{"id":"ceb42392-5898-496e-b961-a5b006d5f26c","shortId":"8c4NuU","kind":"x402","title":"x402-gated API suite on Base: analytics, AI, finance, and utility endpoints at $0.02/request.","tagline":"x402-gated API suite on Base: analytics, AI, finance, and utility endpoints at $0.02/request.","description":"lowpaymentfee.com is an x402-enabled API platform that offers a broad collection of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and general-purpose utilities. All endpoints are pay-per-call with no API keys, no rate limits, and no commitments — payment is handled inline via the x402 protocol on the Base network using USDC.\n\nThe specific endpoint at `/api/v1/generate/resource/34` is listed as \"Premium API Access\" and accepts POST requests. The x402 challenge confirms it is live, requesting a maximum of 20,000 base units of USDC (0.02 USD) per call, settled on Base to a specified wallet address. The broader platform advertises a uniform $0.02 per request across all its endpoints.\n\nDocumentation is extremely sparse — the /docs, /pricing, /api, and /README pages all resolve to a minimal \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples. The site's landing page lists endpoint paths and prices but provides no detail on expected inputs or outputs. As a result, it is unclear what data or functionality `/api/v1/generate/resource/34` actually returns. Agents should treat this as a low-documentation endpoint and test carefully before relying on it in production.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-base","no-api-key","no-rate-limit","post-endpoint","json-response"],"categories":["infrastructure","general"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access","crypto-paid API"],"warnings":["No documentation available — /docs, /pricing, /api, and /README pages are all empty stubs.","No OpenAPI or schema definition; request and response formats are completely unknown.","The endpoint name 'Premium API Access' and path '/resource/34' are generic and do not describe functionality.","Cannot verify what data or service this endpoint actually provides."],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/34","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/34","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 spec, no request/response schema, and no examples. The endpoint name 'Premium API Access' and path '/api/v1/generate/resource/34' give almost no indication of what it actually does. All non-landing pages returned only 'Connect wallet' with no 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'/api/v1/generate/resource/34':95,213 '/docs':153 '/pricing':154 '/readme':157 '/request':16,32 '0.02':15,31,123,141 '000':118 '20':117 'Base network API' 'USDC micropayment API' 'accept':103 'access':101 'across':144 'actual':214 'address':134 'advertis':138 'agent':216 'ai':9,25 'ai/ml':51 'analyt':8,24,50 'api':4,20,39,69,100 'base':7,23,87,119,129 'broad':44 'broader':136 'call':66,126 'care':228 'challeng':108 'collect':45 'commit':76 'confirm':109 'connect':164 'content':170 'crypto-paid API' 'data':49,54,210 'detail':197 'document':148,179,224 'enabl':38 'endpoint':13,29,47,61,93,147,190,225 'exampl':183 'expect':199 'extrem':150 'financ':10,26 'finance/web3':53 'function':212 'gate':3,19 'general':57 'general-purpos':56 'handl':79 'infer':52 'inlin':80 'input':200 'json-response' 'key':70 'land':187 'limit':73 'list':97,189 'live':112 'low':223 'low-document':222 'lowpaymentfee' 'lowpaymentfee.com':33 'maximum':115 'minim':163 'network':88 'no-api-key' 'no-rate-limit' 'offer':42 'openapi':174 'output':202 'page':158,188 'path':191 'pay':64 'pay-per-cal':63 'pay-per-call API' 'pay-per-request' 'payment':77 'per':65,125,142 'platform':40,137 'post':104 'post-endpoint' 'premium':99 'premium API access' 'price':193 'product':234 'prompt':166 'protocol':84 'provid':195 'purpos':58 'rate':72 'reli':230 'request':105,113,143 'request/response':177 'resolv':160 'result':205 'return':215 'schema':178 'settl':127 'site':185 'span':48 'spars':151 'spec':175 'specif':92 'specifi':132 'suit':5,21 'test':227 'treat':218 'unclear':208 'uniform':140 'unit':120 'usag':182 'usd':124 'usdc':90,122 'usdc-base' 'use':89 'util':12,28,59 'via':81 'wallet':133,165 'x402':2,18,37,83,107 'x402 API' 'x402-enabled':36 'x402-gated':1,17 'x402-payment'","prices":[{"id":"8e3a5a83-4e92-4fea-8a27-380b745d10de","listingId":"ceb42392-5898-496e-b961-a5b006d5f26c","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/34","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:38:03.729Z"}],"sources":[{"listingId":"ceb42392-5898-496e-b961-a5b006d5f26c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/34","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:38:03.729Z","lastSeenAt":"2026-04-22T12:03:15.633Z"}],"details":{"listingId":"ceb42392-5898-496e-b961-a5b006d5f26c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/34 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{}'","exampleRequest":{"url":"https://lowpaymentfee.com/api/v1/generate/resource/34","body":{},"method":"POST","headers":{"X-PAYMENT":"<x402_payment_token>","Content-Type":"application/json"}},"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, equaling $0.02.","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/34"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The site lists endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories.","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) resolve to minimal 'Connect wallet' content only.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Paying per-call for API access without managing API keys or subscriptions","Integrating x402 payment flows into agent-based workflows","Accessing miscellaneous utility/generation endpoints with instant crypto settlement"],"bestFor":["Developers wanting zero-signup, pay-as-you-go API access","AI agents that can settle x402 payments on Base","Prototyping workflows that need cheap, keyless API calls"],"notFor":["Production systems requiring well-documented, schema-validated APIs","Users who need fiat/credit-card payment options","High-throughput batch processing where per-request pricing may add up"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:43.124Z"},"updatedAt":"2026-04-22T12:03:15.633Z"}}