{"id":"a8e95447-f9d8-4202-b4d5-efd7b5cf388e","shortId":"pKauzG","kind":"x402","title":"Pay-per-call medical records endpoint on Base via x402, settling in USDC at $0.02/request.","tagline":"Pay-per-call medical records endpoint on Base via x402, settling in USDC at $0.02/request.","description":"This x402 endpoint at lowpaymentfee.com serves medical record data behind a micropayment wall. The specific resource `/api/v1/medical/records/64` returns JSON content upon payment of 20,000 base-unit USDC (i.e., $0.02) on the Base network. Payment is handled via the x402 protocol: callers receive a 402 challenge with payment details and must include an X-PAYMENT header to access the resource.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call APIs across categories including data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced at $0.02 per request. The platform advertises no API keys, no rate limits, and instant access. Settlement occurs on-chain via USDC (contract 0x8335…2913) on Base.\n\nImportant caveats: the endpoint's actual response schema is undocumented — there is no OpenAPI spec, no example responses, and no description of what fields a \"medical record\" contains. The category (medical records) suggests potentially regulated health data, but no compliance information (e.g., HIPAA) is provided. Callers should exercise caution and verify the nature and legitimacy of the data before relying on it.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-call","medical-records","json-response","no-api-key"],"categories":["health","data"],"synonyms":["medical records API","health data endpoint","x402 medical","pay-per-call health records","USDC micropayment API","Base network API","lowpaymentfee medical"],"warnings":["No OpenAPI or response schema available — actual response content is unknown","Endpoint claims to serve 'medical records' but provides no compliance or regulatory information (e.g., HIPAA)","No documentation beyond the landing page listing; /api, /pricing, and /README pages are empty (wallet-connect only)","The legitimacy and nature of the 'medical record' data cannot be verified from available materials"],"endpointUrl":"https://lowpaymentfee.com/api/v1/medical/records/64","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/64","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 confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no response schema, no example responses, and no documentation about what the medical records endpoint actually returns. The regulated nature of medical data with zero compliance documentation further lowers 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'/request':17,34 '0.02':16,33,65,129 '000':59 '0x8335':152 '20':58 '2913':153 '402':80 'Base network API' 'USDC micropayment API' 'access':94,143 'across':115 'actual':161 'advertis':134 'ai/ml':120 'analyt':119 'api':114,136 'base':9,26,61,68,155 'base-unit':60 'behind':44 'broader':103 'call':4,21,113 'caller':77,201 'categori':116,185 'caution':204 'caveat':157 'chain':148 'challeng':81 'complianc':195 'contain':183 'content':54 'contract':151 'data':43,118,192,213 'descript':176 'detail':84 'dozen':108 'e.g':197 'endpoint':7,24,37,98,159 'exampl':172 'exercis':203 'field':179 'finance/web3':122 'handl':72 'header':92 'health':191 'health data endpoint' 'hipaa':198 'i.e':64 'import':156 'includ':87,117 'infer':121 'inform':196 'infrastructur':124 'instant':142 'json':53 'json-response' 'key':137 'legitimaci':210 'limit':140 'lowpaymentfee medical' 'lowpaymentfee.com':39,105 'medic':5,22,41,181,186 'medical records API' 'medical-records' 'micropay':46 'must':86 'natur':208 'network':69 'no-api-key' 'occur':145 'offer':107 'on-chain':146 'openapi':169 'part':100 'pay':2,19,111 'pay-per-cal':1,18,110 'pay-per-call' 'pay-per-call health records' 'payment':56,70,83,91 'per':3,20,112,130 'platform':104,133 'potenti':189 'price':127 'protocol':76 'provid':200 'rate':139 'receiv':78 'record':6,23,42,182,187 'regul':190 'reli':215 'request':131 'resourc':50,96 'respons':162,173 'return':52 'schema':163 'serv':40 'settl':12,29 'settlement':144 'spec':170 'specif':49 'suggest':188 'undocu':165 'unit':62 'upon':55 'usdc':14,31,63,150 'usdc-base' 'util':125 'verifi':206 'via':10,27,73,149 'wall':47 'x':90 'x-payment':89 'x402':11,28,36,75 'x402 medical' 'x402-payment'","prices":[{"id":"6012150e-3ff0-4f1e-993f-3ea7ef4c4675","listingId":"a8e95447-f9d8-4202-b4d5-efd7b5cf388e","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/64","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:25.283Z"}],"sources":[{"listingId":"a8e95447-f9d8-4202-b4d5-efd7b5cf388e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/medical/records/64","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:25.283Z","lastSeenAt":"2026-04-22T05:32:14.809Z"}],"details":{"listingId":"a8e95447-f9d8-4202-b4d5-efd7b5cf388e","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/medical/records/64\n# Returns 402 with x402 challenge. Include X-PAYMENT header with signed USDC payment on Base to access.","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requesting 20,000 base-unit USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/medical/records/64"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/medical/records/64"}],"useCases":["Retrieving medical record data for record ID 64 via a single micropayment","Integrating pay-per-call health data into agent workflows without API key management","Demonstrating x402 protocol payment flows with a real endpoint"],"bestFor":["Developers experimenting with x402 micropayment protocol","Agents needing on-demand data access without subscription commitments","Projects requiring Base-network USDC settlement for API calls"],"notFor":["Production healthcare applications requiring HIPAA-compliant data handling","Use cases needing documented response schemas or SLAs","Bulk retrieval of large medical datasets (pay-per-call at $0.02 each)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:02.83Z"},"updatedAt":"2026-04-22T05:32:14.809Z"}}