{"id":"0389a597-2a80-41bb-bd3f-6efdf051a31f","shortId":"DXcJef","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 `/api/v1/wire/187` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. All endpoints are gated via the x402 payment protocol, settling in USDC on the Base network. The platform advertises a flat $0.02 per request with no API keys, no rate limits, and instant access.\n\nThe specific `/api/v1/wire/187` endpoint is labeled \"Premium API Access\" but its exact functionality is not documented beyond that generic title. The x402 challenge confirms it is live, accepts POST requests, and requires up to 20,000 base units of USDC (0.02 USD) per call on Base. The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a 300-second timeout. The response MIME type is `application/json`.\n\nThe broader platform lists endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and data export — all at the same $0.02 price point. However, documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all returned only a \"Connect wallet\" prompt with no substantive content, so there is no schema documentation, request/response examples, or detailed feature descriptions available for any endpoint including this one.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","post-method"],"categories":["api-gateway","infrastructure"],"synonyms":["lowpaymentfee","low payment fee API","x402 premium API","pay-per-call API","USDC API access","Base network API"],"warnings":["The exact functionality of /api/v1/wire/187 is unknown — 'Premium API Access' is a generic label with no further documentation.","All documentation pages (/docs, /pricing, /api, /README) returned no substantive content.","No request or response schema is available; callers cannot know what to send or expect back.","The platform lists many endpoints but none have documented schemas or examples."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/187","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/187","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, but the specific functionality of /api/v1/wire/187 is entirely undocumented. No request/response schemas, no examples, and all documentation pages are empty stubs showing only 'Connect wallet'. The generic 'Premium API Access' label provides no insight into what the endpoint actually 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'/api/v1/wire/187':34,98 '/docs':192 '/pricing':193 '/readme':195 '/request':13,28 '0.02':12,27,83,136,186 '000':131 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':148 '20':130 '300':151 'Base network API' 'USDC API access' 'accept':123 'access':7,22,95,104 'address':147 'advertis':80 'ai/ml':54 'analysi':167 'analyt':53 'api':6,21,50,88,103 'application/json':159 'avail':219 'base':9,24,76,132,141 'base-network' 'beyond':112 'broader':161 'call':4,19,139 'challeng':118 'classif':170 'collect':44 'confirm':119 'connect':200 'content':206 'convers':178 'data':52,58,180 'descript':218 'detail':216 'document':111,190,212 'embed':171 'endpoint':32,63,99,164,222 'exact':107 'exampl':214 'exchang':174 'export':181 'featur':217 'feed':173 'financ':56 'flat':82 'function':108 'gate':65 'generic':114 'geocod':176 'howev':189 'includ':223 'infer':55 'infrastructur':60 'instant':94 'json-response' 'key':89 'label':101 'limit':92 'list':163 'live':122 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':39 'mime':156 'network':77 'offer':42 'one':225 'page':191 'part':36 'pay':2,17,47 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':46 'payment':69,143 'per':3,18,48,84,138 'platform':40,79,162 'point':188 'post':124 'post-method' 'premium':5,20,102 'price':172,187 'prompt':202 'protocol':70 'rate':91,175 'request':49,85,125 'request/response':213 'requir':127 'respons':155 'return':197 'schema':211 'second':152 'sent':145 'sentiment':166 'settl':71 'span':51 'specif':97 'substant':205 'summar':169 'text':168 'timeout':153 'titl':115 'type':157 'unit':133 'usd':137 'usdc':15,30,73,135 'usdc-settlement' 'util':61 'valid':177 'via':10,25,66 'wallet':201 'web3':57 'x402':11,26,68,117 'x402 premium API' 'x402-payment'","prices":[{"id":"4dbe6036-e2d9-464a-9f10-b0b90f5da8ca","listingId":"0389a597-2a80-41bb-bd3f-6efdf051a31f","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/187","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:55.567Z"}],"sources":[{"listingId":"0389a597-2a80-41bb-bd3f-6efdf051a31f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/187","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:55.567Z","lastSeenAt":"2026-04-22T10:02:35.866Z"}],"details":{"listingId":"0389a597-2a80-41bb-bd3f-6efdf051a31f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/187 \\\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 requiring up to 20,000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/187"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) contain only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing premium API services with per-request micropayments in USDC","Agent-driven API consumption without API key management","On-demand data or utility access settled on Base L2"],"bestFor":["Developers wanting keyless, pay-as-you-go API access","AI agents that can settle x402 payments autonomously","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users needing detailed API documentation or schemas before purchasing","High-volume consumers who need bulk pricing or rate guarantees","Anyone who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.862Z"},"updatedAt":"2026-04-22T10:02:35.866Z"}}