{"id":"0a43e84f-b4f0-445c-9405-9c17834a1c16","shortId":"eEbPQN","kind":"x402","title":"x402-gated premium API endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated premium API endpoint on Base, pay-per-request with USDC.","description":"This endpoint at `/api/resource/46` is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. The specific resource behind `/api/resource/46` is labeled \"Premium API Access\" but its exact functionality is not documented — the site lists many endpoints under versioned paths (e.g., `/api/v1/analytics/metrics`, `/api/v2/ai/sentiment`) but `/api/resource/46` does not appear among them. It may be a generic or numbered resource slot.\n\nPayment is handled via the x402 protocol on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required per request is 20,000 units in the token's smallest denomination. The platform advertises a flat $0.02 per request across its listed APIs, with no API keys, no rate limits, and no minimum commitments. The endpoint accepts HTTP POST and returns `application/json`.\n\nBecause the crawled documentation pages (`/docs`, `/api`, `/pricing`, `/README`) all returned only a \"Connect wallet\" prompt with no substantive content, there is no schema documentation, request/response examples, or detailed description of what this particular resource returns. Prospective users should treat this as an opaque paid endpoint until further documentation is available.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","http-post","json-response"],"categories":["general","api-gateway"],"synonyms":["lowpaymentfee","x402 api","pay-per-call api","USDC micropayment api","base network api","premium api access"],"warnings":["The endpoint path /api/resource/46 does not appear in the site's listed API catalog — its purpose is unclear.","All documentation pages (/docs, /api, /pricing, /README) returned no meaningful content, only a 'Connect wallet' prompt.","No request body schema or response schema is documented; callers cannot know what to send or what to expect.","The platform lists many endpoints at $0.02 each but the maxAmountRequired of 20000 raw units may not correspond to $0.02 depending on token decimals (USDC has 6 decimals, so 20000 = $0.02)."],"endpointUrl":"https://lowpaymentfee.com/api/resource/46","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/resource/46","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 payment terms are clear, but the specific resource `/api/resource/46` is undocumented. All doc pages returned only 'Connect wallet' with no content. No request/response schema, no examples, and the endpoint's actual functionality is 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'page':173 'paid':213 'part':34 'particular':202 'path':87 'pay':10,24,48 'pay-per-call api' 'pay-per-request':9,23,47 'payment':107 'per':11,25,49,126,144 'platform':38,139 'post':165 'premium':4,18,70 'premium api access' 'prompt':184 'prospect':205 'protocol':46,113 'rate':155 'request':12,26,50,127,145 'request/response':194 'requir':125 'resourc':65,105,203 'return':167,179,204 'schema':192 'site':81 'slot':106 'smallest':136 'span':52 'specif':64 'substant':187 'token':134 'treat':208 'unit':131 'usdc':14,28,119 'usdc-base' 'use':118 'user':206 'util':62 'version':86 'via':110 'wallet':183 'web3':58 'x402':2,16,45,112 'x402 api' 'x402-gated':1,15 'x402-payment' 'x402-protocol':44","prices":[{"id":"53864ce2-7a99-4640-900e-64b045788d34","listingId":"0a43e84f-b4f0-445c-9405-9c17834a1c16","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/resource/46","description":"Premium API 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resource.","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 on POST with USDC on Base network","source_url":"https://lowpaymentfee.com/api/resource/46"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/resource/46"},{"claim":"Listed API categories include Data & Analytics, AI & ML, Finance & Web3, and Infrastructure","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a paid API resource without API key management","Agent-driven pay-per-request workflows using x402 and USDC on Base","Exploring x402-protocol payment flows for micro-transactions"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can autonomously pay for API calls via on-chain USDC","Users who want keyless, pay-as-you-go API access"],"notFor":["Users who need detailed API documentation or guaranteed SLAs","Anyone requiring free or high-volume bulk access without per-request cost"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T08:31:38.24Z"},"updatedAt":"2026-04-22T16:30:19.446Z"}}