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 payment wall. The specific resource `/api/v1/medical/records/21` returns JSON content upon payment of 0.02 USDC (20,000 base units of USDC on the Base network). The endpoint accepts POST requests and settles payments on-chain via the x402 "exact" scheme.
The provider lowpaymentfee.com hosts a broad catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all priced at $0.02 per request with no API keys, no rate limits, and no commitments. Payments are made in USDC on the Base L2 network. The x402 challenge was successfully captured, confirming the endpoint is live.
However, the specific nature of the "medical records" data served by this endpoint is entirely unclear. There is no documentation, schema, or example response available for this resource. The provider's landing page does not list this medical records endpoint among its advertised APIs, raising questions about what data is actually returned and whether it contains real, synthetic, or placeholder medical information. Users should exercise caution given the sensitive nature of medical data and the complete lack of documentation for this specific route.
Capabilities
Use cases
- —Retrieving medical record data for record ID 21 via a single paid API call
- —Demonstrating x402 micropayment flows with a medical data endpoint
- —Integrating pay-per-request health data into agent workflows
Fit
Best for
- —Developers exploring x402 payment protocol integrations
- —Agents needing on-demand access to specific medical record data
- —Testing micropayment-gated API consumption on Base
Not for
- —Production healthcare applications requiring HIPAA-compliant, documented APIs
- —Bulk retrieval of medical records (single-record endpoint, no batch support documented)
- —Users who need clear data provenance and schema documentation before consuming health data
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/medical/records/21 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request/response schema, no examples, and the medical records endpoint is not listed on the provider's own landing page. The nature and legitimacy of the data is unknown.
Warnings
- —This endpoint claims to serve 'medical records' but provides no documentation, schema, or data provenance information — exercise extreme caution with any data returned.
- —The /api/v1/medical/records/21 path is not listed among the provider's advertised APIs on the landing page.
- —No OpenAPI spec, no example responses, and no request body schema are available.
- —Medical/health data may be subject to regulatory requirements (e.g., HIPAA); the provider gives no indication of compliance.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/medical/records/21
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/medical/records/21
- —Provider advertises $0.02 per request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —The medical records endpoint is not listed among the provider's advertised API categorieshttps://lowpaymentfee.com