{"id":"bc365c08-9286-4300-b901-467a8c0b3e71","shortId":"bYXN5d","kind":"x402","title":"Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request.","tagline":"Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com is an x402-enabled API platform that provides a broad catalog of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and general utility services. All endpoints are paid per-request using USDC on the Base network via the x402 protocol — no API keys, no rate limits, and no subscriptions required.\n\nThe specific endpoint at `/api/v1/generate/resource/32` is listed as \"Premium API Access\" and accepts POST requests. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0.02 USD per call, since USDC uses 6 decimals). Payment is settled on-chain to a specified address using the \"exact\" scheme. The platform advertises uniform $0.02 pricing across all its endpoints.\n\nThe broader platform offers endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and data generation. However, documentation beyond the landing page is essentially empty (all doc/pricing/API pages just show \"Connect wallet\"), so the actual request/response schemas for this specific resource endpoint are unknown. Without documentation or examples, it is unclear what input this particular endpoint expects or what output it returns.","tags":[],"capabilities":["x402-payment","per-request-billing","usdc-base","no-api-key","post-endpoint","json-response"],"categories":["infrastructure","utility"],"synonyms":["pay-per-call API","x402 API","USDC micropayment API","Base network API","low fee API","crypto-paid endpoint","premium resource generation"],"warnings":["No API documentation available — all doc/pricing/API pages return only 'Connect wallet' with no content.","The purpose and expected input/output of /api/v1/generate/resource/32 is unknown; 'Premium API Access' is a generic label.","No OpenAPI spec, no request schema, and no response schema are provided.","The platform lists many endpoints but none have documented behavior beyond a name and price."],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/32","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/generate/resource/32","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC payments on Base at $0.02/request. However, there is no documentation, no OpenAPI schema, no request/response examples, and all doc pages are empty. The specific purpose of 'resource/32' is entirely 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'/request':19,38 '0.02':18,37,121,148 '000':116 '20':115 '6':128 'Base network API' 'USDC micropayment API' 'accept':104 'access':102 'across':150 'actual':198 'address':139 'advertis':146 'ai':12,31 'ai/ml':57 'analysi':161 'analyt':56 'api':5,24,45,83,101 'base':8,27,76,117 'beyond':182 'broad':50 'broader':155 'call':4,23,124 'catalog':51 'chain':135 'challeng':109 'classif':164 'connect':194 'convers':176 'cost':113 'crypto-paid endpoint' 'data':11,30,55,60,178 'decim':129 'doc/pricing/api':190 'document':181,209 'embed':165 'empti':188 'enabl':44 'endpoint':16,35,53,66,94,153,158,205,219 'essenti':187 'estim':173 'exact':142 'exampl':211 'exchang':168 'expect':220 'feed':167 'financ':13,32 'finance/web3':59 'gas':172 'general':62 'generat':179 'geocod':174 'howev':180 'indic':110 'infer':58 'input':216 'json-response' 'key':84 'land':184 'limit':87 'list':98 'low fee API' 'lowpaymentfee.com':39 'maximum':112 'network':77 'no-api-key' 'offer':10,29,157 'on-chain':133 'output':223 'page':185,191 'paid':68 'particular':218 'pay':2,21 'pay-per-cal':1,20 'pay-per-call API' 'payment':130 'per':3,22,70,123 'per-request':69 'per-request-billing' 'platform':6,25,46,145,156 'post':105 'post-endpoint' 'premium':100 'premium resource generation' 'price':149,166 'protocol':81 'provid':48 'quot':171 'rate':86,169 'request':71,106 'request/response':199 'requir':91 'resourc':204 'return':225 'schema':200 'scheme':143 'sentiment':160 'servic':64 'settl':132 'show':193 'sinc':125 'span':54 'specif':93,203 'specifi':138 'subscript':90 'summar':163 'text':162 'token':170 'unclear':214 'uniform':147 'unit':118 'unknown':207 'usd':122 'usdc':9,28,73,120,126 'usdc-base' 'use':72,127,140 'util':15,34,63 'valid':175 'via':78 'wallet':195 'without':208 'x402':43,80,108 'x402 API' 'x402-enabled':42 'x402-payment'","prices":[{"id":"50a569e7-0177-4cfe-b168-16955645d004","listingId":"bc365c08-9286-4300-b901-467a8c0b3e71","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/generate/resource/32","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:37:04.087Z"}],"sources":[{"listingId":"bc365c08-9286-4300-b901-467a8c0b3e71","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/32","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:37:04.087Z","lastSeenAt":"2026-04-28T19:03:49.797Z"}],"details":{"listingId":"bc365c08-9286-4300-b901-467a8c0b3e71","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/32 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","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/generate/resource/32"},{"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 endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation, pricing, API, and README pages all show only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to utility/generation services without API key management","Agent-driven workflows that need on-demand paid API calls settled in USDC","Integrating pay-per-use endpoints into Web3 applications on Base"],"bestFor":["Developers wanting zero-signup, pay-as-you-go API access","AI agents with USDC wallets on Base that need on-demand utility calls","Projects that prefer crypto micropayments over traditional billing"],"notFor":["Users who need detailed API documentation and request/response schemas before integrating","High-volume use cases where per-request pricing at $0.02 adds up significantly","Developers without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:45.962Z"},"updatedAt":"2026-04-28T19:03:49.797Z"}}