x402-gated medical records endpoint on Base, paid per-request in USDC.
What it does
This endpoint at lowpaymentfee.com serves medical record data behind an x402 paywall. The specific resource `/api/v1/medical/records/14` returns JSON content upon payment. It is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call API endpoints across categories like data analytics, AI/ML inference, finance, and infrastructure utilities.
The endpoint accepts POST requests and settles payments on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required per call is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals). The x402 challenge specifies a 300-second payment timeout. No API keys or rate limits are advertised; access is granted purely via the x402 payment header.
Important caveat: the endpoint is labeled "medical records," which suggests it may return health-related data. However, no documentation, schema, or sample response is available to confirm what data is actually returned, its format, or whether it contains real or synthetic patient information. The platform's landing page does not list this specific medical records endpoint among its advertised APIs, so its actual content and compliance posture are unknown.
Capabilities
Use cases
- —Retrieving medical record data on a per-request payment basis
- —Integrating health data into agent workflows without API key management
- —Programmatic access to record #14 for downstream processing
Fit
Best for
- —Agents that need on-demand medical record access with crypto micropayments
- —Developers exploring x402 payment-gated data APIs
- —Workflows requiring no-signup, pay-as-you-go data retrieval
Not for
- —Production healthcare applications requiring HIPAA compliance guarantees
- —Use cases needing bulk or batch medical record retrieval
- —Users who cannot transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/medical/records/14 \
-H "X-PAYMENT: <x402_payment_token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation, no example request/response, and the medical records endpoint is not listed on the provider's own landing page. The nature and format of the returned data are completely unknown, and the health-data category raises regulatory concerns.
Warnings
- —No documentation or schema available for this specific endpoint
- —Endpoint labeled 'medical records' — unclear if data is real, synthetic, or compliant with health data regulations (e.g., HIPAA)
- —This endpoint is not listed among the provider's advertised APIs on the landing page
- —No example request or response available; actual payload structure is unknown
- —Regulated data category (health/medical) — verify compliance before use
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base network with a 300-second timeouthttps://lowpaymentfee.com/api/v1/medical/records/14
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/medical/records/14
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The medical records endpoint is not listed among the provider's advertised API categorieshttps://lowpaymentfee.com