{"id":"d3ed570a-5290-49b4-b4c1-fd2b29ff71fe","shortId":"GzAcar","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/93` 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 payment of up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) to wallet address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3. The payment scheme is \"exact\" on the Base network with a 300-second timeout. The response MIME type is application/json.\n\nHowever, the specific functionality of the `/api/v1/accounts/93` endpoint is unclear. The platform's landing page lists various API categories (analytics, AI, finance, utilities) but does not include an \"accounts\" endpoint in its public catalog. There is no OpenAPI spec, no detailed documentation (docs/pricing/API pages all render only a \"Connect wallet\" prompt), and no request/response schema beyond the x402 challenge metadata. The endpoint appears to be a valid, live x402 resource, but its exact purpose and expected input/output format remain undocumented.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","json-response","no-api-key","post-method"],"categories":["api-gateway","payments"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","crypto-paid API","402 payment endpoint"],"warnings":["The specific endpoint /api/v1/accounts/93 is not listed in the platform's public API catalog — its purpose is unknown.","No OpenAPI spec or request/response schema is available.","All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no actual content.","The exact functionality and expected input for this endpoint cannot be determined from available sources."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/93","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/93","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, but there is no documentation, no OpenAPI spec, no request/response examples, and the specific purpose of /api/v1/accounts/93 is not described anywhere in the crawled material. The docs, pricing, and API pages all render only a wallet-connect prompt with no useful 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'/request':13,28 '0.02':12,27,75,120 '000':115 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':130 '20':114 '300':142 '402 payment endpoint' '6':125 'Base network API' 'USDC micropayment API' 'accept':105 'access':7,22,38 'account':179 'address':129 'ai':61,171 'analyt':60,170 'api':6,21,37,87,168 'appear':213 'application/json':150 'base':9,24,83,116,138 'beyond':206 'call':4,19 'catalog':184 'categori':69,169 'challeng':99,209 'commit':95 'confirm':100 'connect':199 'crypto-paid API' 'data':59 'decim':126 'detail':191 'docs/pricing/api':193 'document':192 'endpoint':32,52,71,102,158,180,212 'exact':135,223 'expect':226 'financ':64,172 'format':228 'function':154 'howev':151 'includ':177 'infrastructur':67 'input/output':227 'json-response' 'key':88 'land':164 'learn':63 'limit':91 'list':166 'live':104,218 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'mani':51 'metadata':210 'mime':147 'minimum':94 'network':84,139 'no-api-key' 'offer':53 'one':49 'openapi':188 'page':165,194 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,110,132 'per':3,18,76 'platform':56,162 'post':106 'post-method' 'premium':5,20,36 'price':73 'prompt':201 'protocol':43 'provid':35 'public':183 'purpos':224 'rate':90 'remain':229 'render':196 'request':77,107 'request/response':204 'requir':96,109 'resourc':46,220 'respons':146 'schema':205 'scheme':133 'second':143 'settl':78 'sinc':122 'span':58 'spec':189 'specif':45,153 'timeout':144 'type':148 'unclear':160 'undocu':230 'unit':117 'usd':121 'usdc':15,30,80,119,123 'usdc-base-network' 'use':124 'util':68,173 'valid':217 'various':167 'via':10,25,39 'wallet':128,200 'web3':65 'x402':11,26,41,98,208,219 'x402 API' 'x402-payment'","prices":[{"id":"21bddc1b-00ed-4e11-ae7c-19286f650314","listingId":"d3ed570a-5290-49b4-b4c1-fd2b29ff71fe","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/93","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:19.535Z"}],"sources":[{"listingId":"d3ed570a-5290-49b4-b4c1-fd2b29ff71fe","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/93","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:19.535Z","lastSeenAt":"2026-04-24T09:03:18.235Z"}],"details":{"listingId":"d3ed570a-5290-49b4-b4c1-fd2b29ff71fe","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/93 \\\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/93"},{"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":"The platform offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/93"}],"useCases":["Accessing premium API data with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to various data and utility services"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents that can settle x402 payments autonomously","Users already holding USDC on the Base network"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integrating","Applications requiring free or fiat-only payment methods","High-volume use cases where per-request pricing may add up"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:36.398Z"},"updatedAt":"2026-04-24T09:03:18.235Z"}}