{"id":"a5e33431-71ba-4440-b73a-5e8917d3fd26","shortId":"BYcQ7G","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 `/api/v1/wire/71` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are gated via the x402 protocol, requiring a USDC payment on the Base network for each call. The specific endpoint `/api/v1/wire/71` is labeled \"Premium API Access\" but its exact functionality is not documented beyond that title.\n\nThe platform advertises a flat $0.02 per request across all its APIs, with no API keys, no rate limits, and no minimum commitments required. The x402 challenge confirms the endpoint is live and accepts payment in USDC (contract `0x8335...2913` on Base) with a `maxAmountRequired` of 20000 base units, which equals $0.02 (USDC uses 6 decimals). Payment is settled on-chain to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a 300-second timeout.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI spec, no request/response schema, and no description of what `/api/v1/wire/71` actually returns. The landing page lists other endpoints (analytics, AI, finance, utilities) but does not mention `/wire/71` specifically. Without documentation, callers cannot know what request body to send or what response to expect.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","no-api-key","http-post"],"categories":["api-gateway","misc"],"synonyms":["lowpaymentfee","low payment fee API","x402 API","pay per call API","USDC API access","Base network API","micropayment API"],"warnings":["The exact functionality of /api/v1/wire/71 is undocumented — 'Premium API Access' is the only description available.","No OpenAPI spec, request schema, or response schema is provided anywhere on the site.","All documentation pages (docs, API, pricing, README) render only a 'Connect wallet' prompt with no useful content.","The endpoint /api/v1/wire/71 is not listed among the APIs shown on the landing page, making its purpose unclear."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/71","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/71","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, confirming pricing and payment details. However, there is no documentation, no OpenAPI spec, no request/response schema, and the specific purpose of /api/v1/wire/71 is unknown. The docs pages are empty beyond a wallet-connect prompt. This is effectively a stub 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'/wire/71':224 '0.02':12,28,107,153 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':166 '0x8335':140 '20000':148 '2913':141 '300':169 '6':156 'Base network API' 'USDC API access' 'accept':135 'access':7,23,91 'across':110 'actual':208 'addit':192 'address':165 'advertis':104 'ai':56,217 'analyt':55,216 'api':6,22,52,90,113,116,178 'base':9,25,78,143,149 'beyond':99 'bodi':233 'call':4,20,82 'caller':228 'cannot':229 'chain':163 'challeng':128 'collect':46 'commit':124 'confirm':129 'connect':187 'content':193 'contract':139 'data':54 'decim':157 'descript':204 'doc':177 'document':98,172,227 'endpoint':34,65,85,131,215 'equal':152 'exact':94 'expect':240 'extrem':174 'financ':59,218 'flat':106 'function':95 'gate':67 'http-post' 'infrastructur':62 'key':117 'know':230 'label':88 'land':211 'learn':58 'limit':120 'list':213 'live':133 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':41 'machin':57 'maxamountrequir':146 'mention':223 'micropayment API' 'minimum':123 'network':79 'no-api-key' 'offer':44 'on-chain':161 'openapi':197 'page':182,212 'part':38 'pay':2,18,49 'pay per call API' 'pay-per-cal':1,17 'pay-per-request':48 'payment':75,136,158 'per':3,13,19,29,50,108 'platform':42,103 'premium':5,21,89 'price':179 'prompt':189 'protocol':71 'rate':119 'readm':181 'render':184 'request':14,30,51,109,232 'request/response':200 'requir':72,125 'respons':238 'return':209 'schema':201 'second':170 'send':235 'settl':160 'span':53 'spars':175 'spec':198 'specif':84,225 'timeout':171 'titl':101 'unit':150 'usdc':16,32,74,138,154 'usdc-base' 'use':155 'util':63,219 'via':10,26,68 'wallet':188 'web3':60 'without':226 'x402':11,27,70,127 'x402 API' 'x402-payment'","prices":[{"id":"056173f0-bed6-4011-aafd-3328f2b3a954","listingId":"a5e33431-71ba-4440-b73a-5e8917d3fd26","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/71","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:13.121Z"}],"sources":[{"listingId":"a5e33431-71ba-4440-b73a-5e8917d3fd26","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/71","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:13.121Z","lastSeenAt":"2026-04-22T05:31:51.065Z"}],"details":{"listingId":"a5e33431-71ba-4440-b73a-5e8917d3fd26","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/71 \\\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 platform charges $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 x402 challenge shows maxAmountRequired of 20000 base units in USDC on Base with a 300-second timeout.","source_url":"https://lowpaymentfee.com/api/v1/wire/71"},{"claim":"The asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is USD Coin (USDC) on Base.","source_url":"https://lowpaymentfee.com/api/v1/wire/71"},{"claim":"Documentation pages render only a 'Connect wallet' prompt with no additional content.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing premium data or services with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Exploring x402 protocol-based pay-per-use endpoints"],"bestFor":["Developers experimenting with x402 payment-gated APIs","Agents that can settle USDC payments on Base automatically","Users who want keyless, commitment-free API access"],"notFor":["Anyone needing documented request/response schemas before integrating","High-volume use cases where per-request on-chain payments add latency or cost","Users without a Base-compatible wallet or USDC balance"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:29.896Z"},"updatedAt":"2026-04-22T05:31:51.065Z"}}