{"id":"56fdec3f-72df-4b38-a4bb-5a25cfd0c4de","shortId":"PmCCy7","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/62` does not map clearly to any of the named API categories listed on the provider's landing page (Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructure), and no documentation or schema is available to clarify what this particular wire endpoint returns. The provider's site lists many endpoints across analytics, AI inference, finance, and utility categories, all priced at $0.02 per request.\n\nThe endpoint is live and returns a valid x402 challenge. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The x402 scheme is \"exact\", meaning each call requires a one-time micropayment. No API keys, rate limits, or subscriptions are required — callers simply attach an X-PAYMENT header with a valid payment proof.\n\nDocumentation is extremely sparse. The /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no explanation of what `/api/v1/wire/62` specifically does. Prospective callers should be aware that the actual functionality behind this endpoint is unclear from available materials.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","pay-per-request","no-api-key"],"categories":["api-gateway","infrastructure"],"synonyms":["lowpaymentfee","x402 api","micropayment api","pay-per-call api","USDC api access","base network api"],"warnings":["The specific functionality of /api/v1/wire/62 is undocumented and unclear","No OpenAPI spec, request schema, or response schema is available","All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content","Cannot verify what data or service this endpoint actually provides"],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/62","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/62","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI spec, no request/response schema, and the specific purpose of /api/v1/wire/62 is unknown. The docs pages are empty beyond a wallet-connect prompt. This is effectively a stub 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'/api/v1/wire/62':48,220 '/docs':190 '/pricing':191 '/readme':194 '/request':13,28 '0.02':12,27,108,144 '000':139 '0x8335':131 '20':138 '2913':132 '6':147 'USDC api access' 'access':7,22,38 'across':97 'actual':230 'ai':69,99 'amount':136 'analyt':68,98 'api':6,21,37,58,164 'attach':174 'avail':81,238 'awar':227 'base':9,24,126,140 'base network api' 'base-network' 'behind':232 'call':4,19,156 'caller':172,224 'categori':59,104 'challeng':120 'clarifi':83 'clear':52 'connect':200 'content':206 'contract':130 'data':67 'decim':148 'document':77,185 'endpoint':32,88,96,112,234 'equal':143 'exact':153 'explan':217 'extrem':187 'financ':72,101 'function':231 'header':179 'infer':100 'infrastructur':74 'key':165 'land':65 'learn':71 'limit':167 'list':60,94 'live':114 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':70 'mani':95 'map':51 'materi':239 'maximum':135 'mean':154 'micropay':162 'micropayment api' 'name':57 'network':127 'no-api-key' 'one':160 'one-tim':159 'openapi':210 'page':66,195 'particular':86 'path':47 'pay':2,17 'pay-per-cal':1,16 'pay-per-call api' 'pay-per-request' 'payment':42,121,178,183 'per':3,18,109 'premium':5,20,36 'price':106 'prompt':202 'proof':184 'prospect':223 'protocol':43 'provid':35,63,91 'rate':166 'render':197 'request':110 'request/response':213 'requir':157,171 'resourc':46 'return':89,116 'schema':79,214 'scheme':151 'settl':123 'simpli':173 'site':93 'spars':188 'spec':211 'specif':45,221 'subscript':169 'time':161 'unclear':236 'unit':141 'usdc':15,30,129,145 'usdc-micropayment' 'use':128,146 'util':103 'valid':118,182 'via':10,25,39 'wallet':201 'web3':73 'wire':87 'x':177 'x-payment':176 'x402':11,26,41,119,150 'x402 api' 'x402-payment'","prices":[{"id":"77c4ed7c-3d38-4771-9e27-aa774dc824a0","listingId":"56fdec3f-72df-4b38-a4bb-5a25cfd0c4de","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/62","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:11.353Z"}],"sources":[{"listingId":"56fdec3f-72df-4b38-a4bb-5a25cfd0c4de","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/62","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:11.353Z","lastSeenAt":"2026-04-22T09:01:53.251Z"}],"details":{"listingId":"56fdec3f-72df-4b38-a4bb-5a25cfd0c4de","quickStartSnippet":"# Endpoint requires an x402 payment header (USDC on Base, $0.02/call)\ncurl -X POST https://lowpaymentfee.com/api/v1/wire/62 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <your-x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/62"},{"claim":"The provider lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories, all at $0.02/request","source_url":"https://lowpaymentfee.com"},{"claim":"The site advertises no API keys, no rate limits, instant access, and Base network settlement","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a premium API endpoint with per-call USDC micropayments","Agent-driven workflows that need keyless, pay-as-you-go API consumption","Testing x402 payment protocol integrations on Base"],"bestFor":["Developers experimenting with x402 micropayment protocols","AI agents that can settle USDC payments on Base per request","Users who want no-subscription, no-API-key access"],"notFor":["Users who need clear documentation or defined response schemas before integrating","High-volume consumers who prefer flat-rate or subscription pricing"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.004Z"},"updatedAt":"2026-04-22T09:01:53.251Z"}}