{"id":"420978f9-bd08-422e-835a-f1d669eb87bb","shortId":"qEYSmE","kind":"x402","title":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","tagline":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","description":"lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/wire/170` is listed as \"Premium API Access\" and accepts POST requests with payment via the x402 header. The x402 challenge indicates a maximum amount of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request given USDC's 6 decimal places.\n\nThe broader platform advertises multiple API categories including Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at the same $0.02/request price point. The platform emphasizes no API keys, no rate limits, no minimums, and instant access.\n\nHowever, the specific endpoint `/api/v1/wire/170` does not clearly map to any of the named API categories on the landing page, and no documentation, request/response schemas, or usage examples are available. The docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. Without knowing what this particular wire endpoint returns, its practical utility is uncertain.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","post-method","json-response"],"categories":["api-platform","crypto"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","wire endpoint","premium API access"],"warnings":["The specific purpose and functionality of /api/v1/wire/170 is not documented anywhere in the crawled material.","All documentation pages (docs, API, pricing, README) returned only 'Connect wallet' with no substantive content.","No request body schema or response schema is available — callers cannot know what to send or what to expect back.","The endpoint path '/api/v1/wire/170' does not match any of the named APIs listed on the landing page."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/170","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/170","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 request/response schema, no examples, and the specific purpose of /api/v1/wire/170 is unknown. Docs pages returned only 'Connect wallet' with no 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'/request':13,28,151 '0.02':12,27,93,150 '000':82 '0x8335':87 '20':81 '2913':88 '6':99 'Base network API' 'USDC micropayment API' 'accept':46,64 'access':62,167 'advertis':105 'ai':117 'amount':79 'analysi':121 'analyt':111 'api':5,20,38,61,107,158,182,200 'avail':197 'base':8,23,51,83,90 'broader':103 'call':4,19 'categori':108,183 'challeng':75 'classif':124 'clear':175 'connect':209 'content':215 'convers':141 'data':110,114 'decim':100 'doc':199 'document':190 'embed':125 'emphas':156 'endpoint':55,144,171,222 'equal':92 'estim':135 'exampl':195 'exchang':130 'export':115 'feed':129 'financ':126 'gas':134 'generat':142 'geocod':139 'given':96 'header':72 'howev':168 'includ':109 'indic':76 'infrastructur':137 'insight':116 'instant':166 'json-response' 'key':159 'know':217 'land':186 'learn':119 'limit':162 'list':58,146 'lowpaymentfee' 'lowpaymentfee.com':31 'machin':118 'map':176 'maximum':78 'metric':112 'minimum':164 'multipl':106 'name':181 'network':9,24,52 'page':187,204 'particular':220 'pay':2,17,35 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':34 'payment':48,68 'per':3,18,36,94 'place':101 'platform':6,21,39,104,155 'point':153 'post':65 'post-method' 'practic':225 'premium':60 'premium API access' 'price':128,152,201 'prompt':211 'protocol':44 'quot':133 'rate':131,161 'readm':203 'report':113 'request':37,66,95 'request/response':191 'return':206,223 'schema':192 'sentiment':120 'specif':54,170 'substant':214 'summar':123 'text':122 'token':132 'uncertain':228 'unit':84 'usag':194 'usdc':15,30,47,86,97 'usdc-base' 'use':41 'util':138,226 'valid':140 'via':10,25,69 'wallet':210 'web3':127 'wire':221 'wire endpoint' 'without':216 'x402':11,26,43,71,74 'x402 API' 'x402-payment'","prices":[{"id":"d33f1b60-25f8-4dea-b76e-deb9e3869d14","listingId":"420978f9-bd08-422e-835a-f1d669eb87bb","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/170","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:51.917Z"}],"sources":[{"listingId":"420978f9-bd08-422e-835a-f1d669eb87bb","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/170","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:51.917Z","lastSeenAt":"2026-04-22T19:32:29.071Z"}],"details":{"listingId":"420978f9-bd08-422e-835a-f1d669eb87bb","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/170 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/wire/170"},{"claim":"USDC contract address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/170"},{"claim":"Platform lists all endpoints at $0.02/request with no API keys, no rate limits, instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, API, pricing, and README pages contain only 'Connect wallet' with no documentation","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to a paid API endpoint without API key registration","Agent-driven workflows that settle per-call payments in USDC on Base","Testing x402 protocol integrations with a low-cost endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need keyless, pay-per-use API access on Base","Low-cost per-request API consumption without subscriptions"],"notFor":["Users who need detailed API documentation or schemas before integrating","High-volume use cases where per-request pricing may add up without volume discounts","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.982Z"},"updatedAt":"2026-04-22T19:32:29.071Z"}}