{"id":"6a18fe64-fc8d-41d5-9865-08f0c23fd526","shortId":"gMKwYq","kind":"x402","title":"Pay-per-call lab results endpoint on Base via x402, settling in USDC at $0.02/request.","tagline":"Pay-per-call lab results endpoint on Base via x402, settling in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" to lab results (resource ID 35) via the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum cost of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals).\n\nThe broader lowpaymentfee.com platform advertises a suite of pay-per-call APIs spanning data & analytics, AI/ML (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation) — all priced at $0.02 per request. The platform emphasizes no API keys, no rate limits, and instant access.\n\nThe specific endpoint `/api/v1/lab/results/35` is not explicitly listed on the site's landing page among the advertised API categories, so its exact response schema and purpose are unclear. The x402 challenge confirms it is live and accepting payment-gated POST requests. No OpenAPI spec, detailed documentation, or example responses were found in the crawl.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-call","json-response","post-method"],"categories":["data","api-infrastructure"],"synonyms":["lab results API","premium API access","x402 paid endpoint","USDC micropayment API","lowpaymentfee","pay-per-request API","Base network API"],"warnings":["Endpoint /api/v1/lab/results/35 is not listed among the provider's advertised APIs on the landing page — its purpose is unclear.","No OpenAPI spec, request schema, or response schema available.","No documentation pages rendered meaningful content (pricing, README, and /api pages only show 'Connect wallet').","The exact nature of 'lab results' data is unspecified — could be placeholder or test content."],"endpointUrl":"https://lowpaymentfee.com/api/v1/lab/results/35","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/lab/results/35","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and confirms pricing and network details, but there is no OpenAPI spec, no documentation, no example request/response, and the specific endpoint (/api/v1/lab/results/35) is not listed among the site's advertised APIs. The purpose and schema of the response are 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<x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns maxAmountRequired of 20,000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/lab/results/35"},{"claim":"USDC contract address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/lab/results/35"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Platform lists APIs across data & analytics, AI/ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching lab result data (ID 35) via a single paid POST request","Demonstrating x402 payment-gated API consumption for agents","Integrating low-cost per-call data retrieval into automated workflows"],"bestFor":["Agents or developers needing pay-per-call data access without API keys","Testing x402 protocol integrations on Base with USDC","Low-volume, on-demand data retrieval at $0.02 per call"],"notFor":["High-volume bulk data retrieval where per-call pricing adds up","Users who need detailed documentation or guaranteed SLAs before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:04.519Z"},"updatedAt":"2026-04-23T05:02:13.654Z"}}