{"id":"a131ea76-77a3-4552-839e-5da135d1832a","shortId":"2kTZwQ","kind":"x402","title":"x402-gated EHR endpoint on Base, pay $0.02 per request in USDC — no API keys required.","tagline":"x402-gated EHR endpoint on Base, pay $0.02 per request in USDC — no API keys required.","description":"This endpoint at `/api/v1/ehr/35` 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, and utility services. The specific `/ehr/35` path suggests an Electronic Health Record (EHR) resource, though the provider's landing page does not list this particular endpoint among its documented APIs. The endpoint is live and returns a valid x402 challenge on POST requests.\n\nPayment is settled on the Base network using USDC (contract `0x8335…2913`) via the x402 \"exact\" scheme. The maximum amount required is 20,000 base units, which at 6 decimals equals $0.02 per request — consistent with the platform's uniform $0.02/request pricing. No API keys, rate limits, or upfront commitments are advertised; callers simply attach an `X-PAYMENT` header with a valid payment proof.\n\nDocumentation is extremely sparse. The `/docs`, `/pricing`, `/api`, and `/README` pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema, and no description of what data the `/ehr/35` endpoint actually returns. The endpoint's purpose (EHR data) falls in a regulated domain (healthcare), which warrants caution. Without documentation of the input format or output schema, callers will need to experiment or contact the provider directly.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-settlement","base-network","ehr-data","no-api-key","http-post"],"categories":["health","data"],"synonyms":["electronic health record","EHR API","health data API","medical records endpoint","x402 health API","lowpaymentfee EHR","pay-per-call health data"],"warnings":["The /ehr/35 endpoint is not listed among the provider's documented APIs on the landing page — its purpose and data content are unknown.","EHR (Electronic Health Record) data is a regulated healthcare domain; no compliance or data-source information is provided.","All documentation pages (/docs, /pricing, /api, /README) render only a 'Connect wallet' prompt with no substantive content.","No request body schema or response schema is available; callers must experiment blind."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ehr/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/ehr/35","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 there is zero documentation on what /ehr/35 actually returns, no OpenAPI spec, no request/response examples, and the endpoint is not even listed on the provider's own landing page. The regulated healthcare domain adds further 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'/api/v1/ehr/35':38 '/docs':178 '/ehr/35':69,210 '/pricing':179 '/readme':182 '/request':148 '0.02':9,26,138,147 '000':130 '0x8335':117 '20':129 '2913':118 '6':135 'EHR API' 'actual':212 'advertis':159 'ai/ml':61 'among':90 'amount':126 'analyt':60 'api':15,32,57,93,151 'attach':162 'base':7,24,112,131 'base-network' 'caller':160,238 'caution':228 'challeng':103 'collect':48 'commit':157 'connect':188 'consist':141 'contact':244 'content':194 'contract':116 'data':59,208,219 'decim':136 'descript':205 'direct':247 'document':92,173,230 'domain':224 'ehr':4,21,76,218 'ehr-data' 'electron':73 'electronic health record' 'endpoint':5,22,36,89,95,211,215 'equal':137 'exact':122 'experi':242 'extrem':175 'fall':220 'financ':63 'format':234 'gate':3,20 'header':167 'health':74 'health data API' 'healthcar':225 'http-post' 'infer':62 'input':233 'key':16,33,152 'land':82 'limit':154 'list':86 'live':97 'lowpaymentfee EHR' 'lowpaymentfee.com':43 'maximum':125 'medical records endpoint' 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'x402-protocol':50","prices":[{"id":"8232402c-66ad-4647-8fdf-ba61e46cf61a","listingId":"a131ea76-77a3-4552-839e-5da135d1832a","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/35","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:10.024Z"}],"sources":[{"listingId":"a131ea76-77a3-4552-839e-5da135d1832a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ehr/35","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:10.024Z","lastSeenAt":"2026-04-22T16:32:32.909Z"}],"details":{"listingId":"a131ea76-77a3-4552-839e-5da135d1832a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ehr/35 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The platform advertises $0.02/request uniform pricing with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge specifies maxAmountRequired of 20000 base units in USDC (6 decimals) on Base, equaling $0.02.","source_url":"https://lowpaymentfee.com/api/v1/ehr/35"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/ehr/35"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) show only a 'Connect wallet' prompt.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving electronic health record data for a specific resource (ID 35)","Integrating health data into agent workflows with per-request micropayments","Accessing EHR information without managing API keys or subscriptions"],"bestFor":["Developers needing on-demand EHR data access via crypto micropayments","AI agents that can settle x402 payments on Base","Projects that want keyless, pay-as-you-go health data endpoints"],"notFor":["Production healthcare applications requiring HIPAA-compliant, documented APIs","Users who need detailed request/response schemas before integration","Callers who cannot settle USDC payments on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:22.734Z"},"updatedAt":"2026-04-22T16:32:32.909Z"}}