/receipt \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\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 challenge requiring 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/transactions/134/receipt"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/transactions/134/receipt"}],"useCases":["Retrieving transaction receipts programmatically with per-call payment","Integrating pay-as-you-go APIs without subscription or API key management","Agent-driven workflows that need on-chain payment verification for transactions"],"bestFor":["Developers wanting zero-commitment API access paid in USDC","AI agents that can settle x402 payments autonomously on Base","Projects needing transaction receipt data without account setup"],"notFor":["High-volume batch processing where per-call fees add up quickly","Users without a Base-compatible wallet or USDC holdings","Applications requiring detailed API documentation or SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:43.717Z"},"updatedAt":"2026-04-25T00:05:09.748Z"}}