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/43` returns JSON content upon payment. It is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance, and utility services, all settled via USDC on the Base network using the x402 protocol.
The x402 challenge confirms the endpoint is live and accepts POST requests. The price for this particular endpoint is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a maximum timeout of 300 seconds. No API keys or rate limits are advertised; access is granted purely through on-chain micropayment.
Important caveat: the endpoint path suggests it returns medical records, which is a regulated data category. No documentation, schema, or sample responses are available beyond the x402 challenge metadata and the landing page. The actual content, structure, and provenance of the data returned are unknown. Prospective consumers should exercise caution, especially given the sensitivity of medical data and the lack of any visible compliance or data-source disclosures.
Capabilities
Use cases
- —Retrieving medical record data for record ID 43 via a single paid API call
- —Integrating pay-per-request medical data into agent workflows without API key management
- —Demonstrating x402 micropayment protocol usage for sensitive data access
Fit
Best for
- —Developers experimenting with x402 protocol payments on Base
- —Agents needing on-demand, keyless access to structured data endpoints
- —Prototyping micropayment-gated data retrieval flows
Not for
- —Production healthcare applications requiring HIPAA-compliant data pipelines
- —Bulk retrieval of large medical datasets (single-record, per-request pricing)
- —Users who need detailed documentation or schema guarantees before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/medical/records/43 \
-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 documentation, no request/response schema, no sample data, and the medical records category raises regulatory concerns with zero compliance information provided. The listing is essentially a stub with only the x402 challenge as evidence.
Warnings
- —Medical/health data category — no HIPAA compliance, data provenance, or privacy disclosures found
- —No request body schema or response schema available; actual data content is unknown
- —No documentation beyond the landing page; /api, /pricing, and /README pages are empty (wallet-connect only)
- —Single hardcoded record ID (43) — unclear if other record IDs are accessible or what they represent
- —Regulated data category: consumers should verify legal and compliance requirements before use
Citations
- —Endpoint returns 402 with x402 challenge accepting USDC on Base network at 20000 base units ($0.02)https://lowpaymentfee.com/api/v1/medical/records/43
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/medical/records/43