x402-gated EHR endpoint on Base, pay $0.02 per request in USDC — no API keys required.
What it does
This endpoint at `/api/v1/ehr/73` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-call APIs settled in USDC on the Base network. The specific resource at path `/ehr/73` is labeled "Premium API Access" but its exact data payload is undocumented — the "ehr" path segment suggests Electronic Health Records, though no schema or sample response is provided by the provider.
The endpoint is live and returns a valid x402 challenge (HTTP 402) requesting payment of up to 20,000 base units of USDC (0x8335…2913 on Base). Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the site-wide flat pricing of $0.02/request advertised on the landing page. Payment is made via the x402 "exact" scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3, with a 300-second timeout. The endpoint accepts POST requests.
The broader lowpaymentfee.com platform advertises categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all at the same $0.02 price point. However, the `/api/v1/ehr/73` path does not appear in any of the documented API listings on the landing page, and no documentation, request schema, or response schema is available for this specific endpoint. Users should treat this as an undocumented endpoint with uncertain output.
Capabilities
Use cases
- —Retrieving health record data (resource ID 73) via a single paid API call
- —Agent-driven workflows that need on-demand EHR access without subscription keys
- —Programmatic access to health data settled in USDC on Base
Fit
Best for
- —Developers or agents needing keyless, pay-per-call access to health-related data
- —x402-compatible wallets and agent frameworks on Base
- —Low-volume or exploratory access where $0.02/call is acceptable
Not for
- —Production healthcare systems requiring HIPAA-compliant, documented APIs with SLAs
- —High-volume bulk EHR data retrieval where per-call pricing is impractical
- —Users who need detailed API documentation or response schema guarantees before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ehr/73 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation, no request/response schema, and the /ehr/73 path is not listed among the provider's advertised APIs. The purpose and output of this endpoint are essentially unknown, making it a stub listing.
Warnings
- —The /api/v1/ehr/73 path is not listed among the provider's documented APIs on the landing page — it may be a test, placeholder, or unlisted endpoint.
- —No request body schema or response schema is available; the actual data returned is unknown.
- —The 'ehr' path suggests health/medical data, which may be subject to regulatory requirements (e.g., HIPAA). No compliance information is provided.
- —Documentation pages (/docs, /api, /pricing, /README) all returned only 'Connect wallet' with no substantive content.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/ehr/73
- —USDC contract address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base uses 6 decimals, so 20000 base units = $0.02https://lowpaymentfee.com
- —Site-wide pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The /api/v1/ehr/73 path does not appear in the provider's listed API cataloghttps://lowpaymentfee.com