{"id":"8eea4502-b978-4fa7-a9b2-066b2e248fe2","shortId":"vBjpKM","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/wire/165` is listed as \"Premium API Access\" and returns JSON responses. The x402 challenge confirms it is live, accepting payments of up to 20,000 base units of USDC (0.02 USD) per call, settled to a Base-network address.\n\nThe broader platform advertises multiple API categories including 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 with no API keys, no rate limits, and no minimum commitments required.\n\nHowever, the specific functionality behind `/api/v1/wire/165` (\"Premium API Access\") is not documented — it does not correspond to any of the named endpoints on the landing page. There is no OpenAPI schema, no request/response examples, and the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no additional content. Without knowing what this endpoint actually returns, callers should treat it as an opaque paid endpoint until further documentation is available.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","json-response","no-api-key"],"categories":["api-platform","crypto"],"synonyms":["x402 api","pay per call api","usdc api","base network api","micropayment api","lowpaymentfee","402 payment api"],"warnings":["The endpoint path /api/v1/wire/165 does not match any documented API on the landing page — its actual functionality is unknown.","No OpenAPI schema or request/response documentation is available.","All doc/pricing/API pages return only a 'Connect wallet' prompt with no substantive content.","The platform appears to be early-stage or a demo; treat with caution for production use."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/165","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/wire/165","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 the specific functionality of /api/v1/wire/165 is entirely undocumented. No OpenAPI schema, no request/response examples, and all documentation pages render only a wallet-connect prompt. The listing is effectively a 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'/request':13,28 '0.02':12,27,85,142 '000':80 '20':79 '402 payment api' 'accept':46,74 'access':62,165 'actual':214 'addit':207 'address':95 'advertis':99 'ai':111 'analysi':115 'analyt':105 'api':5,20,38,61,101,147,164,196 'avail':229 'base':8,23,51,81,93 'base network api' 'base-network':92 'behind':161 'broader':97 'call':4,19,88 'caller':216 'categori':102 'challeng':69 'classif':118 'commit':155 'confirm':70 'connect':202 'content':208 'convers':135 'correspond':172 'data':104,108 'doc':193 'document':168,227 'embed':119 'endpoint':55,138,178,213,224 'estim':129 'exampl':190 'exchang':124 'export':109 'feed':123 'financ':120 'function':160 'gas':128 'generat':136 'geocod':133 'howev':157 'includ':103 'infrastructur':131 'insight':110 'json':65 'json-response' 'key':148 'know':210 'land':181 'learn':113 'limit':151 'list':58 'live':73 'lowpaymentfee' 'lowpaymentfee.com':31 'machin':112 'metric':106 'micropayment api' 'minimum':154 'multipl':100 'name':177 'network':9,24,52,94 'no-api-key' 'opaqu':222 'openapi':186 'page':182,197 'paid':223 'pay':2,17,35 'pay per call api' 'pay-per-cal':1,16 'pay-per-request':34 'payment':48,75 'per':3,18,36,87,143 'platform':6,21,39,98 'premium':60,163 'price':122,140,194 'prompt':204 'protocol':44 'quot':127 'rate':125,150 'render':199 'report':107 'request':37,144 'request/response':189 'requir':156 'respons':66 'return':64,215 'schema':187 'sentiment':114 'settl':89 'specif':54,159 'summar':117 'text':116 'token':126 'treat':218 'unit':82 'usd':86 'usdc':15,30,47,84 'usdc api' 'usdc-base-network' 'use':41 'util':132 'valid':134 'via':10,25 'wallet':203 'web3':121 'without':209 'x402':11,26,43,68 'x402 api' 'x402-payment'","prices":[{"id":"4bcc43d5-97b8-4066-b78a-6224901d8570","listingId":"8eea4502-b978-4fa7-a9b2-066b2e248fe2","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/wire/165","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:49.575Z"}],"sources":[{"listingId":"8eea4502-b978-4fa7-a9b2-066b2e248fe2","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/165","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:49.575Z","lastSeenAt":"2026-04-22T19:32:28.995Z"}],"details":{"listingId":"8eea4502-b978-4fa7-a9b2-066b2e248fe2","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/165 \\\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 x402 challenge confirms the endpoint is live, accepting up to 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network.","source_url":"https://lowpaymentfee.com/api/v1/wire/165"},{"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":"Platform advertises categories: Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure.","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a paid API endpoint without requiring API key registration","Agent-driven workflows that need to pay per call using USDC on Base","Testing x402 protocol integrations against a live endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that settle API calls in USDC on Base","Low-friction, keyless API consumption"],"notFor":["Users who need documented request/response schemas before calling","Production workloads requiring SLA guarantees or detailed documentation","Free-tier or fiat-only payment workflows"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:31.092Z"},"updatedAt":"2026-04-22T19:32:28.995Z"}}