{"id":"3909c9f0-e0aa-479c-845a-d3046d6b3277","shortId":"WeA6zG","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/196` 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, 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 to a specified wallet address using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base). The maxAmountRequired of 20000 base units corresponds to $0.02 (USDC uses 6 decimals). The response MIME type is application/json.\n\nHowever, the specific functionality of the `/api/v1/accounts/196` path is unclear — it is not listed among the documented endpoints on the landing page, and no OpenAPI schema, request/response examples, or detailed documentation are available. The docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. Without knowing what data or service this particular account endpoint returns, consumers should treat this as an opaque premium endpoint until further documentation is provided.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","post-method"],"categories":["api","payments"],"synonyms":["x402 API","pay-per-call API","USDC micropayment endpoint","Base network API","lowpaymentfee","premium API access","crypto-paid API"],"warnings":["The specific endpoint /api/v1/accounts/196 is not listed among the documented APIs on the landing page — its purpose is unknown.","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no substantive content.","No OpenAPI schema or request/response examples are available.","The actual data or service returned by this endpoint cannot be verified without making a paid request."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/196","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/196","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/196 is undocumented. No OpenAPI schema, no request/response examples, and all doc pages are empty beyond a wallet connect prompt. This is effectively a stub 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'/request':13,28 '0.02':12,27,75,131 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':120 '20000':126 '6':134 'Base network API' 'USDC micropayment endpoint' 'accept':103 'access':7,22,38 'account':201 'address':116 'ai':61 'among':156 'analyt':60 'api':6,21,37,87,178 'application/json':141 'avail':174 'base':9,24,83,122,127 'call':4,19 'categori':69 'chain':111 'challeng':96 'commit':92 'confirm':97 'connect':186 'consum':204 'content':192 'contract':119 'correspond':129 'crypto-paid API' 'data':59,196 'decim':135 'detail':171 'doc':176 'document':158,172,215 'endpoint':32,52,71,99,159,202,212 'exampl':169 'financ':64 'function':145 'howev':142 'infrastructur':67 'json-response' 'key':88 'know':194 'land':162 'learn':63 'limit':90 'list':155 'live':101 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'mani':51 'maxamountrequir':124 'mime':138 'network':84 'no-api-key' 'offer':53 'on-chain':109 'one':49 'opaqu':210 'openapi':166 'page':163,181 'particular':200 'path':46,149 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payabl':78 'payment':42,106 'per':3,18,76 'platform':56 'post':104 'post-method' 'premium':5,20,36,211 'premium API access' 'price':73,177 'prompt':188 'protocol':43 'provid':35,217 'rate':89 'readm':180 'render':183 'request':77,105 'request/response':168 'requir':93 'respons':137 'return':203 'schema':167 'servic':198 'settl':108 'span':58 'specif':45,144 'specifi':114 'substant':191 'treat':206 'type':139 'unclear':151 'unit':128 'usdc':15,30,80,118,132 'usdc-base' 'use':117,133 'util':68 'via':10,25,39 'wallet':115,187 'web3':65 'without':193 'x402':11,26,41,95 'x402 API' 'x402-payment'","prices":[{"id":"3d22b7e4-2cb5-4d82-93ad-fec2ea6511fd","listingId":"3909c9f0-e0aa-479c-845a-d3046d6b3277","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/196","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:47.584Z"}],"sources":[{"listingId":"3909c9f0-e0aa-479c-845a-d3046d6b3277","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/196","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:47.584Z","lastSeenAt":"2026-04-22T15:01:02.724Z"}],"details":{"listingId":"3909c9f0-e0aa-479c-845a-d3046d6b3277","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/196 \\\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":"Platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","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/196"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/196"}],"useCases":["Programmatic access to premium data or services without traditional API key signup","Agent-driven workflows that need on-demand paid API calls settled in USDC on Base","Testing x402 payment protocol integrations with a low-cost endpoint"],"bestFor":["Developers exploring x402 pay-per-call patterns","AI agents with Base USDC wallets needing instant API access","Users who want no-signup, no-rate-limit API consumption"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Anyone without a Base-compatible USDC wallet","Use cases requiring free or subscription-based pricing"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:32.145Z"},"updatedAt":"2026-04-22T15:01:02.724Z"}}