{"id":"b4f0df75-ab57-469d-b81e-42f251ca35fb","shortId":"c44TfE","kind":"x402","title":"Pay-per-call medical records API on Base via x402, settled in USDC.","tagline":"Pay-per-call medical records API on Base via x402, settled in USDC.","description":"This endpoint at lowpaymentfee.com provides access to a medical records resource (`/api/v1/medical/records/3`) using the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network in USDC (contract 0x8335…2913) using the \"exact\" scheme, with a maximum cost of $0.02 per request (20,000 base units at 6 decimals).\n\nThe provider lowpaymentfee.com hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all advertised at $0.02 per request with no API keys, no rate limits, and no minimum commitments. The specific endpoint listed here falls under a \"medical records\" path, though no detailed documentation, request schema, or response schema is available beyond the x402 challenge metadata. The endpoint is live and returns a proper 402 challenge.\n\nBecause no OpenAPI spec, request body schema, or example responses were found, the actual data returned and the required POST body are unknown. The \"medical/records\" path suggests health-related data, which may carry regulatory implications (HIPAA, etc.). Users should exercise caution and verify compliance requirements before integrating.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","medical-records","pay-per-call","no-api-key","json-response"],"categories":["medical","data"],"synonyms":["medical records API","health data endpoint","x402 medical API","pay-per-request medical data","USDC medical records","lowpaymentfee medical","Base network health API"],"warnings":["No request or response schema available — POST body format is unknown","Medical/health data endpoint may be subject to HIPAA or other healthcare regulations; no compliance information provided","No documentation beyond the homepage listing; endpoint behavior must be discovered empirically","The specific record ID '3' in the path is hardcoded — unclear if other IDs are available or how to discover them"],"endpointUrl":"https://lowpaymentfee.com/api/v1/medical/records/3","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/3","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge, but there is no OpenAPI spec, no request/response schema, no documentation beyond the landing page listing, and the medical records path has no further explanation. The actual data content and required inputs are entirely 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'0.02':74,109 '000':78 '0x8335':63 '20':77 '2913':64 '402':158 '6':82 'Base network health API' 'USDC medical records' 'accept':47 'access':34 'actual':173 'advertis':107 'ai/ml':100 'analyt':99 'api':7,21,96,114 'avail':144 'base':9,23,58,79 'base-network' 'beyond':145 'bodi':165,180 'broad':89 'call':4,18,95 'carri':193 'catalog':90 'caution':201 'challeng':148,159 'commit':122 'complianc':204 'contract':62 'cost':72 'data':98,174,190 'decim':83 'detail':136 'document':137 'endpoint':30,125,151 'etc':197 'exact':67 'exampl':168 'exercis':200 'fall':128 'finance/web3':102 'found':171 'health':188 'health data endpoint' 'health-rel':187 'hipaa':196 'host':87 'implic':195 'infer':101 'infrastructur':104 'integr':207 'json':52 'json-response' 'key':115 'limit':118 'list':126 'live':153 'lowpaymentfee medical' 'lowpaymentfee.com':32,86 'maximum':71 'may':192 'medic':5,19,37,131 'medical records API' 'medical-records' 'medical/records':184 'metadata':149 'minimum':121 'network':59 'no-api-key' 'openapi':162 'path':133,185 'pay':2,16,93 'pay-per-cal':1,15,92 'pay-per-call' 'pay-per-request medical data' 'payment':44,53 'per':3,17,75,94,110 'post':48,179 'proper':157 'protocol':45 'provid':33,85 'rate':117 'record':6,20,38,132 'regulatori':194 'relat':189 'request':49,76,111,138,164 'requir':178,205 'resourc':39 'respons':141,169 'return':51,155,175 'schema':139,142,166 'scheme':68 'settl':12,26,55 'span':97 'spec':163 'specif':124 'suggest':186 'though':134 'unit':80 'unknown':182 'usdc':14,28,61 'usdc-settlement' 'use':41,65 'user':198 'util':105 'verifi':203 'via':10,24 'x402':11,25,43,147 'x402 medical API' 'x402-payment'","prices":[{"id":"350c3ec3-404c-4d0e-b9ea-1c10a2deea7f","listingId":"b4f0df75-ab57-469d-b81e-42f251ca35fb","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/3","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:25.053Z"}],"sources":[{"listingId":"b4f0df75-ab57-469d-b81e-42f251ca35fb","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/medical/records/3","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:25.053Z","lastSeenAt":"2026-04-22T23:02:46.330Z"}],"details":{"listingId":"b4f0df75-ab57-469d-b81e-42f251ca35fb","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/medical/records/3 \\\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 402 challenge with x402Version 1, exact scheme, Base network, USDC asset, maxAmountRequired 20000","source_url":"https://lowpaymentfee.com/api/v1/medical/records/3"},{"claim":"The provider advertises $0.02 per request, no API keys, no rate limits, instant access, Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 with 6 decimals","source_url":"https://lowpaymentfee.com/api/v1/medical/records/3"}],"useCases":["Retrieving medical record data on a per-call payment basis","Integrating health data into agent workflows without API key management","Programmatic access to medical records with crypto micropayments"],"bestFor":["Agents or apps needing on-demand medical record lookups with no subscription","Developers wanting frictionless pay-per-call access on Base L2","Crypto-native workflows that settle in USDC"],"notFor":["Production healthcare applications requiring HIPAA-compliant, audited data pipelines","Use cases needing bulk or batch medical data retrieval at scale","Users who need detailed API documentation and guaranteed SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:03.202Z"},"updatedAt":"2026-04-22T23:02:46.330Z"}}