{"id":"e9fbaa79-48fe-402e-9c73-82c8d4e118b3","shortId":"y3zFDw","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/25` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-call APIs spanning data analytics, AI/ML, finance, infrastructure, and more. The specific `/ehr/25` path suggests an Electronic Health Record (EHR) resource, though the provider's landing page does not list this particular endpoint among its documented offerings. The endpoint is live and returns a valid x402 challenge on POST.\n\nPricing is set at 20,000 base units of USDC on the Base network (contract `0x8335…2913`). Since USDC uses 6 decimals, this translates to $0.02 per request — consistent with the platform's uniform $0.02/request pricing across all listed endpoints. Payment is made via the x402 exact scheme; no API keys, subscriptions, or rate limits are advertised. The x402 challenge specifies a 300-second payment timeout.\n\nDocumentation is extremely sparse. The landing page lists endpoint categories (Data & Analytics, AI & ML, Finance & Web3, Infrastructure) but does not describe the `/ehr/25` endpoint specifically. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI spec, no request/response schema documentation, and no examples for this or any other endpoint on the platform. The actual data returned by this endpoint and the expected POST body are unknown.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","ehr-data","http-post"],"categories":["health","data"],"synonyms":["electronic health record","EHR API","medical records API","health data endpoint","x402 EHR","lowpaymentfee EHR","pay-per-call health API"],"warnings":["The /api/v1/ehr/25 endpoint is not listed among the provider's documented APIs — its purpose and data format are unknown.","No OpenAPI spec, request schema, or response schema is available for any endpoint on this platform.","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content.","EHR data may be subject to healthcare regulations (e.g., HIPAA); no compliance information is provided.","The nature of the data behind 'ehr/25' is entirely opaque — it could be synthetic, demo, or real health data."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ehr/25","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/25","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 for the /ehr/25 path specifically. No request/response schema, no examples, and the docs pages are empty. The endpoint is not even listed on the provider's landing page. This is effectively a stub 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'/ehr/25':66,192 '/request':138 '0.02':128,137 '000':108 '0x8335':118 '20':107 '2913':119 '300':166 '6':123 'EHR API' 'across':140 'actual':235 'addit':211 'advertis':160 'ai':182 'ai/ml':59 'among':87 'analyt':58,181 'api':15,32,55,153,197 'base':7,24,109,115 'bodi':245 'call':54 'categori':179 'challeng':100,163 'collect':46 'connect':206 'consist':131 'content':212 'contract':117 'data':57,180,236 'decim':124 'describ':190 'doc':196 'document':89,170,221 'ehr':4,21,73 'ehr-data' 'electron':70 'electronic health record' 'endpoint':5,22,36,86,92,143,178,193,230,240 'exact':150 'exampl':224 'expect':243 'extrem':172 'financ':60,184 'gate':3,20 'health':71 'health data endpoint' 'http-post' 'infrastructur':61,186 'key':16,33,154 'land':79,175 'limit':158 'list':83,142,177 'live':94 'lowpaymentfee EHR' 'lowpaymentfee.com':43 'made':146 'medical records API' 'ml':183 'network':116 'offer':90 'openapi':216 'page':80,176,201 'part':40 'particular':85 'path':67 'pay':9,26,52 'pay-per-cal':51 'pay-per-call health API' 'pay-per-request':8,25 'payment':144,168 'per':10,27,53,129 'platform':44,134,233 'post':102,244 'price':103,139,198 'prompt':208 'protocol':50 'provid':77 'rate':157 'readm':200 'record':72 'render':203 'request':11,28,130 'request/response':219 'requir':17,34 'resourc':74 'return':96,237 'schema':220 'scheme':151 'second':167 'set':105 'sinc':120 'span':56 'spars':173 'spec':217 'specif':65,194 'specifi':164 'subscript':155 'suggest':68 'though':75 'timeout':169 'translat':126 'uniform':136 'unit':110 'unknown':247 'usdc':13,30,112,121 'usdc-base' 'use':122 'valid':98 'via':147 'wallet':207 'web3':185 'x402':2,19,49,99,149,162 'x402 EHR' 'x402-gated':1,18 'x402-payment' 'x402-protocol':48","prices":[{"id":"7acad1d2-51af-4f02-bff4-087b16cd4039","listingId":"e9fbaa79-48fe-402e-9c73-82c8d4e118b3","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/25","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:10.171Z"}],"sources":[{"listingId":"e9fbaa79-48fe-402e-9c73-82c8d4e118b3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ehr/25","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:10.171Z","lastSeenAt":"2026-04-22T16:32:33.074Z"}],"details":{"listingId":"e9fbaa79-48fe-402e-9c73-82c8d4e118b3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ehr/25 \\\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 valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/ehr/25"},{"claim":"Platform-wide pricing is $0.02 per request 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/25"},{"claim":"Documentation pages render only 'Connect wallet' with no additional content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving electronic health record data for a specific resource (ID 25)","Integrating EHR data into agent workflows with per-request micropayments","Accessing health data without API key management via x402 payment protocol"],"bestFor":["Agents needing on-demand EHR data access with no subscription","Developers experimenting with x402 pay-per-call health data APIs","Workflows requiring keyless, low-friction access to health records"],"notFor":["Production healthcare applications requiring documented schemas and compliance guarantees","Bulk EHR data retrieval (pay-per-request at $0.02 adds up)","Users needing HIPAA-compliant, auditable health data pipelines"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:22.549Z"},"updatedAt":"2026-04-22T16:32:33.074Z"}}