{"id":"b6e6840c-30ed-4213-bd26-fb22b20a8a9f","shortId":"9DW2BV","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/186` is not explicitly listed on the provider's landing page among their named API categories, so its exact functionality is unclear. However, the provider operates a broad suite of pay-per-call APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation).\n\nThe endpoint is live and returns a valid x402 challenge. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with the \"exact\" scheme. The maximum amount required is 20,000 base units, which at 6 decimals equals $0.02 per request — consistent with the provider's advertised flat pricing of $0.02/request across all endpoints. The provider advertises no API keys, no rate limits, and instant access.\n\nDocumentation is extremely sparse. The /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available. The specific purpose of the `/api/v1/wire/186` path cannot be determined from the available material. Agents should treat this as an opaque premium endpoint until better documentation surfaces.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-call","no-api-key","http-post"],"categories":["api-gateway","infrastructure"],"synonyms":["x402 API","pay-per-request API","USDC micropayment API","Base network API","lowpaymentfee","wire API","crypto-paid API"],"warnings":["The specific endpoint /api/v1/wire/186 is not listed among the provider's named APIs — its purpose is unknown.","All documentation pages (/docs, /api, /pricing, /README) return only a 'Connect wallet' prompt with no usable content.","No request or response schema is available; callers cannot know what to send or what to expect back.","No OpenAPI or ai-plugin manifest found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/186","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/186","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 with clear pricing, but the specific functionality of /api/v1/wire/186 is undocumented. No OpenAPI spec, no request/response schemas, no examples, and all documentation pages are empty beyond a wallet-connect prompt. This is effectively a stub 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'/api/v1/wire/186':48,220 '/docs':184 '/pricing':186 '/readme':188 '/request':13,28,163 '0.02':12,27,150,162 '000':142 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':131 '20':141 '6':147 'Base network API' 'USDC micropayment API' 'access':7,22,38,178 'across':164 'advertis':158,169 'agent':229 'ai':86 'among':59 'amount':138 'analysi':90 'analyt':85 'api':6,21,37,62,82,171 'avail':214,227 'base':9,24,126,143 'better':239 'broad':75 'call':4,19,81 'cannot':222 'categori':63 'challeng':120 'classif':92 'connect':194 'consist':153 'content':200 'contract':130 'convers':109 'crypto-paid API' 'data':84 'decim':148 'determin':224 'document':179,209,240 'embed':93 'endpoint':32,112,166,237 'equal':149 'estim':103 'exact':66,134 'exampl':213 'exchang':98 'explicit':51 'extrem':181 'feed':97 'financ':94 'flat':159 'function':67 'gas':102 'generat':110 'geocod':107 'howev':70 'http-post' 'infrastructur':105 'instant':177 'key':172 'land':57 'learn':88 'limit':175 'list':52 'live':114 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':87 'materi':228 'maximum':137 'name':61 'network':127 'no-api-key' 'opaqu':235 'openapi':204 'oper':73 'page':58,189 'path':47,221 'pay':2,17,79 'pay-per-cal':1,16,78 'pay-per-call' 'pay-per-request API' 'payment':42,121 'per':3,18,80,151 'premium':5,20,36,236 'price':96,160 'prompt':196 'protocol':43 'provid':35,55,72,156,168 'purpos':217 'quot':101 'rate':99,174 'render':191 'request':152 'request/response':207 'requir':139 'resourc':46 'return':116 'schema':208 'scheme':135 'sentiment':89 'settl':123 'span':83 'spars':182 'spec':205 'specif':45,216 'suit':76 'summar':91 'surfac':241 'token':100 'treat':231 'unclear':69 'unit':144 'usag':212 'usdc':15,30,129 'usdc-base-network' 'use':128 'util':106 'valid':108,118 'via':10,25,39 'wallet':195 'web3':95 'wire API' 'x402':11,26,41,119 'x402 API' 'x402-payment'","prices":[{"id":"a8500e1b-0012-4a91-90f9-f33afdf7231e","listingId":"b6e6840c-30ed-4213-bd26-fb22b20a8a9f","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/186","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:53.699Z"}],"sources":[{"listingId":"b6e6840c-30ed-4213-bd26-fb22b20a8a9f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/186","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:53.699Z","lastSeenAt":"2026-04-22T10:02:35.795Z"}],"details":{"listingId":"b6e6840c-30ed-4213-bd26-fb22b20a8a9f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/186 \\\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 advertises $0.02/request flat pricing with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge specifies maxAmountRequired of 20000 base units of USDC (6 decimals) on Base, equaling $0.02.","source_url":"https://lowpaymentfee.com/api/v1/wire/186"},{"claim":"The provider lists API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure.","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a premium API endpoint with per-call USDC micropayments","Agent-driven workflows needing keyless, pay-as-you-go API access on Base","Integrating x402-compatible payment flows into automated pipelines"],"bestFor":["Developers or agents already set up with x402 payment on Base","Use cases requiring no-signup, no-API-key access","Low-volume, pay-per-call consumption patterns"],"notFor":["Users who need detailed API documentation or response schemas before integrating","High-volume consumers who need bulk pricing or rate-limit guarantees","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.879Z"},"updatedAt":"2026-04-22T10:02:35.795Z"}}