{"id":"a999691a-1bb6-4895-9b98-c102881aa0cb","shortId":"G4gR2b","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/8` is part of the lowpaymentfee.com platform, which offers a variety of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance, and infrastructure utilities. The specific `/ehr/8` path suggests an Electronic Health Record (EHR) resource, though the provider's landing page does not document this particular endpoint in its public catalog — it lists analytics, AI, finance, and utility endpoints but not EHR routes. The endpoint is live and returns a valid x402 challenge.\n\nPayment is settled on the Base network using USDC (contract `0x8335…2913`) via the \"exact\" scheme. The `maxAmountRequired` is 20,000 base units, which at 6 decimals equals $0.02 per request — consistent with the provider's advertised flat $0.02/request pricing across all endpoints. The x402 flow means no API keys or accounts are needed: callers attach an `X-PAYMENT` header with a signed payment proof and receive the response directly.\n\nBecause the `/api/v1/ehr/8` path is not listed on the provider's public catalog and the crawled docs/pricing/README pages all render only a \"Connect wallet\" stub with no additional documentation, the actual response schema and data content of this endpoint are unknown. It may return health-record-related JSON, but this is inferred solely from the URL path. Treat with caution, especially given potential regulatory implications of health data.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-settlement","base-network","no-api-key","ehr-data"],"categories":["health","data"],"synonyms":["electronic health record API","EHR endpoint","health data API","x402 health","pay-per-call EHR","lowpaymentfee EHR","USDC health API"],"warnings":["The /api/v1/ehr/8 endpoint is NOT listed in the provider's public API catalog — its purpose and response format are unknown.","EHR (Electronic Health Record) data may be subject to HIPAA or equivalent health-data regulations; no compliance information is provided.","All documentation pages (/docs, /pricing, /README, /api) render only a 'Connect wallet' stub with no usable content.","No request body schema or response schema is documented anywhere."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ehr/8","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/8","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but the /ehr/8 path is not documented anywhere on the provider's site. No request/response schema, no docs beyond a wallet-connect stub, and the EHR designation is inferred purely from the URL. Potential health-data regulatory concerns add 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'/ehr/8':69 '/request':155 '0.02':9,26,144,154 '000':136 '0x8335':126 '20':135 '2913':127 '6':141 'EHR endpoint' 'USDC health API' 'account':168 'across':157 'actual':218 'addit':215 'advertis':152 'ai':97 'ai/ml':61 'analyt':60,96 'api':15,32,57,165 'attach':172 'base':7,24,121,137 'base-network' 'caller':171 'catalog':93,200 'caution':248 'challeng':115 'connect':210 'consist':147 'content':223 'contract':125 'crawl':203 'data':59,222,256 'decim':142 'direct':187 'docs/pricing/readme':204 'document':86,216 'ehr':4,21,76,104 'ehr-data' 'electron':73 'electronic health record API' 'endpoint':5,22,36,89,101,107,159,226 'equal':143 'especi':249 'exact':130 'financ':63,98 'flat':153 'flow':162 'gate':3,20 'given':250 'header':177 'health':74,233,255 'health data API' 'health-record-rel':232 'implic':253 'infer':62,240 'infrastructur':65 'json':236 'key':16,33,166 'land':82 'list':95,194 'live':109 'lowpaymentfee EHR' 'lowpaymentfee.com':43 'maxamountrequir':133 'may':230 'mean':163 'need':170 'network':122 'no-api-key' 'offer':46 'page':83,205 'part':40 'particular':88 'path':70,191,245 'pay':8,25,54 'pay-per-call EHR' 'pay-per-request':53 'payment':116,176,181 'per':10,27,55,145 'platform':44 'potenti':251 'price':156 'proof':182 'protocol':52 'provid':80,150,197 'public':92,199 'receiv':184 'record':75,234 'regulatori':252 'relat':235 'render':207 'request':11,28,56,146 'requir':17,34 'resourc':77 'respons':186,219 'return':111,231 'rout':105 'schema':220 'scheme':131 'settl':118 'sign':180 'sole':241 'span':58 'specif':68 'stub':212 'suggest':71 'though':78 'treat':246 'unit':138 'unknown':228 'url':244 'usdc':13,30,124 'usdc-settlement' 'use':123 'util':66,100 'valid':113 'varieti':48 'via':128 'wallet':211 'x':175 'x-payment':174 'x402':2,19,51,114,161 'x402 health' 'x402-gated':1,18 'x402-payment' 'x402-protocol':50","prices":[{"id":"d99e2ab0-c92e-4f66-8fa7-5428fa5ef0b8","listingId":"a999691a-1bb6-4895-9b98-c102881aa0cb","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/8","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:10.324Z"}],"sources":[{"listingId":"a999691a-1bb6-4895-9b98-c102881aa0cb","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ehr/8","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:10.324Z","lastSeenAt":"2026-04-22T15:02:41.018Z"}],"details":{"listingId":"a999691a-1bb6-4895-9b98-c102881aa0cb","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ehr/8 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <signed-x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The provider advertises $0.02/request flat pricing with no API keys, no rate limits, and settlement on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge returns maxAmountRequired of 20000 base units in USDC (6 decimals) = $0.02, on the Base network.","source_url":"https://lowpaymentfee.com/api/v1/ehr/8"},{"claim":"The /api/v1/ehr/8 path is not listed among the provider's publicly cataloged endpoints.","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving electronic health record data on a per-request payment basis","Integrating EHR lookups into agent workflows without managing API keys","Paying for health data access with USDC on Base L2"],"bestFor":["Agents needing on-demand EHR data without subscription commitments","Developers experimenting with x402 pay-per-call health data access","Crypto-native applications that settle in USDC on Base"],"notFor":["Production healthcare applications requiring HIPAA-compliant, audited data pipelines","Users who need detailed API documentation and guaranteed SLAs before integrating","Bulk EHR data retrieval where per-request pricing would be cost-prohibitive"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:22.39Z"},"updatedAt":"2026-04-22T15:02:41.018Z"}}