{"id":"d124f5f8-7451-402a-90a0-781aafaac235","shortId":"A9PDbb","kind":"x402","title":"x402-gated EHR endpoint on Base, pay-per-request with USDC — no API keys required.","tagline":"x402-gated EHR endpoint on Base, pay-per-request with USDC — no API keys required.","description":"This endpoint at `/api/v1/ehr/80` is part of the lowpaymentfee.com platform, which offers a collection of x402 protocol-gated APIs spanning data analytics, AI/ML inference, finance, and utility services. The specific endpoint being listed here appears to serve electronic health record (EHR) data, though the provider's landing page does not explicitly document the `/ehr/` path or its response schema. The endpoint is live and returns a valid x402 challenge.\n\nPayment is settled on the Base network using USDC (contract `0x8335…2913`). The x402 challenge advertises a `maxAmountRequired` of 20,000 base units. Since USDC uses 6 decimals, this converts to $0.02 per request — consistent with the provider's stated flat pricing of $0.02/request across all endpoints. The platform advertises no API keys, no rate limits, and instant access.\n\nImportant caveats: the `/api/v1/ehr/80` path is not listed among the provider's documented API categories, and no input/output schema is available beyond the x402 challenge metadata. The crawled documentation pages (`/docs`, `/api`, `/pricing`, `/README`) all returned only a \"Connect wallet\" prompt with no substantive content. The nature of the EHR data (synthetic, aggregated, or real patient data) is unknown, which raises potential regulatory concerns.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","ehr-data","no-api-key","http-post"],"categories":["health","data"],"synonyms":["electronic health record API","EHR endpoint","health data API","medical records API","x402 health API","lowpaymentfee EHR"],"warnings":["The /api/v1/ehr/80 path is not listed among the provider's documented endpoints — it may be undocumented, experimental, or deprecated.","No input or output schema is available; callers cannot know what to send or what to expect back.","EHR (Electronic Health Record) data may be subject to HIPAA or other health-data regulations — the provider gives no compliance information.","All documentation pages (/docs, /api, /pricing, /README) returned only a 'Connect wallet' prompt with no actual content."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ehr/80","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/80","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 the /ehr/80 path is not documented anywhere on the provider's site. No input schema, output schema, or example responses are available. Documentation pages are empty. The nature of the data served is entirely unclear, and the health-data category raises regulatory red 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'/api/v1/ehr/80':38,168 '/docs':195 '/ehr':89 '/pricing':197 '/readme':198 '/request':149 '0.02':136,148 '000':125 '0x8335':115 '20':124 '2913':116 '6':131 'EHR endpoint' 'access':164 'across':150 'advertis':120,155 'aggreg':217 'ai/ml':58 'among':173 'analyt':57 'api':15,32,54,157,178 'appear':70 'avail':185 'base':7,24,110,126 'beyond':186 'categori':179 'caveat':166 'challeng':104,119,189 'collect':48 'concern':228 'connect':203 'consist':139 'content':209 'contract':114 'convert':134 'crawl':192 'data':56,77,215,221 'decim':132 'document':87,177,193 'ehr':4,21,76,214 'ehr-data' 'electron':73 'electronic health record API' 'endpoint':5,22,36,66,96,152 'explicit':86 'financ':60 'flat':145 'gate':3,20,53 'health':74 'health data API' 'http-post' 'import':165 'infer':59 'input/output':182 'instant':163 'key':16,33,158 'land':82 'limit':161 'list':68,172 'live':98 'lowpaymentfee EHR' 'lowpaymentfee.com':43 'maxamountrequir':122 'medical records API' 'metadata':190 'natur':211 'network':111 'no-api-key' 'offer':46 'page':83,194 'part':40 'path':90,169 'patient':220 'pay':9,26 'pay-per-request':8,25 'payment':105 'per':10,27,137 'platform':44,154 'potenti':226 'price':146 'prompt':205 'protocol':52 'protocol-g':51 'provid':80,142,175 'rais':225 'rate':160 'real':219 'record':75 'regulatori':227 'request':11,28,138 'requir':17,34 'respons':93 'return':100,200 'schema':94,183 'serv':72 'servic':63 'settl':107 'sinc':128 'span':55 'specif':65 'state':144 'substant':208 'synthet':216 'though':78 'unit':127 'unknown':223 'usdc':13,30,113,129 'usdc-base' 'use':112,130 'util':62 'valid':102 'wallet':204 'x402':2,19,50,103,118,188 'x402 health API' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"39508147-aed5-495b-8763-a0983c23a582","listingId":"d124f5f8-7451-402a-90a0-781aafaac235","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/80","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:10.427Z"}],"sources":[{"listingId":"d124f5f8-7451-402a-90a0-781aafaac235","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ehr/80","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:10.427Z","lastSeenAt":"2026-04-22T15:02:41.184Z"}],"details":{"listingId":"d124f5f8-7451-402a-90a0-781aafaac235","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ehr/80 \\\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 valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/ehr/80"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/ehr/80"},{"claim":"The /ehr/ path is not listed among the provider's documented API categories on the landing page","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving electronic health record data on a per-request payment basis","Integrating EHR data into agent workflows without managing API keys","Programmatic access to health record information via x402 micropayments"],"bestFor":["Agents needing on-demand EHR data with crypto micropayments","Developers prototyping health data integrations without subscription commitments","x402-compatible clients on the Base network"],"notFor":["Production healthcare applications requiring HIPAA-compliant, documented APIs","Users who need detailed input/output schema documentation before integration","Non-crypto payment workflows (no fiat option available)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:22.237Z"},"updatedAt":"2026-04-22T15:02:41.184Z"}}