{"id":"2a0c3451-746f-462c-aecb-174aab2c52e1","shortId":"4PvzqC","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/162` is one of many endpoints offered by the provider, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints 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, accepting POST requests and settling payments in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base). The `maxAmountRequired` is 20000 base units, which at 6 decimals equals $0.02. The payment scheme is \"exact,\" meaning each request requires a single upfront micropayment. The endpoint returns `application/json` responses.\n\nHowever, the specific functionality of `/api/v1/accounts/162` is unclear. The provider's landing page lists various API categories (analytics, AI, finance, utilities) but does not document an `/accounts/` path. There is no OpenAPI spec, no detailed documentation (the /docs, /pricing, and /README pages all returned only a \"Connect wallet\" prompt), and no request/response schema beyond what the x402 challenge provides. The endpoint appears to be part of a broader platform demonstrating low-fee x402 micropayments, but the exact data or service returned by this particular account endpoint is not documented.","tags":[],"capabilities":["x402-payment","usdc-base-settlement","pay-per-request","json-response","no-api-key","micropayment"],"categories":["api-marketplace","payments"],"synonyms":["x402 API","micropayment API","pay-per-call API","USDC API access","Base network API","lowpaymentfee"],"warnings":["The specific functionality of /api/v1/accounts/162 is not documented anywhere on the provider's site.","No OpenAPI spec, request schema, or response schema is available.","All documentation pages (/docs, /pricing, /README) returned only a 'Connect wallet' prompt with no actual content.","The provider appears to be a demonstration or early-stage platform; reliability and longevity are unknown."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/162","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/162","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 spec, no request/response schema, and the specific purpose of /api/v1/accounts/162 is undocumented. The docs, pricing, and README pages are all empty beyond a wallet-connect 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'/api/v1/accounts/162':47,150 '/docs':182 '/pricing':183 '/readme':185 '/request':13,28 '0.02':12,27,76,126 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':112 '20000':118 '6':123 'Base network API' 'USDC API access' 'accept':103 'access':7,22,38 'account':230 'ai':63,163 'analyt':62,162 'api':6,21,37,88,160 'appear':206 'application/json':143 'base':9,24,84,114,119 'beyond':198 'broader':212 'call':4,19 'categori':59,161 'challeng':97,202 'commit':93 'confirm':98 'connect':191 'contract':111 'data':61,223 'decim':124 'demonstr':214 'detail':179 'document':169,180,234 'endpoint':32,52,72,100,141,205,231 'equal':125 'exact':131,222 'fee':217 'financ':66,164 'function':148 'howev':145 'includ':60 'infrastructur':69 'json-response' 'key':89 'land':156 'learn':65 'limit':91 'list':158 'live':102 'low':216 'low-fe':215 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':64 'mani':51 'maxamountrequir':116 'mean':132 'micropay':139,219 'micropayment' 'micropayment API' 'network':85 'no-api-key' 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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/162","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:18.708Z"}],"sources":[{"listingId":"2a0c3451-746f-462c-aecb-174aab2c52e1","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/162","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:18.708Z","lastSeenAt":"2026-04-23T06:04:01.033Z"}],"details":{"listingId":"2a0c3451-746f-462c-aecb-174aab2c52e1","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/162 \\\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":"All endpoints priced at $0.02 per request with no API keys, rate limits, or commitments","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/accounts/162"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/162"},{"claim":"Provider lists endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API data with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Testing x402 payment protocol integrations with low-cost endpoints"],"bestFor":["Developers experimenting with x402 micropayment protocols","AI agents needing keyless, pay-per-call API access","Projects wanting to avoid subscription commitments for occasional API calls"],"notFor":["Users needing well-documented, schema-specified API contracts","High-volume use cases where per-request pricing may add up","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:33.583Z"},"updatedAt":"2026-04-23T06:04:01.033Z"}}