{"id":"ca86faad-e48c-413d-86e1-3720c855952f","shortId":"xKSCkM","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific resource path `/api/v1/accounts/171` is part of a broader platform that offers multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled in USDC (contract 0x8335…2913 on Base) to address 0x1A2B…85F3, with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The payment timeout is 300 seconds. The endpoint returns application/json responses.\n\nHowever, the specific functionality of the `/api/v1/accounts/171` path is not documented on the site's landing page — it does not appear among the listed API categories. The crawled docs, pricing, and README pages all returned only a \"Connect wallet\" prompt with no additional documentation. Without an OpenAPI schema, request/response examples, or detailed docs, the exact input parameters and output format for this particular endpoint remain unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","no-api-key","post-method"],"categories":["api-marketplace","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC API","Base network API","micropayment API","lowpaymentfee","premium API access"],"warnings":["The specific endpoint /api/v1/accounts/171 is not listed among the platform's documented APIs — its exact functionality is unknown.","All documentation pages (docs, pricing, README, api) returned only 'Connect wallet' with no usable content.","No OpenAPI schema or request/response examples are available.","The purpose of the 'accounts/171' resource is unclear — it may be a generic or placeholder endpoint."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/171","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/accounts/171","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 the specific functionality of /api/v1/accounts/171 is undocumented. No OpenAPI schema, no request/response examples, and all doc pages return only 'Connect wallet'. This is effectively a stub 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'/request':13,28 '0.02':12,27,79,134 '000':130 '0x1a2b':122 '0x8335':116 '20':129 '2913':117 '300':144 '6':138 '85f3':123 'Base network API' 'USDC API' 'accept':107 'access':7,22,38 'addit':193 'address':121 'ai':63 'among':172 'amount':127 'analyt':62 'api':6,21,37,58,91,175 'appear':171 'application/json':149 'base':9,24,87,119,131 'base-network' 'broader':53 'call':4,19 'categori':59,176 'challeng':100 'commit':96 'confirm':101 'connect':188 'contract':115 'crawl':178 'data':61 'decim':139 'detail':202 'doc':179,203 'document':161,194 'endpoint':32,72,103,147,214 'exact':205 'exampl':200 'financ':66 'format':210 'function':154 'given':135 'howev':151 'i.e':133 'includ':60 'infrastructur':69 'input':206 'json-response' 'key':92 'land':166 'learn':65 'limit':94 'list':174 'live':105 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':64 'maximum':126 'micropayment API' 'multipl':57 'network':88 'no-api-key' 'offer':56 'openapi':197 'output':209 'page':167,183 'paid':82 'paramet':207 'part':50 'particular':213 'path':47,158 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,110,141 'per':3,18,80 'platform':54,75 'post':108 'post-method' 'premium':5,20,36 'premium API access' 'price':77,180 'prompt':190 'protocol':43 'provid':35 'rate':93 'readm':182 'remain':215 'request':81,109 'request/response':199 'requir':97 'resourc':46 'respons':150 'return':148,185 'schema':198 'second':145 'settl':112 'site':164 'specif':45,153 'timeout':142 'unit':132 'unknown':216 'usdc':15,30,84,114,136 'usdc-settlement' 'util':70 'via':10,25,39 'wallet':189 'web3':67 'without':195 'x402':11,26,41,99 'x402 API' 'x402-payment'","prices":[{"id":"82c49284-e335-484a-9973-140fa5ac4d69","listingId":"ca86faad-e48c-413d-86e1-3720c855952f","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/accounts/171","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:26.507Z"}],"sources":[{"listingId":"ca86faad-e48c-413d-86e1-3720c855952f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/171","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:26.507Z","lastSeenAt":"2026-04-23T06:04:01.320Z"}],"details":{"listingId":"ca86faad-e48c-413d-86e1-3720c855952f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/171 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Platform lists APIs at $0.02/request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base with 300s timeout","source_url":"https://lowpaymentfee.com/api/v1/accounts/171"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/171"}],"useCases":["Accessing premium account data with per-request USDC micropayments","Integrating pay-as-you-go API calls into agent workflows without API key management","Programmatic access to account-level resources on the lowpaymentfee.com platform"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents that can settle x402 payments in USDC on Base","Users who prefer no subscription commitments or rate limits"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","Applications requiring free or subscription-based pricing models","Users not set up for USDC payments on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:33.207Z"},"updatedAt":"2026-04-23T06:04:01.320Z"}}