{"id":"5283361d-90c4-4b8a-88f1-353040c34f4c","shortId":"6FyUXu","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/126` is not explicitly documented on the provider's landing page, but the site hosts a broad catalog of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is in USDC (contract 0x8335…2913 on Base) with a maxAmountRequired of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each call is paid individually via the X-PAYMENT header. The response MIME type is application/json.\n\nNote that the exact functionality behind `/api/v1/wire/126` is not documented on the crawled pages. The provider's site lists endpoints for metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation — but this specific wire endpoint is not among them. It may be a generic or internal route. Without further documentation, the precise input/output schema is unknown.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","post-method"],"categories":["api","infrastructure"],"synonyms":["lowpaymentfee","x402 api","pay per call api","usdc api","base network api","micropayment api","premium api access"],"warnings":["The specific endpoint /api/v1/wire/126 is not listed among the provider's documented APIs — its exact functionality is unknown.","Documentation pages (/docs, /pricing, /README, /api) returned no meaningful content beyond 'Connect wallet'.","No OpenAPI spec, input schema, or response examples are available.","The description 'Premium API Access' is generic and does not clarify what this endpoint does."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/126","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/126","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 the specific functionality of /api/v1/wire/126 is undocumented. No input/output schema, no examples, and the docs/pricing/README pages all returned only a 'Connect wallet' stub with no useful 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'/request':13,28 '0.02':12,27,86,128 '000':123 '0x8335':114 '20':122 '2913':115 '6':131 'accept':106 'access':7,22,38 'ai':75 'among':207 'analysi':186 'analyt':74 'api':6,21,37,71,136 'application/json':161 'base':9,24,95,117,124 'base network api' 'behind':167 'broad':64 'call':4,19,146 'catalog':65 'challeng':99 'classif':189 'commit':144 'confirm':100 'contract':113 'convers':197 'crawl':174 'data':73 'decim':132 'document':52,171,219 'embed':190 'endpoint':32,102,181,204 'equal':127 'exact':165 'exchang':193 'explicit':51 'feed':192 'financ':78 'function':166 'generat':199 'generic':213 'geocod':195 'header':155 'host':62 'individu':149 'infrastructur':81 'input/output':222 'intern':215 'json-response' 'key':137 'land':57 'learn':77 'limit':140 'list':180 'live':104 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':76 'maxamountrequir':120 'may':210 'metric':183 'micropayment api' 'mime':158 'network':96 'no-api-key' 'note':162 'page':58,175 'paid':148 'path':47 'pay':2,17,68 'pay per call api' 'pay-per-cal':1,16 'pay-per-request':67 'payment':42,109,154 'per':3,18,69,87 'post':107 'post-method' 'precis':221 'premium':5,20,36 'premium api access' 'price':84,191 'protocol':43 'provid':35,55,177 'rate':139,194 'report':184 'request':70,88,108 'resourc':46 'respons':157 'rout':216 'schema':223 'sentiment':185 'settl':90 'site':61,179 'span':72 'specif':45,202 'subscript':143 'summar':188 'text':187 'type':159 'unit':125 'unknown':225 'usdc':15,30,92,112,129 'usdc api' 'usdc-base' 'use':130 'util':82 'valid':196 'via':10,25,39,150 'web3':79 'wire':203 'without':217 'x':153 'x-payment':152 'x402':11,26,41,98 'x402 api' 'x402-payment'","prices":[{"id":"f85c3d11-96e2-4b8c-9723-f57ab544c055","listingId":"5283361d-90c4-4b8a-88f1-353040c34f4c","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/126","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:36.152Z"}],"sources":[{"listingId":"5283361d-90c4-4b8a-88f1-353040c34f4c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/126","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:36.152Z","lastSeenAt":"2026-04-22T05:31:49.542Z"}],"details":{"listingId":"5283361d-90c4-4b8a-88f1-353040c34f4c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/126 \\\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 provider lists APIs across data & analytics, AI & ML, finance & Web3, and infrastructure, all priced at $0.02/request","source_url":"https://lowpaymentfee.com"},{"claim":"Pricing is $0.02 per request with no API keys, no rate limits, instant access, on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units in USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/126"}],"useCases":["Programmatic access to paid API services without subscription or API key management","Agent-driven workflows that need on-demand, per-call payment settlement on Base","Testing x402 payment protocol integrations with a low-cost endpoint"],"bestFor":["Developers exploring x402 pay-per-call patterns","AI agents that need keyless, instant API access","Low-volume or bursty workloads where subscription pricing is wasteful"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","High-volume use cases where per-call pricing at $0.02 may add up quickly","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:31.704Z"},"updatedAt":"2026-04-22T05:31:49.542Z"}}