{"id":"823db366-4353-4f23-84d3-fda9598f0d89","shortId":"aUaPVj","kind":"x402","title":"x402-gated EHR endpoint on Base, pay $0.02 per request in USDC with no API keys.","tagline":"x402-gated EHR endpoint on Base, pay $0.02 per request in USDC with no API keys.","description":"This endpoint at lowpaymentfee.com provides premium API access to an Electronic Health Record (EHR) resource at `/api/v1/ehr/91`. It is part of a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all gated via the x402 payment protocol on the Base network. Each request costs $0.02 in USDC (USD Coin), settled on-chain with no API keys, rate limits, or upfront commitments required.\n\nThe specific `/api/v1/ehr/91` endpoint is not documented on the provider's landing page alongside the other listed APIs, so its exact input/output schema and the nature of the EHR data it returns are unclear. The x402 challenge confirms it is live and accepts POST requests, paying to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` in USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02.\n\nBecause the endpoint path references \"ehr\" (commonly an abbreviation for Electronic Health Records), callers should be aware this may involve health-related data, which could be subject to regulatory requirements (e.g., HIPAA in the US). No documentation, schema, or example responses are available for this specific endpoint, so its actual data content and compliance posture are unknown.","tags":[],"capabilities":["x402-payment","per-call-pricing","usdc-settlement","base-network","ehr-data","post-method","no-api-key"],"categories":["health","data"],"synonyms":["electronic health record API","EHR endpoint","health data API","x402 EHR","pay-per-call health API","lowpaymentfee EHR","Base USDC API"],"warnings":["The /api/v1/ehr/91 endpoint is not listed on the provider's landing page among documented APIs — its data content is unknown.","EHR (Electronic Health Record) data may be subject to health data regulations (e.g., HIPAA). No compliance or privacy documentation is provided.","No input schema, output schema, or example responses are available for this endpoint.","Docs, pricing, API, and README pages all render only a 'Connect wallet' prompt with no substantive content."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ehr/91","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/91","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 USDC on Base), but the specific /api/v1/ehr/91 endpoint has no documentation, no input/output schema, no example responses, and is not listed among the provider's advertised APIs. The EHR designation raises regulatory concerns with zero compliance information 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'0.02':9,26,91,181 '000':172 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':158 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':161 '20':171 '6':177 'Base USDC API' 'EHR endpoint' 'abbrevi':190 'accept':152 'access':42 'actual':232 'address':157 'ai/ml':70 'alongsid':123 'amount':166 'analyt':69 'api':16,33,41,66,102,127 'avail':225 'awar':198 'base':7,24,86,163,173 'base-network' 'broader':57 'call':65,169 'caller':195 'chain':99 'challeng':146 'coin':95 'commit':108 'common':188 'complianc':236 'confirm':147 'content':234 'cost':90 'could':207 'crypto':73 'data':68,139,205,233 'decim':178 'document':116,219 'dozen':60 'e.g':213 'ehr':4,21,48,138,187 'ehr-data' 'electron':45,192 'electronic health record API' 'endpoint':5,22,36,113,184,229 'equal':180 'exact':130 'exampl':222 'financ':72 'gate':3,20,78 'health':46,193,203 'health data API' 'health-rel':202 'hipaa':214 'infer':71 'input/output':131 'involv':201 'key':17,34,103 'land':121 'limit':105 'list':126 'live':150 'lowpaymentfee EHR' 'lowpaymentfee.com':38 'maximum':165 'may':200 'natur':135 'network':87 'no-api-key' 'offer':59 'on-chain':97 'page':122 'part':54 'path':185 'pay':8,25,63,155 'pay-per-cal':62 'pay-per-call health API' 'payment':82 'per':10,27,64,168 'per-call-pricing' 'platform':58 'post':153 'post-method' 'postur':237 'premium':40 'protocol':83 'provid':39,119 'rate':104 'record':47,194 'refer':186 'regulatori':211 'relat':204 'request':11,28,89,154 'requir':109,167,212 'resourc':49 'respons':223 'return':141 'schema':132,220 'servic':76 'settl':96 'span':67 'specif':111,228 'subject':209 'unclear':143 'unit':174 'unknown':239 'upfront':107 'us':217 'usd':94 'usdc':13,30,93,160,176 'usdc-settlement' 'util':75 'via':79 'x402':2,19,81,145 'x402 EHR' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"abba3e99-eb27-489a-b640-17747a48ae36","listingId":"823db366-4353-4f23-84d3-fda9598f0d89","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/91","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:10.405Z"}],"sources":[{"listingId":"823db366-4353-4f23-84d3-fda9598f0d89","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ehr/91","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:10.405Z","lastSeenAt":"2026-04-22T15:02:41.184Z"}],"details":{"listingId":"823db366-4353-4f23-84d3-fda9598f0d89","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ehr/91 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","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/91"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/ehr/91"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base","source_url":"https://lowpaymentfee.com"},{"claim":"The /api/v1/ehr/91 endpoint is not listed among the provider's advertised APIs on the landing page","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving electronic health record data for a specific resource (ID 91)","Integrating health data into agent workflows with micropayment settlement","Programmatic access to EHR information without API key management"],"bestFor":["Agents needing on-demand EHR data with crypto micropayments","Developers exploring x402-gated health data endpoints","Workflows requiring keyless, pay-per-call API access on Base"],"notFor":["Production healthcare applications requiring documented compliance (HIPAA, etc.)","Use cases needing bulk or batch EHR data retrieval at scale","Callers who need detailed schema documentation before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:22.263Z"},"updatedAt":"2026-04-22T15:02:41.184Z"}}