{"id":"dc65d0ab-f67f-422d-8c05-2cbf3815b6bb","shortId":"VrLwgp","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 site hosts a broad catalog of pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities — all priced at $0.02 per request, settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/wire/8` is listed as \"Premium API Access\" and accepts POST requests. The x402 challenge confirms it is live, requiring up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02) per call. Payment is made via the x402 exact scheme with no API keys, no rate limits, and no subscriptions — just a per-call USDC micropayment.\n\nHowever, the crawled documentation pages (docs, api, pricing, README) all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what `/api/v1/wire/8` specifically returns. The site's landing page groups endpoints into categories but does not map `/api/v1/wire/8` to any of them. Without documentation it is unclear what data or functionality this particular endpoint provides beyond the generic label \"Premium API Access.\"","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","pay-per-request","no-api-key","post-endpoint"],"categories":["api","infrastructure"],"synonyms":["x402 api","micropayment api","pay per call api","usdc api access","base network api","lowpaymentfee","premium api"],"warnings":["No documentation available — docs, pricing, and README pages all return only 'Connect wallet' with no content.","The specific function of /api/v1/wire/8 ('Premium API Access') is not described anywhere; it does not appear in the site's listed API catalog.","No OpenAPI schema, request format, or response examples are provided.","Cannot verify what data or service this endpoint actually delivers."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/8","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/8","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 zero documentation on what this endpoint actually does, no request/response schema, and the docs/pricing/README pages are all empty wallet-connect stubs. The listing is essentially a 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'/request':13,28 '0.02':12,27,70,116 '000':105 '0x8335':110 '20':104 '2913':111 '6':114 'accept':91 'access':7,22,38,89,218 'ai/ml':59 'analyt':58 'api':6,21,37,55,88,129,150,217 'base':9,24,78,106,113 'base network api' 'base-network' 'beyond':212 'broad':48 'call':4,19,118,141 'catalog':49 'categori':189 'challeng':96 'confirm':97 'connect':157 'content':163 'crawl':146 'data':57,63,205 'decim':115 'descript':175 'detail':174 'doc':149 'document':147,200 'endpoint':32,82,187,210 'exact':125 'exampl':171 'financ':61 'function':207 'generic':214 'group':186 'host':46 'howev':144 'infer':60 'infrastructur':65 'key':130 'label':215 'land':184 'limit':133 'list':85 'live':100 'lowpaymentfee' 'lowpaymentfee.com':34 'made':121 'map':193 'micropay':143 'micropayment api' 'network':79 'no-api-key' 'openapi':167 'page':148,185 'particular':209 'pay':2,17,52 'pay per call api' 'pay-per-cal':1,16 'pay-per-request':51 'payment':42,119 'per':3,18,53,71,117,140 'per-cal':139 'post':92 'post-endpoint' 'premium':5,20,36,87,216 'premium api' 'price':68,151 'prompt':159 'protocol':43 'provid':35,211 'rate':132 'readm':152 'request':54,72,93 'request/response':170 'requir':101 'return':154,180 'schema':168 'scheme':126 'settl':73 'site':45,182 'span':56 'specif':81,179 'subscript':136 'substant':162 'unclear':203 'unit':107 'usdc':15,30,75,109,142 'usdc api access' 'usdc-micropayment' 'util':66 'via':10,25,39,122 'wallet':158 'web3':62 'without':199 'x402':11,26,41,95,124 'x402 api' 'x402-payment'","prices":[{"id":"b8185a89-de61-41f4-a6e7-c5b811745da4","listingId":"dc65d0ab-f67f-422d-8c05-2cbf3815b6bb","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/8","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":"dc65d0ab-f67f-422d-8c05-2cbf3815b6bb","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/8","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:13.121Z","lastSeenAt":"2026-04-22T04:02:16.566Z"}],"details":{"listingId":"dc65d0ab-f67f-422d-8c05-2cbf3815b6bb","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/8 \\\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 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/8"},{"claim":"All listed APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/wire/8"}],"useCases":["Accessing a pay-per-call API without subscriptions or API keys","Making USDC micropayments on Base for on-demand API responses","Agent-driven programmatic access to premium endpoints via x402"],"bestFor":["Developers wanting zero-commitment, per-request API billing","AI agents that can settle x402 micropayments autonomously","Users who prefer crypto-native payment rails over traditional billing"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integrating","High-volume consumers who need bulk pricing or rate-limit guarantees","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:29.959Z"},"updatedAt":"2026-04-22T04:02:16.566Z"}}