{"id":"d6bd9ee5-d840-405e-83a2-0b94f3583ba0","shortId":"xNpCu9","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 lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific resource path `/api/v1/wire/85` is one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.\n\nPayment is settled on the Base network using USDC (contract 0x8335…2913) with the x402 \"exact\" scheme. The maximum amount required per call is 20,000 base units, which at 6 decimals equals $0.02 USD. No API keys or rate limits are advertised; callers simply attach an X-PAYMENT header with a valid x402 payment proof. The endpoint accepts HTTP POST requests and returns application/json responses.\n\nThe provider's landing page lists sibling endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and more — all at the same $0.02 price point. However, the specific functionality behind `/api/v1/wire/85` is not documented beyond the generic label \"Premium API Access,\" and the docs, pricing, and README pages all resolve to a minimal \"Connect wallet\" prompt with no further technical detail. Without an OpenAPI spec, request/response schemas, or usage examples, the exact input/output contract for this particular endpoint remains unclear.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","http-post","json-response"],"categories":["api-marketplace","infrastructure"],"synonyms":["lowpaymentfee","x402 api","pay-per-call api","micropayment api","base usdc api","premium api access","wire api"],"warnings":["The specific functionality of /api/v1/wire/85 is undocumented — 'Premium API Access' is a generic label with no further detail.","No OpenAPI spec, request schema, or response schema is available.","All documentation pages (docs, pricing, README, api) resolve to a minimal 'Connect wallet' page with no technical content.","The provider lists many endpoint categories (AI, finance, analytics, etc.) but it is unclear which, if any, map to this specific wire/85 path."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/85","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/85","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 spec, no request/response schema, no documentation beyond a generic label, and no examples. The actual functionality of /api/v1/wire/85 is unknown — it could be any of the advertised services or something else 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'/request':13,28 '0.02':12,27,77,113,175 '000':105 '0x8335':90 '20':104 '2913':91 '6':110 'accept':139 'access':7,22,38,193 'advertis':122 'ai':66 'amount':99 'analysi':157 'analyt':65 'api':6,21,37,116,192 'application/json':145 'attach':125 'base':9,24,85,106 'base usdc api' 'behind':182 'beyond':187 'broad':61 'call':4,19,102 'caller':123 'catalog':62 'classif':160 'connect':206 'contract':89,226 'convers':168 'data':64 'decim':111 'detail':213 'doc':196 'document':186 'embed':161 'endpoint':32,53,138,154,230 'equal':112 'exact':95,224 'exampl':222 'exchang':164 'feed':163 'financ':69 'function':181 'generic':189 'geocod':166 'header':130 'host':59 'howev':178 'http':140 'http-post' 'infrastructur':72 'input/output':225 'json-response' 'key':117 'label':190 'land':150 'learn':68 'limit':120 'list':152 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':67 'mani':52 'maximum':98 'micropayment api' 'minim':205 'network':86 'offer':54 'one':50 'openapi':216 'page':151,200 'particular':229 'path':47 'pay':2,17 'pay-per-cal':1,16 'pay-per-call api' 'pay-per-request' 'payment':42,80,129,135 'per':3,18,78,101 'point':177 'post':141 'premium':5,20,36,191 'premium api access' 'price':75,162,176,197 'prompt':208 'proof':136 'protocol':43 'provid':35,57,148 'rate':119,165 'readm':199 'remain':231 'request':79,142 'request/response':218 'requir':100 'resolv':202 'resourc':46 'respons':146 'return':144 'schema':219 'scheme':96 'sentiment':156 'settl':82 'sibl':153 'simpli':124 'span':63 'spec':217 'specif':45,180 'summar':159 'technic':212 'text':158 'unclear':232 'unit':107 'usag':221 'usd':114 'usdc':15,30,88 'usdc-base-network' 'use':87 'util':73 'valid':133,167 'via':10,25,39 'wallet':207 'web3':70 'wire api' 'without':214 'x':128 'x-payment':127 'x402':11,26,41,94,134 'x402 api' 'x402-payment'","prices":[{"id":"da159d52-d69b-46fb-a8eb-85faa6ce711e","listingId":"d6bd9ee5-d840-405e-83a2-0b94f3583ba0","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/85","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:09.504Z"}],"sources":[{"listingId":"d6bd9ee5-d840-405e-83a2-0b94f3583ba0","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/85","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:09.504Z","lastSeenAt":"2026-04-22T12:04:50.391Z"}],"details":{"listingId":"d6bd9ee5-d840-405e-83a2-0b94f3583ba0","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/85 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with x402Version 1, exact scheme, on Base network, requiring 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).","source_url":"https://lowpaymentfee.com/api/v1/wire/85"},{"claim":"All listed APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The provider offers endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories.","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a pay-per-call API without requiring API keys or subscriptions","Agent-driven workflows that need on-demand API calls settled in USDC on Base","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Developers exploring x402 payment-gated APIs","Agents that can autonomously pay per request via crypto","Users who want no-signup, no-rate-limit API access"],"notFor":["Users who need detailed API documentation or guaranteed SLAs","Anyone requiring non-crypto (fiat) payment methods","Use cases that need to understand the exact request/response schema before calling"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.126Z"},"updatedAt":"2026-04-22T12:04:50.391Z"}}