{"id":"19a532fc-f6e7-4829-a4cd-f2568acb2313","shortId":"dxtZWc","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/60` 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/60` path suggests an Electronic Health Record (EHR) resource, though the provider's landing page does not explicitly list or document this particular endpoint. The platform advertises a uniform $0.02 per request pricing model across its API catalog.\n\nThe endpoint is live and returns a valid x402 challenge on POST. Payment is settled in USDC on the Base network (asset `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) using the \"exact\" scheme. The `maxAmountRequired` is 20000 base units, which at 6 decimals equals $0.02 — consistent with the site-wide pricing. No API keys, rate limits, or subscriptions are required; callers simply attach an `X-PAYMENT` header with a valid x402 payment proof.\n\nDocumentation is extremely sparse. The docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the `/ehr/60` endpoint actually returns. The \"EHR\" path segment and the number 60 are not explained anywhere in the crawled material. Callers should treat this as an exploratory endpoint until the provider publishes proper documentation.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","ehr-data"],"categories":["health","data"],"synonyms":["electronic health record","EHR API","medical records API","health data endpoint","x402 EHR","lowpaymentfee","pay-per-call health API"],"warnings":["The /api/v1/ehr/60 endpoint is not listed on the provider's landing page among available APIs.","No documentation exists for this endpoint — docs, pricing, API, and README pages all show only 'Connect wallet'.","'EHR' typically refers to Electronic Health Records, which may involve regulated health data (HIPAA, GDPR). No compliance information is provided.","No request or response schema is available; callers cannot know what to send or what to expect back."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ehr/60","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/60","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 with clear pricing ($0.02 USDC on Base). However, there is zero documentation for this specific endpoint — no schema, no examples, no explanation of what 'ehr/60' returns. The docs pages are empty. The endpoint path is not even listed on the provider's landing page, making this effectively a stub 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'/ehr/60':66,209 '0.02':95,142 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':126 '20000':134 '6':139 '60':220 'EHR API' 'across':100 'actual':211 'advertis':92 'ai/ml':59 'analyt':58 'anywher':224 'api':15,32,55,102,151,180 'asset':125 'attach':161 'base':7,24,123,135 'base-network' 'call':54 'caller':159,229 'catalog':103 'challeng':113 'collect':46 'connect':188 'consist':143 'content':194 'crawl':227 'data':57 'decim':140 'descript':205 'doc':178 'document':86,173,242 'ehr':4,21,73,214 'ehr-data' 'electron':70 'electronic health record' 'endpoint':5,22,36,89,105,210,236 'equal':141 'exact':129 'exampl':202 'explain':223 'explicit':83 'exploratori':235 'extrem':175 'financ':60 'gate':3,20 'header':166 'health':71 'health data endpoint' 'infrastructur':61 'key':16,33,152 'land':79 'limit':154 'list':84 'live':107 'lowpaymentfee' 'lowpaymentfee.com':43 'materi':228 'maxamountrequir':132 'medical records API' 'model':99 'network':124 'no-api-key' 'number':219 'openapi':198 'page':80,183 'part':40 'particular':88 'path':67,215 'pay':9,26,52 'pay-per-cal':51 'pay-per-call health API' 'pay-per-request':8,25 'payment':116,165,171 'per':10,27,53,96 'platform':44,91 'post':115 'price':98,149,179 'prompt':190 'proof':172 'proper':241 'protocol':50 'provid':77,239 'publish':240 'rate':153 'readm':182 'record':72 'render':185 'request':11,28,97 'request/response':201 'requir':17,34,158 'resourc':74 'return':109,212 'schema':199 'scheme':130 'segment':216 'settl':118 'simpli':160 'site':147 'site-wid':146 'span':56 'spars':176 'specif':65 'subscript':156 'substant':193 'suggest':68 'though':75 'treat':231 'uniform':94 'unit':136 'usdc':13,30,120 'usdc-settlement' 'use':127 'valid':111,169 'wallet':189 'wide':148 'x':164 'x-payment':163 'x402':2,19,49,112,170 'x402 EHR' 'x402-gated':1,18 'x402-payment' 'x402-protocol':48","prices":[{"id":"1502a2b8-b0d2-4ee3-ad7d-b1a6ec5e3419","listingId":"19a532fc-f6e7-4829-a4cd-f2568acb2313","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/60","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:09.823Z"}],"sources":[{"listingId":"19a532fc-f6e7-4829-a4cd-f2568acb2313","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ehr/60","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:09.823Z","lastSeenAt":"2026-04-22T18:04:46.508Z"}],"details":{"listingId":"19a532fc-f6e7-4829-a4cd-f2568acb2313","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ehr/60 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","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 in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/ehr/60"},{"claim":"USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/ehr/60"},{"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":"The /api/v1/ehr/60 endpoint is not listed among the available APIs on the landing page","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages render only a 'Connect wallet' prompt with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving electronic health record data on a per-request basis","Integrating EHR lookups into agent workflows without managing API keys","Programmatic access to health-related data records via crypto micropayments"],"bestFor":["Developers experimenting with x402 pay-per-call protocols","Agents needing on-demand EHR data without subscription overhead","Projects already using USDC on Base for micropayments"],"notFor":["Production healthcare applications requiring documented, HIPAA-compliant APIs","Users who need detailed schema documentation before integrating","High-volume bulk EHR data retrieval (no documented batch support)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:22.959Z"},"updatedAt":"2026-04-22T18:04:46.508Z"}}