{"id":"8a697dd0-4029-4682-b8a6-01fd80e005e5","shortId":"H2N6kA","kind":"x402","title":"Transaction receipt endpoint on Base, paid per-call via x402 with USDC.","tagline":"Transaction receipt endpoint on Base, paid per-call via x402 with USDC.","description":"This endpoint at lowpaymentfee.com provides access to a transaction receipt (resource ID 183) behind an x402 paywall. The broader lowpaymentfee.com platform advertises a suite of APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation) — all priced at $0.02 per request with no API keys, no rate limits, and no commitments.\n\nThe specific endpoint probed (`/api/v1/transactions/183/receipt`) returns a valid x402 challenge on POST, accepting payment in USDC on the Base network. The maxAmountRequired is 20,000 base units of USDC (6 decimals), which equals $0.02 per call. Payment is made via the x402 \"exact\" scheme to the specified wallet address, with a 300-second timeout. The response MIME type is application/json.\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 platform's landing page confirms the pricing model and lists available endpoints, but provides no technical detail about request parameters or response structures.","tags":[],"capabilities":["x402-payment","usdc-base","per-call-pricing","transaction-receipt","json-response","no-api-key","crypto-payment"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 paid endpoint","USDC micropayment API","Base network API","pay-per-call API","lowpaymentfee","web3 API"],"warnings":["No OpenAPI or schema documentation available — response structure is unknown","All documentation pages (/docs, /api, /pricing, /README) render only 'Connect wallet' with no content","The specific resource '/api/v1/transactions/183/receipt' is not listed among the platform's advertised endpoints — its purpose is unclear","No examples of request body or response payload exist in any crawled material"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/183/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/183/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 and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation of request parameters or response schema, and the docs/pricing/README pages are all blank beyond a wallet connect prompt. The specific purpose of 'transaction 183 receipt' is unexplained. This is effectively a stub 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'/api/v1/transactions/183/receipt':100 '/docs':161 '/pricing':163 '/readme':165 '0.02':83,129 '000':120 '183':39 '20':119 '300':147 '6':125 'Base network API' 'USDC micropayment API' 'accept':108 'access':32 'actual':195 'address':144 'advertis':48 'ai/ml':56 'analysi':59 'analyt':55 'api':52,88 'application/json':155 'avail':208 'base':5,18,114,121 'behind':40 'broader':45 'call':9,22,131 'challeng':105 'classif':61 'commit':95 'confirm':202 'connect':171 'contain':196 'content':177 'convers':78 'crypto-payment' 'data':54 'decim':126 'detail':214 'document':156,186 'embed':62 'endpoint':3,16,28,98,209 'equal':128 'estim':72 'exact':138 'exampl':189 'exchang':67 'extrem':158 'feed':66 'financ':63 'gas':71 'generat':79 'geocod':76 'id':38 'infer':57 'infrastructur':74 'json-response' 'key':89 'land':200 'limit':92 'list':207 'lowpaymentfee' 'lowpaymentfee.com':30,46 'made':134 'maxamountrequir':117 'mime':152 'model':205 'network':115 'no-api-key' 'openapi':181 'page':166,201 'paid':6,19 'paramet':217 'pay-per-call API' 'payload':194 'payment':109,132 'paywal':43 'per':8,21,84,130 'per-cal':7,20 'per-call-pricing' 'platform':47,198 'post':107 'price':65,81,204 'probe':99 'prompt':173 'provid':31,211 'quot':70 'rate':68,91 'receipt':2,15,36,193 'render':168 'request':85,216 'request/response':184 'resourc':37 'respons':151,219 'return':101 'schema':185 'scheme':139 'second':148 'sentiment':58 'span':53 'spars':159 'spec':182 'specif':97 'specifi':142 'structur':220 'suit':50 'summar':60 'technic':213 'timeout':149 'token':69 'transact':1,14,35 'transaction receipt API' 'transaction-receipt' 'type':153 'unit':122 'usdc':13,26,111,124 'usdc-base' 'util':75 'valid':77,103 'via':10,23,135 'wallet':143,172 'web3':64 'web3 API' 'x402':11,24,42,104,137 'x402 paid endpoint' 'x402-payment'","prices":[{"id":"6910254c-eba5-4328-8e05-351f538b40b5","listingId":"8a697dd0-4029-4682-b8a6-01fd80e005e5","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/183/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":"2026-04-18T18:59:00.022Z"}],"sources":[{"listingId":"8a697dd0-4029-4682-b8a6-01fd80e005e5","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/183/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:59:00.022Z","lastSeenAt":"2026-04-24T20:03:14.145Z"}],"details":{"listingId":"8a697dd0-4029-4682-b8a6-01fd80e005e5","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/183/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":"The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/transactions/183/receipt"},{"claim":"The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages render only a 'Connect wallet' prompt with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving a transaction receipt for resource ID 183 via a single micropayment","Demonstrating x402 protocol integration for pay-per-call APIs","Agent-driven programmatic access to paid data without API key management"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need keyless, pay-per-call API access on Base","Use cases requiring low-cost ($0.02) per-request pricing with USDC"],"notFor":["Users needing detailed API documentation or response schema guarantees","High-volume batch processing where per-call crypto payments add overhead","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:42.521Z"},"updatedAt":"2026-04-24T20:03:14.145Z"}}