{"id":"9e48a06e-e4a2-401e-94ed-f23d8ffe594f","shortId":"NyCJBN","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 lowpaymentfee.com provides premium API access at the path `/api/v1/ehr/49`. It is part of a broader platform offering dozens of x402-gated endpoints spanning data analytics, AI/ML inference, finance, crypto, and utility services — all priced at $0.02 per request, settled in USDC on the Base network.\n\nThe specific `/api/v1/ehr/49` path suggests an Electronic Health Record (EHR) resource, though the platform's crawled landing page does not list this particular endpoint among its advertised categories. The x402 challenge confirms the endpoint is live: it returns a 402 with an `exact` payment scheme requiring up to 20,000 base units of USDC (0x8335…) on Base, which equals $0.02 (USDC uses 6 decimals). Payment is made via the `X-PAYMENT` header with no API key or account registration needed.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all returned 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/49` endpoint actually returns. Prospective callers should be aware that the nature of the response payload is unknown and that EHR data may be subject to healthcare data regulations (e.g., HIPAA in the US).","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-request-pricing","no-api-key","ehr-data","http-post"],"categories":["health","data"],"synonyms":["electronic health record","EHR API","health data endpoint","medical records API","x402 health","lowpaymentfee","pay-per-call EHR"],"warnings":["The /api/v1/ehr/49 endpoint is not listed among the provider's advertised APIs — its purpose and response format are unknown.","All documentation pages (docs, API, pricing, README) returned only 'Connect wallet' with no content.","EHR (Electronic Health Record) data may be subject to healthcare privacy regulations such as HIPAA; callers should verify compliance.","No request or response schema is available; the payload structure must be discovered experimentally."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ehr/49","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/49","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what the EHR endpoint accepts or returns. No OpenAPI spec, no examples, and the docs pages are empty. The endpoint path is not even listed on the provider's own landing page. This is effectively a stub 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'/ehr/49':202 '0.02':9,26,74,143 '000':133 '0x8335':138 '20':132 '402':123 '6':146 'EHR API' 'access':42 'account':162 'actual':204 'advertis':110 'ai/ml':64 'among':108 'analyt':63 'api':15,32,41,159,171 'awar':210 'base':7,24,82,134,140 'base-network' 'broader':52 'caller':207 'categori':111 'challeng':114 'confirm':115 'connect':180 'content':186 'crawl':99 'crypto':67 'data':62,200,223,229 'decim':147 'descript':197 'doc':170 'document':165 'dozen':55 'e.g':231 'ehr':4,21,93,222 'ehr-data' 'electron':90 'electronic health record' 'endpoint':5,22,36,60,107,117,203 'equal':142 'exact':126 'extrem':167 'financ':66 'gate':3,20,59 'header':156 'health':91 'health data endpoint' 'healthcar':228 'hipaa':232 'http-post' 'infer':65 'key':16,33,160 'land':100 'list':104 'live':119 'lowpaymentfee' 'lowpaymentfee.com':38 'made':150 'may':224 'medical records API' 'natur':213 'need':164 'network':83 'no-api-key' 'offer':54 'openapi':190 'page':101,175 'part':49 'particular':106 'path':45,87 'pay':8,25 'pay-per-call EHR' 'payload':217 'payment':127,148,155 'per':10,27,75 'per-request-pricing' 'platform':53,97 'premium':40 'price':72,172 'prompt':182 'prospect':206 'provid':39 'readm':174 'record':92 'registr':163 'regul':230 'request':11,28,76 'request/response':193 'requir':17,34,129 'resourc':94 'respons':216 'return':121,177,205 'schema':194 'scheme':128 'servic':70 'settl':77 'span':61 'spars':168 'spec':191 'specif':85 'subject':226 'substant':185 'suggest':88 'though':95 'unit':135 'unknown':219 'us':235 'usdc':13,30,79,137,144 'usdc-settlement' 'use':145 'util':69 'via':151 'wallet':181 'x':154 'x-payment':153 'x402':2,19,58,113 'x402 health' 'x402-gated':1,18,57 'x402-payment'","prices":[{"id":"4606b412-a399-4e71-9d0f-6061e408970f","listingId":"9e48a06e-e4a2-401e-94ed-f23d8ffe594f","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/49","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:09.867Z"}],"sources":[{"listingId":"9e48a06e-e4a2-401e-94ed-f23d8ffe594f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ehr/49","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:09.867Z","lastSeenAt":"2026-04-22T18:32:56.532Z"}],"details":{"listingId":"9e48a06e-e4a2-401e-94ed-f23d8ffe594f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ehr/49 \\\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 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/ehr/49"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/ehr/49"},{"claim":"Platform advertises $0.02 per request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, API, pricing, and README pages returned only 'Connect wallet' with no substantive documentation","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving electronic health record data for a specific resource (ID 49)","Integrating EHR data into agent workflows with per-call crypto micropayments","Accessing health data without managing API keys or subscriptions"],"bestFor":["Developers or agents needing on-demand EHR data with no signup","x402-compatible agents that can settle USDC on Base","Prototyping health-data integrations with minimal commitment"],"notFor":["Production healthcare systems requiring HIPAA-compliant, audited data pipelines","Users who need detailed documentation or guaranteed SLAs","Bulk or high-volume EHR data retrieval (no documented batch support)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:22.962Z"},"updatedAt":"2026-04-22T18:32:56.532Z"}}