{"id":"c7c0c3d5-68d3-4e57-828d-59b04ce47c24","shortId":"46ZHba","kind":"x402","title":"x402-payable API suite on Base: analytics, AI, finance, and utility endpoints at $0.02/request.","tagline":"x402-payable API suite on Base: analytics, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com offers a collection of pay-per-call API endpoints accessible via the x402 payment protocol on the Base network. The specific endpoint at `/api/v1/generate/resource/96` is listed as \"Premium API Access\" and accepts USDC payments on Base. The x402 challenge indicates a max amount of 20,000 base units of USDC (6 decimals), which equals $0.02 per request — consistent with the site's advertised flat pricing.\n\nThe broader platform advertises endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.\n\nHowever, the specific functionality of `/api/v1/generate/resource/96` is not documented beyond the generic \"Premium API Access\" label. The docs, pricing, and API pages all returned only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI schema, no request/response examples, and no detailed documentation available from the crawl. The endpoint is live and returns a valid x402 402 challenge, but what it actually generates or returns upon successful payment is unknown.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","no-api-key","data-analytics","ai-inference","finance-data","utility-services"],"categories":["general","llm","finance"],"synonyms":["low payment fee API","x402 API","pay-per-call API","micropayment API","Base USDC API","crypto-paid API","lowpaymentfee"],"warnings":["The specific functionality of /api/v1/generate/resource/96 is undocumented — it is unclear what this endpoint generates or returns upon payment.","All documentation pages (docs, pricing, API, README) returned only 'Connect wallet' with no usable content.","No OpenAPI schema or request/response examples are available.","The platform lists many endpoints but none have detailed documentation visible from the crawl."],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/96","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/96","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 ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and the actual functionality behind 'Premium API Access' at resource/96 is completely undocumented. The docs and other pages returned only wallet-connect prompts with no 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'/request':16,32 '0.02':15,31,89,146 '000':80 '20':79 '402':219 '6':85 'Base USDC API' 'accept':66 'access':44,64,175 'across':105 'actual':224 'addit':192 'advertis':97,103 'ai':9,25,115 'ai-inference' 'amount':77 'analysi':119 'analyt':8,24,109 'api':4,20,42,63,151,174,181 'avail':206 'base':7,23,52,70,81 'beyond':170 'broader':101 'call':41 'categori':107 'challeng':73,220 'classif':122 'collect':36 'commit':159 'connect':187 'consist':92 'content':193 'convers':139 'crawl':209 'crypto-paid API' 'data':108,112 'data-analytics' 'decim':86 'detail':204 'doc':178 'document':169,205 'embed':123 'endpoint':13,29,43,56,104,142,211 'equal':88 'estim':133 'exampl':201 'exchang':128 'export':113 'feed':127 'financ':10,26,124 'finance-data' 'flat':98 'four':106 'function':164 'gas':132 'generat':140,225 'generic':172 'geocod':137 'howev':161 'indic':74 'infrastructur':135 'insight':114 'key':152 'label':176 'learn':117 'limit':155 'list':60,144 'live':213 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':33 'machin':116 'max':76 'metric':110 'micropayment API' 'minimum':158 'network':53 'no-api-key' 'offer':34 'openapi':197 'page':182 'pay':39 'pay-per-cal':38 'pay-per-call API' 'pay-per-request' 'payabl':3,19 'payment':48,68,230 'per':40,90,147 'platform':102 'premium':62,173 'price':99,126,179 'prompt':189 'protocol':49 'quot':131 'rate':129,154 'report':111 'request':91,148 'request/response':200 'requir':160 'return':184,215,227 'schema':198 'sentiment':118 'site':95 'specif':55,163 'success':229 'suit':5,21 'summar':121 'text':120 'token':130 'unit':82 'unknown':232 'upon':228 'usdc':67,84 'usdc-base' 'util':12,28,136 'utility-services' 'valid':138,217 'via':45 'wallet':188 'web3':125 'x402':2,18,47,72,218 'x402 API' 'x402-payable':1,17 'x402-payment'","prices":[{"id":"632f0ad0-c617-4cd2-8c50-cedda9a6db46","listingId":"c7c0c3d5-68d3-4e57-828d-59b04ce47c24","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/96","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:37:42.698Z"}],"sources":[{"listingId":"c7c0c3d5-68d3-4e57-828d-59b04ce47c24","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/96","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:37:42.698Z","lastSeenAt":"2026-04-22T11:31:07.788Z"}],"details":{"listingId":"c7c0c3d5-68d3-4e57-828d-59b04ce47c24","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/96 \\\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 x402 challenge returns maxAmountRequired of 20000 base units of USDC (USD Coin) on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/96"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers endpoints in Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/96"}],"useCases":["Agents needing on-demand API access without pre-registration or API keys","Micropayment-gated data retrieval or generation tasks","Programmatic access to analytics, AI inference, or financial data via x402"],"bestFor":["AI agents that can settle x402 payments in USDC on Base","Developers wanting zero-signup, pay-as-you-go API access","Low-cost per-request utility and data endpoints"],"notFor":["Users who need detailed documentation or guaranteed SLAs before purchasing","High-volume batch processing where per-request pricing adds up","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:44.162Z"},"updatedAt":"2026-04-22T11:31:07.788Z"}}