{"id":"82036429-4803-4179-8d29-0da8a2c24d9b","shortId":"xfnN8u","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/62` is part of the lowpaymentfee.com platform, which offers a collection of x402 protocol-gated APIs spanning data analytics, AI/ML inference, finance, and infrastructure utilities. The specific `/ehr/62` path suggests an Electronic Health Record (EHR) resource, though the provider's landing page does not list this particular endpoint among its documented API categories, and no further documentation about its schema, input parameters, or response format is available.\n\nThe endpoint is live and returns a valid x402 challenge on POST. Payment is settled on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a maximum amount of 20,000 base units. Since USDC uses 6 decimals, this translates to $0.02 per request — consistent with the platform's uniform $0.02/request pricing. The x402 scheme is \"exact\" with a 300-second timeout. No API keys, rate limits, or subscriptions are required; access is granted purely via the x402 payment header.\n\nBecause the endpoint path (`/ehr/62`) is not documented on the provider's site and the crawled docs/pricing/README pages all returned only a \"Connect wallet\" stub, the actual functionality, expected POST body, and response schema remain unknown. This listing should be treated as a stub until the provider publishes documentation for this specific resource.","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","health data endpoint","medical records API","x402 health API","lowpaymentfee EHR"],"warnings":["The /api/v1/ehr/62 endpoint is not listed among the provider's documented APIs — its existence and purpose are unverified beyond the 402 challenge.","No input schema, output schema, or documentation is available for this endpoint.","The 'ehr' path implies health data, which may be subject to regulatory requirements (e.g., HIPAA). No compliance information is provided.","All documentation pages (/docs, /api, /pricing, /README) returned only a 'Connect wallet' stub with no usable content."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ehr/62","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/62","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.200","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but the /ehr/62 path is not listed on the provider's site, no documentation exists for its inputs or outputs, and all doc pages returned only 'Connect wallet' stubs. The actual functionality is entirely unknown, making this effectively a stub 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'/ehr/62':66,190 '/request':156 '0.02':146,155 '000':135 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':128 '20':134 '300':165 '6':141 'EHR API' 'access':177 'actual':212 'ai/ml':58 'among':87 'amount':132 'analyt':57 'api':15,32,54,90,169 'avail':105 'base':7,24,123,136 'base-network' 'bodi':216 'categori':91 'challeng':115 'collect':48 'connect':208 'consist':149 'contract':127 'crawl':201 'data':56 'decim':142 'docs/pricing/readme':202 'document':89,95,193,234 'ehr':4,21,73 'ehr-data' 'electron':70 'electronic health record' 'endpoint':5,22,36,86,107,188 'exact':162 'expect':214 'financ':60 'format':103 'function':213 'gate':3,20,53 'grant':179 'header':185 'health':71 'health data endpoint' 'infer':59 'infrastructur':62 'input':99 'key':16,33,170 'land':79 'limit':172 'list':83,223 'live':109 'lowpaymentfee EHR' 'lowpaymentfee.com':43 'maximum':131 'medical records API' 'network':124 'no-api-key' 'offer':46 'page':80,203 'paramet':100 'part':40 'particular':85 'path':67,189 'pay':9,26 'pay-per-request':8,25 'payment':118,184 'per':10,27,147 'platform':44,152 'post':117,215 'price':157 'protocol':52 'protocol-g':51 'provid':77,196,232 'publish':233 'pure':180 'rate':171 'record':72 'remain':220 'request':11,28,148 'requir':17,34,176 'resourc':74,238 'respons':102,218 'return':111,205 'schema':98,219 'scheme':160 'second':166 'settl':120 'sinc':138 'site':198 'span':55 'specif':65,237 'stub':210,229 'subscript':174 'suggest':68 'though':75 'timeout':167 'translat':144 'treat':226 'uniform':154 'unit':137 'unknown':221 'usdc':13,30,126,139 'usdc-settlement' 'use':125,140 'util':63 'valid':113 'via':181 'wallet':209 'x402':2,19,50,114,159,183 'x402 health API' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"cf141b25-9666-4dfa-9357-ebcb3e963798","listingId":"82036429-4803-4179-8d29-0da8a2c24d9b","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/62","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:09.930Z"}],"sources":[{"listingId":"82036429-4803-4179-8d29-0da8a2c24d9b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ehr/62","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:09.930Z","lastSeenAt":"2026-04-22T18:32:56.686Z"}],"details":{"listingId":"82036429-4803-4179-8d29-0da8a2c24d9b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ehr/62 \\\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 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/ehr/62"},{"claim":"The platform advertises uniform $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/ehr/62"},{"claim":"The /api/v1/ehr/62 path is not listed among the provider's documented API categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving electronic health record data for a specific resource (ID 62)","Agent-driven programmatic access to health data without API key management","Pay-per-call access to EHR information settled on Base L2"],"bestFor":["Agents needing on-demand EHR data access without subscription overhead","Developers experimenting with x402-gated health data endpoints","Crypto-native applications that settle micro-payments on Base"],"notFor":["Production healthcare workflows requiring documented schemas and compliance guarantees","Users who need bulk or batch EHR data retrieval at scale","Anyone needing HIPAA-compliant audit trails (no compliance documentation available)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:22.841Z"},"updatedAt":"2026-04-22T18:32:56.686Z"}}