{"id":"f1737343-9c48-49f2-9c1c-5371bdd2199f","shortId":"ns9ULX","kind":"x402","title":"Pay-per-call EHR API endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call EHR API endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This endpoint at `/api/v1/ehr/40` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs accessible via the x402 payment protocol on the Base network. Payment is made in USDC (USD Coin) with no API keys, no rate limits, and no subscriptions required — each call costs $0.02 (20,000 base units of USDC with 6 decimals). The x402 challenge is live and returns a standard 402 response with payment details.\n\nThe specific endpoint `/api/v1/ehr/40` is labeled \"Premium API Access\" but the path strongly suggests it relates to Electronic Health Records (EHR). However, no documentation, schema, or example responses are available for this endpoint — the docs, pricing, and README pages all resolve to a minimal \"Connect wallet\" prompt with no further detail. The broader lowpaymentfee.com site lists categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities, but this particular EHR endpoint is not listed among them.\n\nWithout request/response schemas or documentation, the exact data returned by this endpoint is unknown. Callers should be aware that the EHR path may involve health-related data, which could carry regulatory implications (e.g., HIPAA). The endpoint accepts POST requests and returns `application/json`.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","ehr-data","json-api","no-api-key"],"categories":["health","data"],"synonyms":["electronic health records","EHR API","health data API","medical records API","x402 API","pay-per-call API","lowpaymentfee"],"warnings":["No documentation or schema available for this endpoint — functionality is entirely unknown beyond the URL path hint","EHR (Electronic Health Records) data may be subject to healthcare regulations such as HIPAA; compliance status is unknown","This endpoint is not listed among the provider's advertised APIs on the homepage","Docs, pricing, and README pages all return only a 'Connect wallet' prompt with no useful content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/ehr/40","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/ehr/40","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02/request in USDC on Base). However, there is no documentation, no request/response schema, no examples, and the endpoint is not even listed on the provider's own homepage. The EHR designation is inferred solely from the URL path. This is effectively a stub 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'part':40 'particular':180 'path':121,209 'pay':2,19,51 'pay-per-cal':1,18 'pay-per-call API' 'pay-per-request':50 'payment':59,65,108 'per':3,20,52 'platform':44 'post':226 'premium':116 'price':145 'prompt':156 'protocol':60 'rate':77 'readm':147 'record':129 'regulatori':219 'relat':125,214 'request':53,227 'request/response':189 'requir':82 'resolv':150 'respons':106,137 'return':102,196,229 'schema':134,190 'settl':12,29 'site':164 'specif':111 'standard':104 'strong':122 'subscript':81 'suggest':123 'unit':90 'unknown':201 'usd':70 'usdc':14,31,69,92 'usdc-settlement' 'util':177 'via':10,27,56 'wallet':155 'web3':174 'without':188 'x402':11,28,58,97 'x402 API' 'x402-payment'","prices":[{"id":"346f9062-ed67-41e0-9855-b919f66492ad","listingId":"f1737343-9c48-49f2-9c1c-5371bdd2199f","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/ehr/40","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:09.909Z"}],"sources":[{"listingId":"f1737343-9c48-49f2-9c1c-5371bdd2199f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ehr/40","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:09.909Z","lastSeenAt":"2026-04-22T18:32:56.620Z"}],"details":{"listingId":"f1737343-9c48-49f2-9c1c-5371bdd2199f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ehr/40 \\\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 endpoint returns a live x402 402 challenge with USDC on Base network, maxAmountRequired of 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/ehr/40"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base uses 6 decimals, so 20000 base units = $0.02","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving electronic health record data on a per-request basis","Integrating EHR data into agent workflows without subscription overhead","Accessing health-related data with crypto micropayments"],"bestFor":["Developers needing on-demand EHR data access without API key management","Agent-based systems that can settle payments via x402 on Base","Low-volume or sporadic health data lookups where subscriptions are wasteful"],"notFor":["Production healthcare applications requiring HIPAA-compliant, audited data pipelines","High-volume bulk EHR data retrieval where per-request pricing is inefficient","Users who need detailed documentation or guaranteed SLAs before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:22.863Z"},"updatedAt":"2026-04-22T18:32:56.620Z"}}