{"id":"95463544-c799-4830-b5cb-b36472f65171","shortId":"yZdtwE","kind":"x402","title":"x402-gated EHR data endpoint on Base, pay $0.02 per request in USDC — no API keys required.","tagline":"x402-gated EHR data endpoint on Base, pay $0.02 per request in USDC — no API keys required.","description":"This endpoint at lowpaymentfee.com provides access to an Electronic Health Record (EHR) resource via the x402 payment protocol. The specific path `/api/v1/ehr/42` suggests retrieval of a particular EHR record (ID 42). Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum amount of 20,000 base units, which equals $0.02 given USDC's 6 decimals. The endpoint accepts POST requests and returns application/json.\n\nThe broader lowpaymentfee.com platform hosts a variety of x402-gated APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request. The platform advertises no API keys, no rate limits, and instant access. However, documentation pages (/docs, /pricing, /README) all resolve to a minimal \"Connect wallet\" prompt with no substantive technical documentation, OpenAPI spec, or example payloads available.\n\nBecause the specific EHR endpoint lacks any schema documentation, request/response examples, or explanation of what data it returns, agents should treat this as a low-documentation endpoint. The \"EHR\" label implies health-related data, which may carry regulatory considerations (HIPAA, etc.). The x402 challenge is live and well-formed, confirming the endpoint is operational.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","ehr-data","json-response","per-request-pricing","no-api-key"],"categories":["health","data"],"synonyms":["electronic health record API","EHR endpoint","medical record API","health data API","x402 EHR","pay-per-call health data","lowpaymentfee EHR"],"warnings":["No API documentation, OpenAPI spec, or request/response examples available — all doc pages return only 'Connect wallet'","EHR (Electronic Health Record) data may be subject to HIPAA or other health data regulations; no compliance information is provided","The specific data returned by /api/v1/ehr/42 is completely undocumented — it is unclear whether this is real patient data, synthetic/demo data, or a placeholder","No input schema documented; POST body requirements are unknown"],"endpointUrl":"https://lowpaymentfee.com/api/v1/ehr/42","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/42","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint is operational and pricing is clear ($0.02 USDC on Base). However, there is zero documentation on request/response schemas, no OpenAPI spec, no examples, and all doc pages return only a 'Connect wallet' stub. The EHR domain label raises regulatory concerns with no clarification 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'/docs':147 '/pricing':148 '/readme':149 '0.02':10,28,90,129 '000':85 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':78 '20':84 '42':67 '6':94 'EHR endpoint' 'accept':98 'access':42,143 'advertis':134 'agent':187 'ai/ml':119 'amount':82 'analyt':118 'api':16,34,115,136 'application/json':103 'avail':168 'base':8,26,73,86 'base-network' 'broader':105 'carri':207 'challeng':214 'confirm':221 'connect':155 'consider':209 'contract':77 'data':5,23,117,122,184,204 'decim':95 'document':145,162,177,195 'ehr':4,22,48,64,172,198 'ehr-data' 'electron':45 'electronic health record API' 'endpoint':6,24,38,97,173,196,223 'equal':89 'etc':211 'exampl':166,179 'explan':181 'finance/web3':121 'form':220 'gate':3,21,114 'given':91 'health':46,202 'health data API' 'health-rel':201 'hipaa':210 'host':108 'howev':144 'id':66 'impli':200 'infer':120 'infrastructur':124 'instant':142 'json-response' 'key':17,35,137 'label':199 'lack':174 'limit':140 'live':216 'low':194 'low-document':193 'lowpaymentfee EHR' 'lowpaymentfee.com':40,106 'maximum':81 'may':206 'medical record API' 'minim':154 'network':74 'no-api-key' 'openapi':163 'oper':225 'page':146 'particular':63 'path':57 'pay':9,27 'pay-per-call health data' 'payload':167 'payment':53,68 'per':11,29,130 'per-request-pricing' 'platform':107,133 'post':99 'price':127 'prompt':157 'protocol':54 'provid':41 'rate':139 'record':47,65 'regulatori':208 'relat':203 'request':12,30,100,131 'request/response':178 'requir':18,36 'resolv':151 'resourc':49 'retriev':60 'return':102,186 'schema':176 'settl':70 'span':116 'spec':164 'specif':56,171 'substant':160 'suggest':59 'technic':161 'treat':189 'unit':87 'usdc':14,32,76,92 'usdc-settlement' 'use':75 'util':125 'varieti':110 'via':50 'wallet':156 'well':219 'well-form':218 'x402':2,20,52,113,213 'x402 EHR' 'x402-gated':1,19,112 'x402-payment'","prices":[{"id":"a282e1bf-7f7e-4599-9236-795b7f8dc750","listingId":"95463544-c799-4830-b5cb-b36472f65171","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/42","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:09.777Z"}],"sources":[{"listingId":"95463544-c799-4830-b5cb-b36472f65171","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ehr/42","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:09.777Z","lastSeenAt":"2026-04-22T18:32:56.205Z"}],"details":{"listingId":"95463544-c799-4830-b5cb-b36472f65171","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ehr/42 \\\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 402 challenge with maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/ehr/42"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/ehr/42"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /pricing, /README) resolve to minimal 'Connect wallet' content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving electronic health record data for a specific patient or record ID","Integrating EHR data into health-tech agent workflows with per-request micropayments","Accessing health data without managing API keys or subscriptions"],"bestFor":["Agents needing on-demand EHR data access via crypto micropayments","Developers prototyping health data integrations without subscription commitments","x402-compatible wallets and agent frameworks on Base"],"notFor":["Production healthcare systems requiring HIPAA-compliant, audited data pipelines","Users who need detailed API documentation or schema guarantees before integration","Non-crypto users who cannot settle payments in USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.068Z"},"updatedAt":"2026-04-22T18:32:56.205Z"}}