{"id":"bf6b2780-4bb3-4190-ba19-c0cc8f9f9f05","shortId":"yhWGeH","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 path `/api/v1/accounts/112` 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 minimum commitments required.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and requiring an exact payment of 20,000 base units of USDC (0x8335…2913 on Base, which is 6 decimals → $0.02) per call. The response MIME type is application/json. The platform advertises instant access with wallet-based authentication rather than traditional API keys.\n\nHowever, the specific functionality of the `/api/v1/accounts/112` path is unclear — the provider labels it generically as \"Premium API Access\" and it does not appear in the site's listed API catalog. No OpenAPI schema, request/response examples, or detailed documentation were found during the crawl (docs, pricing, and API pages all returned only a \"Connect wallet\" prompt). Without knowing what data or service this particular endpoint returns, agents should treat it as an opaque paid endpoint until more documentation becomes available.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","no-api-key","post-method"],"categories":["api","infrastructure"],"synonyms":["premium API","paid API access","x402 endpoint","USDC API","Base network API","lowpaymentfee","micropayment API","pay-per-call API"],"warnings":["The specific endpoint /api/v1/accounts/112 is not listed in the provider's public API catalog — its purpose and response format are unknown.","All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no usable content.","No OpenAPI spec, request schema, or response examples are available.","The endpoint's function cannot be verified without making a paid request."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/112","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/112","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, but the specific functionality of /api/v1/accounts/112 is undocumented. No OpenAPI schema, no request/response examples, and the crawled docs/pricing/API pages are all behind a wallet-connect gate. The endpoint path does not appear in the site's public catalog, making its purpose 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'/request':13,28 '0.02':12,27,75,128 '000':115 '0x8335':120 '20':114 '2913':121 '6':126 'Base network API' 'USDC API' 'accept':105 'access':7,22,38,141,170 'advertis':139 'agent':218 'ai':61 'analyt':60 'api':6,21,37,87,150,169,181,199 'appear':175 'application/json':136 'authent':146 'avail':231 'base':9,24,83,116,123,145 'base-network' 'becom':230 'call':4,19,130 'catalog':182 'categori':69 'challeng':99 'commit':95 'confirm':100 'connect':205 'crawl':195 'data':59,211 'decim':127 'detail':189 'doc':196 'document':190,229 'endpoint':32,52,71,102,216,226 'exact':111 'exampl':187 'financ':64 'found':192 'function':155 'generic':166 'howev':152 'infrastructur':67 'instant':140 'json-response' 'key':88,151 'know':209 'label':164 'learn':63 'limit':91 'list':180 'live':104 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'mani':51 'micropayment API' 'mime':133 'minimum':94 'network':84 'no-api-key' 'offer':53 'one':49 'opaqu':224 'openapi':184 'page':200 'paid':225 'paid API access' 'particular':215 'path':46,159 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,112 'per':3,18,76,129 'platform':56,138 'post':106 'post-method' 'premium':5,20,36,168 'premium API' 'price':73,197 'prompt':207 'protocol':43 'provid':35,163 'rate':90 'rather':147 'request':77,107 'request/response':186 'requir':96,109 'respons':132 'return':202,217 'schema':185 'servic':213 'settl':78 'site':178 'span':58 'specif':45,154 'tradit':149 'treat':220 'type':134 'unclear':161 'unit':117 'usdc':15,30,80,119 'usdc-settlement' 'util':68 'via':10,25,39 'wallet':144,206 'wallet-bas':143 'web3':65 'without':208 'x402':11,26,41,98 'x402 endpoint' 'x402-payment'","prices":[{"id":"d23421e0-3c98-4da1-938d-ab5399ac8bf9","listingId":"bf6b2780-4bb3-4190-ba19-c0cc8f9f9f05","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/112","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:41.331Z"}],"sources":[{"listingId":"bf6b2780-4bb3-4190-ba19-c0cc8f9f9f05","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/112","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:41.331Z","lastSeenAt":"2026-04-22T16:30:58.302Z"}],"details":{"listingId":"bf6b2780-4bb3-4190-ba19-c0cc8f9f9f05","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/112 \\\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":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/112"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/112"},{"claim":"The platform offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing a pay-per-call API endpoint without needing traditional API key registration","Making programmatic requests settled in USDC on Base L2","Agent-driven API consumption with per-request crypto micropayments"],"bestFor":["Developers who want keyless, wallet-authenticated API access","Agents that can settle x402 payments in USDC on Base","Use cases requiring low-friction, no-commitment API calls"],"notFor":["Users who need detailed documentation or schema before integrating","Applications requiring free or subscription-based API access","Users without a Base-compatible wallet or USDC balance"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:35.408Z"},"updatedAt":"2026-04-22T16:30:58.302Z"}}