{"id":"13ffd4aa-1500-4eff-9386-609a8560d63d","shortId":"qsarHT","kind":"x402","title":"Pay-per-call medical records endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call medical records endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This x402-enabled endpoint at `/api/v1/medical/records/85` is part of a broader suite of pay-per-request APIs hosted on lowpaymentfee.com. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The x402 challenge was successfully captured, confirming the endpoint is live.\n\nThe provider offers a wide catalog of APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced uniformly at $0.02 per request. The specific endpoint in this listing appears to serve medical records data (resource path `/api/v1/medical/records/85`), though the provider's landing page does not list a dedicated \"medical\" category, and no documentation, schema, or example payloads are available for this particular route. The endpoint's description is simply \"Premium API Access,\" which is generic and uninformative about the actual data returned.\n\nBecause no OpenAPI spec, request/response schema, or detailed documentation exists for this endpoint, the exact input parameters and output format are unknown. The provider advertises no API keys, no rate limits, and instant access. Agents should send a POST request with an `X-PAYMENT` header containing a valid x402 payment proof to receive the response.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","medical-records","json-response","no-api-key"],"categories":["data","health"],"synonyms":["medical records API","health data endpoint","x402 medical API","pay-per-call health records","lowpaymentfee medical","USDC medical data"],"warnings":["No documentation or schema available for /api/v1/medical/records/85 — input parameters and response format are entirely unknown.","This endpoint is not listed in the provider's public API catalog on the landing page, raising questions about its status and legitimacy.","Medical/health data may be subject to regulatory requirements (e.g., HIPAA, GDPR health data provisions). No compliance information is provided.","The generic description 'Premium API Access' gives no indication of what data is actually returned.","No examples, no OpenAPI spec, and no README content available (pages behind wallet connect)."],"endpointUrl":"https://lowpaymentfee.com/api/v1/medical/records/85","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/medical/records/85","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation for this specific medical records route, and the endpoint path is not listed on the provider's own landing page. The \"medical records\" label raises regulatory concerns with zero supporting 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'/request':17,34 '0.02':16,33,87,124 '000':82 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':75 '20':81 '6':90 'USDC medical data' 'accept':59 'access':176,220 'actual':184 'advertis':211 'agent':221 'ai/ml':114 'amount':79 'analyt':113 'api':53,110,175,213 'appear':133 'avail':163 'base':9,26,70,83 'base-network' 'broader':46 'call':4,21 'captur':97 'catalog':108 'categori':154 'challeng':94 'confirm':98 'contain':233 'contract':74 'data':112,138,185 'decim':91 'dedic':152 'descript':171 'detail':194 'document':157,195 'enabl':38 'endpoint':7,24,39,58,100,129,169,199 'equal':86 'exact':201 'exampl':160 'exist':196 'finance/web3':116 'format':206 'generic':179 'header':232 'health data endpoint' 'host':54 'infer':115 'infrastructur':118 'input':202 'instant':219 'json':64 'json-response' 'key':214 'land':146 'limit':217 'list':132,150 'live':102 'lowpaymentfee medical' 'lowpaymentfee.com':56 'maximum':78 'medic':5,22,136,153 'medical records API' 'medical-records' 'network':71 'no-api-key' 'offer':105 'openapi':189 'output':205 'page':147 'paramet':203 'part':43 'particular':166 'path':140 'pay':2,19,50 'pay-per-cal':1,18 'pay-per-call health records' 'pay-per-request':49 'payload':161 'payment':65,231,237 'per':3,20,51,125 'post':60,225 'premium':174 'price':121 'proof':238 'provid':104,144,210 'rate':216 'receiv':240 'record':6,23,137 'request':52,61,126,226 'request/response':191 'resourc':139 'respons':242 'return':63,186 'rout':167 'schema':158,192 'send':223 'serv':135 'settl':12,29,67 'simpli':173 'span':111 'spec':190 'specif':128 'success':96 'suit':47 'though':142 'uniform':122 'uninform':181 'unit':84 'unknown':208 'usdc':14,31,73,88 'usdc-settlement' 'use':72,89 'util':119 'valid':235 'via':10,27 'wide':107 'x':230 'x-payment':229 'x402':11,28,37,93,236 'x402 medical API' 'x402-enabled':36 'x402-payment'","prices":[{"id":"c5cdef72-ffbf-4fa1-accd-e5451d251ed3","listingId":"13ffd4aa-1500-4eff-9386-609a8560d63d","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/medical/records/85","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:25.524Z"}],"sources":[{"listingId":"13ffd4aa-1500-4eff-9386-609a8560d63d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/medical/records/85","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:25.524Z","lastSeenAt":"2026-04-22T02:32:05.568Z"}],"details":{"listingId":"13ffd4aa-1500-4eff-9386-609a8560d63d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/medical/records/85 \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/medical/records/85"},{"claim":"USDC contract address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/medical/records/85"},{"claim":"Provider advertises $0.02 per request, no API keys, no rate limits, instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The landing page lists APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categories but does not list a medical records endpoint","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving medical record data on a per-request payment basis","Integrating health data into agent workflows without subscription commitments","Programmatic access to medical records via crypto-settled micropayments"],"bestFor":["Agents needing on-demand medical record lookups without API key management","Developers exploring x402 pay-per-call patterns on Base","Low-volume or sporadic access to health data where subscriptions are overkill"],"notFor":["Production healthcare applications requiring HIPAA-compliant, audited data pipelines","High-volume bulk medical data retrieval (no documented batch endpoints)","Users who need detailed documentation or guaranteed SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:02.475Z"},"updatedAt":"2026-04-22T02:32:05.568Z"}}