{"id":"9476f534-5618-46b2-9703-5b41e9b5394a","shortId":"QEahGz","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 `/api/v1/accounts/71` is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. All endpoints are priced at $0.02 per request, settled in USDC on the Base network with no API keys, no rate limits, and no commitments required.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and requiring payment of up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02) per call. Payment is made via the x402 \"exact\" scheme to the specified payTo address. The response MIME type is application/json.\n\nHowever, the specific functionality of `/api/v1/accounts/71` is unclear. The provider's landing page lists various API categories (analytics, AI, finance, utilities) but does not document an `/accounts/` path. No OpenAPI spec, request/response schemas, or detailed documentation were found — the docs, pricing, and README pages all rendered only a \"Connect wallet\" prompt. Without knowing what data or service this particular endpoint returns, callers should treat it as an opaque premium resource until further documentation is available.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","post-method"],"categories":["api","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access","crypto-paid API"],"warnings":["The specific endpoint /api/v1/accounts/71 is not listed or documented on the provider's landing page — its purpose is unknown.","No OpenAPI specification or request/response schemas are available.","All documentation pages (docs, pricing, README, api) render only a 'Connect wallet' prompt with no usable content.","The platform lists many endpoint categories but provides no detailed docs for any of them."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/71","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/71","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, the specific purpose of /api/v1/accounts/71 is undocumented, there is no OpenAPI spec, no request/response schema, and all documentation pages returned only a wallet-connect prompt. The listing is essentially a stub with confirmed liveness and pricing but no functional 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'/api/v1/accounts/71':47,152 '/request':13,28 '0.02':12,27,75,125 '000':114 '0x8335':119 '20':113 '2913':120 '6':123 'Base network API' 'USDC micropayment API' 'accept':104 'access':7,22,38 'address':140 'ai':61,165 'analyt':60,164 'api':6,21,37,87,162 'application/json':146 'avail':221 'base':9,24,83,115,122 'call':4,19,127 'caller':208 'categori':69,163 'challeng':98 'commit':94 'confirm':99 'connect':195 'crypto-paid API' 'data':59,201 'decim':124 'detail':181 'doc':186 'document':171,182,219 'endpoint':32,52,71,101,206 'exact':134 'financ':64,166 'found':184 'function':150 'howev':147 'infrastructur':67 'json-response' 'key':88 'know':199 'land':158 'learn':63 'limit':91 'list':160 'live':103 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'made':130 'mani':51 'mime':143 'network':84 'no-api-key' 'offer':53 'one':49 'opaqu':214 'openapi':176 'page':159,190 'particular':205 'path':174 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,109,128 'payto':139 'per':3,18,76,126 'platform':56 'post':105 'post-method' 'premium':5,20,36,215 'premium API access' 'price':73,187 'prompt':197 'protocol':43 'provid':35,156 'rate':90 'readm':189 'render':192 'request':77,106 'request/response':178 'requir':95,108 'resourc':46,216 'respons':142 'return':207 'schema':179 'scheme':135 'servic':203 'settl':78 'span':58 'spec':177 'specif':45,149 'specifi':138 'treat':210 'type':144 'unclear':154 'unit':116 'usdc':15,30,80,118 'usdc-base' 'util':68,167 'various':161 'via':10,25,39,131 'wallet':196 'web3':65 'without':198 'x402':11,26,41,97,133 'x402 API' 'x402-payment'","prices":[{"id":"bcf49013-10d1-4f22-8e86-491b12e6d4e4","listingId":"9476f534-5618-46b2-9703-5b41e9b5394a","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/71","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:03.689Z"}],"sources":[{"listingId":"9476f534-5618-46b2-9703-5b41e9b5394a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/71","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:03.689Z","lastSeenAt":"2026-04-22T18:31:08.018Z"}],"details":{"listingId":"9476f534-5618-46b2-9703-5b41e9b5394a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/71 \\\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":"Endpoint returns 402 with x402 challenge requiring up to 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/71"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/accounts/71"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to premium data or services with per-request USDC micropayments","Agent-driven workflows that need keyless, on-demand API calls settled on Base","Integrating pay-as-you-go endpoints without subscription commitments"],"bestFor":["Developers wanting no-signup, pay-per-use API access","AI agents with x402-compatible wallets on Base","Projects needing low-cost micropayment-gated endpoints"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","Applications requiring free or fiat-only payment methods","Use cases needing the specific /accounts/71 resource to be well-documented"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:37.22Z"},"updatedAt":"2026-04-22T18:31:08.018Z"}}