{"id":"9ed1695d-688f-47fd-8080-2b70f43303c2","shortId":"VKD6up","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific resource `/api/v1/wire/149` is one of many endpoints offered by the platform, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain using USDC (contract `0x8335...2913` on Base) with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The payment scheme is \"exact,\" meaning the caller pays a fixed amount per call. The timeout is 300 seconds.\n\nWhile the platform advertises a broad suite of APIs (sentiment analysis, text summarization, embeddings, price feeds, geocoding, etc.), the specific functionality behind `/api/v1/wire/149` is not documented beyond the generic label \"Premium API Access.\" No OpenAPI schema, request/response examples, or detailed documentation were found — the docs, pricing, and API pages all resolve to a minimal \"Connect wallet\" prompt. Prospective users should test the endpoint to determine its actual behavior before relying on it in production.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","post-method","no-api-key","no-rate-limit"],"categories":["api-marketplace","infrastructure"],"synonyms":["lowpaymentfee","low payment fee API","x402 premium API","pay-per-call API","USDC API access","Base network API","micropayment API"],"warnings":["The specific functionality of /api/v1/wire/149 is undocumented — 'Premium API Access' is a generic label with no detail on what the endpoint actually returns.","All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no usable content.","No OpenAPI spec, request schema, or response schema is available.","The platform lists many endpoint categories (AI, finance, analytics, etc.) but it is unclear which, if any, of those map to this specific wire/149 resource."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/149","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/149","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 documentation, no OpenAPI schema, no request/response examples, and the actual functionality behind /api/v1/wire/149 is completely opaque. The docs pages all resolve to a wallet-connect prompt with no 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'0.02':12,28,81,135 '000':131 '0x8335':121 '20':130 '2913':122 '300':158 '6':139 'Base network API' 'USDC API access' 'accept':109 'access':7,23,40,192 'actual':226 'advertis':163 'ai':65 'amount':128,152 'analysi':170 'analyt':64 'api':6,22,39,93,168,191,207 'base':9,25,89,124,132 'behavior':227 'behind':181 'beyond':186 'broad':165 'call':4,20,154 'caller':148 'categori':61 'chain':117 'challeng':102 'commit':98 'confirm':103 'connect':214 'contract':120 'data':63 'decim':140 'detail':199 'determin':224 'doc':204 'document':185,200 'embed':173 'endpoint':34,54,74,105,222 'etc':177 'exact':145 'exampl':197 'feed':175 'financ':68 'fix':151 'found':202 'function':180 'generic':188 'geocod':176 'given':136 'i.e':134 'includ':62 'infrastructur':71 'key':94 'label':189 'learn':67 'limit':96 'live':107 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':36 'machin':66 'mani':53 'maximum':127 'mean':146 'micropayment API' 'minim':213 'network':90 'no-api-key' 'no-rate-limit' 'offer':55 'on-chain':115 'one':51 'openapi':194 'page':208 'paid':84 'pay':2,18,149 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request' 'payment':44,112,142 'per':3,13,19,29,82,153 'platform':58,77,162 'post':110 'post-method' 'premium':5,21,38,190 'price':79,174,205 'product':233 'prompt':216 'prospect':217 'protocol':45 'provid':37 'rate':95 'reli':229 'request':14,30,83,111 'request/response':196 'requir':99 'resolv':210 'resourc':48 'schema':195 'scheme':143 'second':159 'sentiment':169 'settl':114 'span':60 'specif':47,179 'suit':166 'summar':172 'test':220 'text':171 'timeout':156 'unit':133 'usdc':16,32,86,119,137 'usdc-base' 'use':118 'user':218 'util':72 'via':10,26,41 'wallet':215 'web3':69 'x402':11,27,43,101 'x402 premium API' 'x402-payment'","prices":[{"id":"389335e7-a74d-459f-90c6-5de68d03ece2","listingId":"9ed1695d-688f-47fd-8080-2b70f43303c2","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/149","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:46.558Z"}],"sources":[{"listingId":"9ed1695d-688f-47fd-8080-2b70f43303c2","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/149","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:46.558Z","lastSeenAt":"2026-04-22T13:31:59.609Z"}],"details":{"listingId":"9ed1695d-688f-47fd-8080-2b70f43303c2","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/149 \\\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":"All endpoints priced at $0.02 per request with no API keys, rate limits, or commitments","source_url":"https://lowpaymentfee.com"},{"claim":"Platform offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/wire/149"},{"claim":"Payment asset is USDC at contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/149"}],"useCases":["Programmatic access to premium API functionality with per-request crypto payments","Agent-driven workflows that need keyless, on-demand API calls settled in USDC","Testing x402 payment protocol integrations on Base"],"bestFor":["Developers wanting zero-commitment, pay-as-you-go API access","AI agents that can settle x402 payments autonomously","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before purchasing","Anyone without a Base-compatible USDC wallet","High-volume use cases where $0.02/request adds up significantly"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:31.232Z"},"updatedAt":"2026-04-22T13:31:59.609Z"}}