{"id":"07a0ec12-193f-4625-9539-932273eda790","shortId":"jq5aDp","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/59` sits within 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, payable 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 on-chain using USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The payment timeout is 300 seconds. The endpoint returns application/json responses.\n\nHowever, the specific functionality of `/api/v1/accounts/59` is unclear. It does not correspond to any of the documented API categories on the landing page (analytics, AI, finance, infrastructure). The description is simply \"Premium API Access\" with no further detail on what data or service it returns. Documentation pages (/docs, /pricing, /README) all rendered only a \"Connect wallet\" prompt with no substantive content. Without an OpenAPI schema, request/response examples, or detailed docs, the actual behavior of this endpoint remains opaque.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","post-method"],"categories":["api-gateway","crypto"],"synonyms":["x402 API","pay-per-call API","USDC API access","Base network API","micropayment API","lowpaymentfee","premium API"],"warnings":["The specific functionality of /api/v1/accounts/59 is not documented anywhere — it does not match any listed API category on the landing page.","All documentation pages (/docs, /pricing, /README, /api) returned only a 'Connect wallet' prompt with no substantive content.","No OpenAPI schema, request body format, or response schema is available.","The endpoint's actual behavior and output are unknown — use at your own risk."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/59","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/59","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 there is no documentation, no OpenAPI schema, no request/response examples, and the specific purpose of /api/v1/accounts/59 is undocumented. All doc pages returned only 'Connect wallet' with no 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'/docs':195 '/pricing':196 '/readme':197 '/request':13,28 '0.02':12,27,77,132 '000':127 '0x8335':117 '20':126 '2913':118 '300':141 '6':135 'Base network API' 'USDC API access' 'accept':105 'access':7,22,38,181 'actual':219 'ai':61,172 'amount':124 'analyt':60,171 'api':6,21,37,56,89,165,180 'application/json':146 'base':9,24,85,120,128 'behavior':220 'broader':51 'call':4,19 'categori':57,166 'chain':113 'challeng':98 'commit':94 'confirm':99 'connect':202 'content':208 'contract':116 'correspond':159 'data':59,188 'decim':136 'descript':176 'detail':185,216 'doc':217 'document':164,193 'endpoint':32,70,101,144,223 'equal':131 'exampl':214 'financ':64,173 'function':151 'howev':148 'includ':58 'infrastructur':67,174 'json-response' 'key':90 'land':169 'learn':63 'limit':92 'live':103 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'maximum':123 'micropayment API' 'multipl':55 'network':86 'no-api-key' 'offer':54 'on-chain':111 'opaqu':225 'openapi':211 'page':170,194 'pay':2,17 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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/59","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:52.931Z"}],"sources":[{"listingId":"07a0ec12-193f-4625-9539-932273eda790","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/59","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:52.931Z","lastSeenAt":"2026-04-24T02:02:03.569Z"}],"details":{"listingId":"07a0ec12-193f-4625-9539-932273eda790","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/59 \\\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 pricing is $0.02 per request with no API keys, rate limits, or commitments","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge confirms USDC on Base with maxAmountRequired of 20000 base units ($0.02)","source_url":"https://lowpaymentfee.com/api/v1/accounts/59"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/59"},{"claim":"Platform lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing a paid API endpoint without needing API keys or subscriptions","Making on-chain micropayments for per-request API access on Base","Integrating x402-compatible agents with pay-as-you-go endpoints"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents with x402 payment capabilities on Base","Users who prefer on-chain USDC micropayments over subscriptions"],"notFor":["Users needing detailed documentation or guaranteed SLAs before integrating","Anyone looking for free or high-volume bulk-discounted API access","Use cases requiring known, well-documented response schemas"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:37.704Z"},"updatedAt":"2026-04-24T02:02:03.569Z"}}