{"id":"ee8bccea-dbcd-4dde-bc7b-f6b41b30e4f4","shortId":"XSYhfB","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/item/8` is part of the lowpaymentfee.com platform, which offers a suite of pay-per-request APIs settled via the x402 protocol on the Base network using USDC. The platform advertises categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. Each request costs $0.02 (20,000 base units of USDC with 6 decimals), with no API keys, no rate limits, and no minimum commitments required.\n\nThe specific endpoint `/api/v1/item/8` is labeled \"Premium API Access\" but its exact functionality is not documented beyond that generic title. It accepts POST requests and returns `application/json`. The x402 challenge confirms the endpoint is live, requesting payment of up to 20,000 USDC base units (~$0.02) to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The platform's landing page lists 16 different API endpoints across four categories, all priced identically at $0.02 per call, but `/api/v1/item/8` does not directly correspond to any of the named endpoints on the homepage.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content. Without further documentation or example responses, the actual data returned by this endpoint remains unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","no-api-key"],"categories":["api","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access","crypto-paid API"],"warnings":["The exact functionality of /api/v1/item/8 is unknown — it does not correspond to any named endpoint on the provider's homepage","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no usable content","No OpenAPI spec, no request/response examples, and no schema beyond the x402 challenge metadata"],"endpointUrl":"https://lowpaymentfee.com/api/v1/item/8","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/item/8","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but the specific functionality of /api/v1/item/8 is undocumented. No OpenAPI schema, no example requests/responses, and all documentation pages are blank beyond a wallet-connect prompt. The endpoint title 'Premium API Access' is generic and does not map to any named service on the 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'/request':13,28 '0.02':12,27,80,147,170 '000':82,143 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':150 '16':159 '20':81,142 '6':88 'Base network API' 'USDC micropayment API' 'accept':123 'access':7,22,110 'across':163 'actual':217 'addit':208 'address':149 'advertis':64 'ai':69 'analyt':68 'api':6,21,50,92,109,161,194 'application/json':128 'base':9,24,58,83,145,152 'base-network' 'beyond':118 'call':4,19,172 'categori':65,165 'challeng':131 'commit':100 'confirm':132 'connect':203 'content':209 'correspond':178 'cost':79 'crypto-paid API' 'data':67,218 'decim':89 'differ':160 'direct':177 'doc':193 'document':117,188,212 'endpoint':32,104,134,162,184,222 'exact':113 'exampl':214 'extrem':190 'financ':72 'four':164 'function':114 'generic':120 'homepag':187 'ident':168 'includ':66 'infrastructur':75 'json-response' 'key':93 'label':107 'land':156 'learn':71 'limit':96 'list':158 'live':136 'lowpaymentfee' 'lowpaymentfee.com':39 'machin':70 'minimum':99 'name':183 'network':59 'no-api-key' 'offer':42 'page':157,198 'part':36 'pay':2,17,47 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':46 'payment':138 'per':3,18,48,171 'platform':40,63,154 'post':124 'premium':5,20,108 'premium API access' 'price':167,195 'prompt':205 'protocol':55 'rate':95 'readm':197 'remain':223 'render':200 'request':49,78,125,137 'requir':101 'respons':215 'return':127,219 'settl':51 'spars':191 'specif':103 'suit':44 'titl':121 'unit':84,146 'unknown':224 'usdc':15,30,61,86,144 'usdc-settlement' 'use':60 'util':76 'via':10,25,52 'wallet':204 'web3':73 'without':210 'x402':11,26,54,130 'x402 API' 'x402-payment'","prices":[{"id":"58c37754-c3df-4efc-b4db-c09e9174f41c","listingId":"ee8bccea-dbcd-4dde-bc7b-f6b41b30e4f4","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/item/8","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:33:42.931Z"}],"sources":[{"listingId":"ee8bccea-dbcd-4dde-bc7b-f6b41b30e4f4","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/item/8","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:33:42.931Z","lastSeenAt":"2026-04-23T02:00:24.240Z"}],"details":{"listingId":"ee8bccea-dbcd-4dde-bc7b-f6b41b30e4f4","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/item/8 \\\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 platform lists 16 API endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories, 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, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge confirms the endpoint is live, accepting POST, with maxAmountRequired of 20000 USDC base units on Base","source_url":"https://lowpaymentfee.com/api/v1/item/8"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/item/8"}],"useCases":["Accessing premium data or services with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Integrating pay-as-you-go endpoints into automated workflows"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users needing detailed API documentation or guaranteed SLAs","Applications requiring free or subscription-based access","Users without access to USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T18:31:32.843Z"},"updatedAt":"2026-04-23T02:00:24.240Z"}}