{"id":"5a23f2d7-cf90-47e2-b25b-101424c9f839","shortId":"v96fWJ","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/71` is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-request APIs spanning data analytics, AI/ML inference, finance, and infrastructure utilities. Each call is settled on the Base network using USDC (contract `0x8335…2913`) through the x402 exact-payment scheme. The specific endpoint probed here serves medical records (record ID 71), accepting POST requests and returning `application/json` responses.\n\nThe x402 challenge advertises a `maxAmountRequired` of 20,000 base units. USDC uses 6 decimals, so the per-request cost is $0.02 — consistent with the site's uniform $0.02/request pricing across all listed endpoints. No API keys or rate limits are advertised; access is granted immediately upon valid payment. The payment timeout is 300 seconds.\n\nImportant caveats: the endpoint is labeled \"medical records,\" which places it in a regulated data category, yet no documentation exists describing the data schema, provenance, compliance posture (HIPAA, GDPR), or what record ID 71 actually contains. The site's /api, /pricing, and /README pages all resolve to a minimal \"Connect wallet\" stub with no further documentation. There is no OpenAPI spec, no example request/response, and no description of input parameters. Treat this endpoint with caution until the provider publishes proper documentation and compliance disclosures.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","medical-records","pay-per-request","json-response","post-method"],"categories":["health","data"],"synonyms":["medical records API","health data endpoint","x402 medical API","pay-per-call health records","USDC medical data","lowpaymentfee medical","Base network health API"],"warnings":["Endpoint is categorized as 'medical records' — a regulated data category — but no compliance disclosures (HIPAA, GDPR, etc.) are provided.","No API documentation, OpenAPI spec, or example request/response is available anywhere on the site.","The /api, /pricing, and /README pages all return only a 'Connect wallet' stub with no useful content.","The nature and provenance of the data behind record ID 71 is completely unknown.","Input parameters for the POST request are undocumented."],"endpointUrl":"https://lowpaymentfee.com/api/v1/medical/records/71","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/71","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request/response schemas, no OpenAPI spec, no examples, and no compliance information for what is labeled as medical data. The site's doc pages are empty 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'/api/v1/medical/records/71':41 '/pricing':203 '/readme':205 '/request':17,34,136 '0.02':16,33,128,135 '000':114 '0x8335':79 '20':113 '2913':80 '300':161 '6':119 '71':98,196 'Base network health API' 'USDC medical data' 'accept':99 'access':150 'across':138 'actual':197 'advertis':109,149 'ai/ml':62 'analyt':61 'api':58,143 'application/json':104 'base':9,26,74,115 'base-network' 'broad':51 'call':4,21,69 'catalog':52 'categori':178 'caution':237 'caveat':164 'challeng':108 'complianc':188,245 'connect':212 'consist':129 'contain':198 'contract':78 'cost':126 'data':60,177,185 'decim':120 'describ':183 'descript':229 'disclosur':246 'document':181,218,243 'enabl':38 'endpoint':7,24,39,90,141,166,235 'exact':85 'exact-pay':84 'exampl':225 'exist':182 'financ':64 'gdpr':191 'grant':152 'health data endpoint' 'hipaa':190 'id':97,195 'immedi':153 'import':163 'infer':63 'infrastructur':66 'input':231 'json-response' 'key':144 'label':168 'limit':147 'list':140 'lowpaymentfee medical' 'lowpaymentfee.com':46 'maxamountrequir':111 'medic':5,22,94,169 'medical records API' 'medical-records' 'minim':211 'network':75 'offer':49 'openapi':222 'page':206 'paramet':232 'part':43 'pay':2,19,55 'pay-per-cal':1,18 'pay-per-call health records' 'pay-per-request':54 'payment':86,156,158 'per':3,20,56,124 'per-request':123 'place':172 'platform':47 'post':100 'post-method' 'postur':189 'price':137 'probe':91 'proper':242 'proven':187 'provid':240 'publish':241 'rate':146 'record':6,23,95,96,170,194 'regul':176 'request':57,101,125 'request/response':226 'resolv':208 'respons':105 'return':103 'schema':186 'scheme':87 'second':162 'serv':93 'settl':12,29,71 'site':132,200 'span':59 'spec':223 'specif':89 'stub':214 'timeout':159 'treat':233 'uniform':134 'unit':116 'upon':154 'usdc':14,31,77,117 'usdc-settlement' 'use':76,118 'util':67 'valid':155 'via':10,27 'wallet':213 'x402':11,28,37,83,107 'x402 medical API' 'x402-enabled':36 'x402-payment' 'yet':179","prices":[{"id":"6a1b218d-e401-44e3-aabf-d0e51ebb2313","listingId":"5a23f2d7-cf90-47e2-b25b-101424c9f839","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/71","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:25.310Z"}],"sources":[{"listingId":"5a23f2d7-cf90-47e2-b25b-101424c9f839","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/medical/records/71","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:25.310Z","lastSeenAt":"2026-04-22T07:02:08.826Z"}],"details":{"listingId":"5a23f2d7-cf90-47e2-b25b-101424c9f839","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/medical/records/71 \\\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 x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/medical/records/71"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/medical/records/71"},{"claim":"Site advertises uniform $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The /api, /pricing, and /README pages contain only a 'Connect wallet' stub","source_url":"https://lowpaymentfee.com/api"}],"useCases":["Retrieving medical record data on a per-request payment basis","Integrating health records into agent workflows that can settle USDC on Base","Programmatic access to structured medical data without API key provisioning"],"bestFor":["Agents or applications that need on-demand medical record access with crypto micropayments","Developers exploring x402 payment flows on Base","Use cases where keyless, pay-per-call access is preferred over subscription billing"],"notFor":["Production healthcare applications requiring HIPAA-compliant, audited data pipelines","Users who need detailed API documentation, schemas, or compliance guarantees before integration","High-volume batch retrieval where per-request pricing is inefficient"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:02.764Z"},"updatedAt":"2026-04-22T07:02:08.826Z"}}