{"id":"396c7fb4-25e5-471e-aad7-ca86f939d4fe","shortId":"qYr7y2","kind":"x402","title":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","tagline":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","description":"lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/accounts/30` is listed as \"Premium API Access\" and returns a 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) per call. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an x402 payment header to each request.\n\nThe broader platform offers 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 priced at $0.02 per request.\n\nThis particular endpoint (`/api/v1/accounts/30`) falls under \"Premium API Access\" but the crawled documentation provides no further detail on what data or functionality it returns. The docs, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content. Without an OpenAPI schema, example responses, or detailed documentation, the exact behavior of this endpoint remains unclear.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","no-api-key","json-response","http-post"],"categories":["api-platform","data"],"synonyms":["low payment fee","x402 api","pay per call api","usdc api","base network api","micropayment api","accounts endpoint"],"warnings":["No OpenAPI or schema documentation available for this endpoint","Docs, pricing, and README pages render only 'Connect wallet' with no useful content","The exact functionality of /api/v1/accounts/30 ('Premium API Access') is not described anywhere in the crawled material","Cannot verify what data or service this endpoint actually provides"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/30","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/30","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 there is no OpenAPI schema, no example request/response, and the docs pages are empty beyond a wallet-connect prompt. The purpose of '/api/v1/accounts/30' specifically is undocumented, making this effectively a stub 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'/request':13,28 '0.02':12,27,78,149 '000':72 '20':71 '402':66 'accept':46 'access':62,92,160 'accounts endpoint' 'across':108 'addit':191 'advertis':83 'ai':118 'analysi':122 'analyt':112 'api':5,20,38,61,85,159 'attach':95 'base':8,23,51,73 'base network api' 'behavior':204 'broader':104 'call':4,19,80 'caller':93 'categori':110 'challeng':67 'classif':125 'connect':186 'content':192 'convers':142 'crawl':163 'data':111,115,171 'detail':168,200 'doc':177 'document':164,201 'embed':126 'endpoint':55,107,145,154,207 'estim':136 'exact':203 'exampl':197 'exchang':131 'export':116 'fall':156 'feed':130 'financ':127 'four':109 'function':173 'gas':135 'generat':143 'geocod':140 'header':99 'http-post' 'i.e':77 'infrastructur':138 'insight':117 'instant':91 'json-response' 'key':86 'learn':120 'limit':89 'list':58 'low payment fee' 'lowpaymentfee.com':31 'machin':119 'metric':113 'micropayment api' 'network':9,24,52 'no-api-key' 'offer':106 'openapi':195 'page':181 'particular':153 'pay':2,17,35 'pay per call api' 'pay-per-cal':1,16 'pay-per-request':34 'payment':48,98 'per':3,18,36,79,150 'platform':6,21,39,82,105 'premium':60,158 'price':129,147,178 'prompt':188 'protocol':44 'provid':165 'quot':134 'rate':88,132 'readm':180 'remain':208 'render':183 'report':114 'request':37,68,102,151 'respons':198 'return':64,175 'schema':196 'sentiment':121 'simpli':94 'specif':54 'summar':124 'text':123 'token':133 'unclear':209 'unit':74 'usdc':15,30,47,76 'usdc api' 'usdc-base-network' 'use':41 'util':139 'valid':141 'via':10,25 'wallet':187 'web3':128 'without':193 'x402':11,26,43,97 'x402 api' 'x402-payment'","prices":[{"id":"0ac4a428-06c4-4a21-8043-6e15aa651d88","listingId":"396c7fb4-25e5-471e-aad7-ca86f939d4fe","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/30","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:29.961Z"}],"sources":[{"listingId":"396c7fb4-25e5-471e-aad7-ca86f939d4fe","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/30","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:29.961Z","lastSeenAt":"2026-04-24T20:02:15.413Z"}],"details":{"listingId":"396c7fb4-25e5-471e-aad7-ca86f939d4fe","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/30 \\\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 challenge requesting up to 20,000 base units of USDC ($0.02) on Base network","source_url":"https://lowpaymentfee.com/api/v1/accounts/30"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/30"},{"claim":"The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium account data with per-request USDC micropayments","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to various data and utility endpoints"],"bestFor":["Developers wanting zero-signup, pay-per-call API access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integrating","High-volume consumers who need bulk pricing or rate-limit guarantees","Users without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:38.753Z"},"updatedAt":"2026-04-24T20:02:15.413Z"}}