{"id":"def6ef5d-67f3-4301-a738-f67b017f3634","shortId":"pWbvRA","kind":"x402","title":"Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific endpoint `/api/v1/wire/168` is one of many endpoints offered by the platform, which spans categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities.\n\nThe platform operates on a simple pay-per-request model with no API keys, no rate limits, and no commitments required. Payment is settled on the Base network using USDC (USD Coin) at a cost of $0.02 per request (20,000 base units with 6 decimals). The x402 challenge confirms the endpoint is live and accepts POST requests with JSON responses.\n\nWhile the platform advertises a broad range of endpoints (metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation), the specific functionality behind `/api/v1/wire/168` labeled \"Premium API Access\" is not clearly documented. No OpenAPI schema, detailed input/output documentation, or usage examples are available from the crawled pages. The docs, API, pricing, and README pages all appear to require wallet connection to view content.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-settlement","base-network","json-response","no-api-key","no-rate-limit"],"categories":["api-marketplace","infrastructure"],"synonyms":["pay per call API","x402 endpoint","USDC API payment","Base network API","micropayment API","lowpaymentfee","crypto API access"],"warnings":["The specific functionality of /api/v1/wire/168 is undocumented — 'Premium API Access' is a generic label","All documentation pages require wallet connection and returned no useful content","No OpenAPI spec, no input schema, no response examples available","Cannot verify what data or service is actually returned upon successful payment"],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/168","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/168","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what this specific endpoint does, no input/output schema, and no examples. The 'Premium API Access' label is generic and 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'/request':16,34 '0.02':15,33,114 '000':118 '20':117 '6':122 'Base network API' 'USDC API payment' 'accept':133 'access':7,25,44,173 'advertis':142 'ai':69 'analysi':151 'analyt':68 'api':6,24,43,90,172,195 'appear':201 'avail':188 'base':9,27,104,119 'base-network' 'behind':168 'broad':144 'call':4,22 'categori':65 'challeng':126 'classif':154 'clear':176 'coin':109 'commit':97 'confirm':127 'connect':205 'content':208 'convers':162 'cost':112 'crawl':191 'crypto API access' 'data':67 'decim':123 'detail':181 'doc':194 'document':177,183 'embed':155 'endpoint':38,52,58,129,147 'exampl':186 'exchang':158 'feed':157 'financ':72 'function':167 'generat':164 'geocod':160 'includ':66 'infrastructur':75 'input/output':182 'json':137 'json-response' 'key':91 'label':170 'learn':71 'limit':94 'live':131 'lowpaymentfee' 'lowpaymentfee.com':40 'machin':70 'mani':57 'metric':148 'micropayment API' 'model':87 'network':10,28,105 'no-api-key' 'no-rate-limit' 'offer':59 'one':55 'openapi':179 'oper':79 'page':192,199 'pay':2,20,84 'pay per call API' 'pay-per-cal':1,19 'pay-per-request':83 'payment':48,99 'per':3,21,85,115 'platform':62,78,141 'post':134 'premium':5,23,42,171 'price':156,196 'protocol':13,31,49 'provid':41 'rang':145 'rate':93,159 'readm':198 'report':149 'request':86,116,135 'requir':98,203 'respons':138 'schema':180 'sentiment':150 'settl':101 'simpl':82 'span':64 'specif':51,166 'summar':153 'text':152 'unit':120 'usag':185 'usd':108 'usdc':18,36,107 'usdc-settlement' 'use':106 'util':76 'valid':161 'via':11,29,45 'view':207 'wallet':204 'web3':73 'x402':12,30,47,125 'x402 endpoint' 'x402-payment'","prices":[{"id":"07c387f7-cc5a-49cf-9037-cc4cfcfbe4c6","listingId":"def6ef5d-67f3-4301-a738-f67b017f3634","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/168","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:51.322Z"}],"sources":[{"listingId":"def6ef5d-67f3-4301-a738-f67b017f3634","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/168","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:51.322Z","lastSeenAt":"2026-04-22T13:31:59.867Z"}],"details":{"listingId":"def6ef5d-67f3-4301-a738-f67b017f3634","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/168 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Platform charges $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge confirms endpoint is live, accepts POST, requires 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/168"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/wire/168"}],"useCases":["Accessing premium API services without traditional API key registration","Making one-off API calls with instant crypto micropayments","Integrating pay-per-use endpoints into agent workflows without subscriptions"],"bestFor":["Developers who want instant API access without signup","Agents that need to pay per call with USDC on Base","Projects requiring low-cost per-request pricing without commitments"],"notFor":["Users who need detailed documentation before integrating","High-volume use cases where subscription pricing would be cheaper","Developers without access to USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.997Z"},"updatedAt":"2026-04-22T13:31:59.867Z"}}