{"id":"06bb7b82-defa-4bf4-83c9-24d10071a99f","shortId":"wxXVAn","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at `/api/v1/wire/41` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. All endpoints are gated via the x402 protocol, settling payments in USDC on the Base network. The listed price is $0.02 per request (20,000 base units of USDC with 6 decimals), with no API keys, rate limits, or minimum commitments required.\n\nThe specific `/api/v1/wire/41` endpoint is labeled \"Premium API Access\" but its exact functionality is not documented beyond that title. The site's landing page lists numerous sibling endpoints covering sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and data export — all at the same $0.02 price point. However, the wire/41 path does not appear in the public catalog, so its precise purpose is unclear. The endpoint is confirmed live, returning a valid x402 402 challenge with USDC payment details on Base.\n\nThe platform's documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all render only a \"Connect wallet\" prompt with no substantive content, so there is no schema documentation, request/response examples, or detailed API reference available. Callers should expect to POST JSON and receive JSON back (mimeType is `application/json`), but the exact input parameters and output format are unknown.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-api","no-api-key"],"categories":["api-gateway","infrastructure"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC micropayment API","Base network API","lowpaymentfee"],"warnings":["The /api/v1/wire/41 path is not listed in the site's public API catalog — its specific functionality is unknown.","All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no usable content.","No input or output schema is available; callers must discover the API contract by experimentation.","The endpoint's description 'Premium API Access' is generic and does not describe what the endpoint actually does."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/41","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/41","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, confirming pricing and payment details. However, the specific wire/41 endpoint has no documentation, no schema, no examples, and its purpose is entirely opaque beyond the generic label 'Premium API Access'. All doc pages return only a wallet-connect 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'/api/v1/wire/41':34,106 '/docs':195 '/pricing':196 '/readme':198 '/request':13,28 '0.02':12,27,82,153 '000':86 '20':85 '402':182 '6':92 'Base network API' 'USDC micropayment API' 'access':7,22,112 'ai/ml':54 'analysi':134 'analyt':53 'api':6,21,50,96,111,220 'appear':162 'application/json':235 'avail':222 'back':232 'base':9,24,76,87,189 'beyond':120 'call':4,19 'caller':223 'catalog':166 'challeng':183 'classif':137 'collect':44 'commit':102 'confirm':176 'connect':203 'content':209 'convers':145 'cover':132 'data':52,58,147 'decim':93 'detail':187,219 'document':119,193,215 'embed':138 'endpoint':32,63,107,131,174 'exact':115,238 'exampl':217 'exchang':141 'expect':225 'export':148 'feed':140 'financ':56 'format':243 'function':116 'gate':65 'geocod':143 'howev':156 'infer':55 'infrastructur':60 'input':239 'json':228,231 'json-api' 'key':97 'label':109 'land':126 'limit':99 'list':79,128 'live':177 'lowpaymentfee' 'lowpaymentfee.com':39 'mimetyp':233 'minimum':101 'network':77 'no-api-key' 'numer':129 'offer':42 'output':242 'page':127,194 'paramet':240 'part':36 'path':159 'pay':2,17,47 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':46 'payment':71,186 'per':3,18,48,83 'platform':40,191 'point':155 'post':227 'precis':169 'premium':5,20,110 'premium API' 'price':80,139,154 'prompt':205 'protocol':69 'public':165 'purpos':170 'rate':98,142 'receiv':230 'refer':221 'render':200 'request':49,84 'request/response':216 'requir':103 'return':178 'schema':214 'sentiment':133 'settl':70 'sibl':130 'site':124 'span':51 'specif':105 'substant':208 'summar':136 'text':135 'titl':122 'unclear':172 'unit':88 'unknown':245 'usdc':15,30,73,90,185 'usdc-base' 'util':61 'valid':144,180 'via':10,25,66 'wallet':204 'web3':57 'wire/41':158 'x402':11,26,68,181 'x402 endpoint' 'x402-payment'","prices":[{"id":"f25a193e-3b8c-4ff2-b39e-51218a443a94","listingId":"06bb7b82-defa-4bf4-83c9-24d10071a99f","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/41","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:04.709Z"}],"sources":[{"listingId":"06bb7b82-defa-4bf4-83c9-24d10071a99f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/41","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:04.709Z","lastSeenAt":"2026-04-22T10:32:31.430Z"}],"details":{"listingId":"06bb7b82-defa-4bf4-83c9-24d10071a99f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/41 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 402 challenge with USDC on Base, maxAmountRequired 20000 (=$0.02)","source_url":"https://lowpaymentfee.com/api/v1/wire/41"},{"claim":"The site lists APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categories, all at $0.02/request","source_url":"https://lowpaymentfee.com"},{"claim":"Pricing is $0.02/request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages render only a 'Connect wallet' prompt with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing premium API functionality with per-request USDC micropayments","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to backend services on Base"],"bestFor":["Developers wanting zero-signup, pay-per-call API access","AI agents that can settle x402 payments in USDC on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed API documentation before integrating","Anyone requiring non-crypto payment methods","High-volume callers who would benefit from bulk pricing or subscriptions"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.354Z"},"updatedAt":"2026-04-22T10:32:31.430Z"}}