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/53` 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/53` is labeled "Premium API Access" in the x402 challenge but its exact data payload is unclear — the "ehr" path segment suggests Electronic Health Records, though the provider's landing page does not list this endpoint among its documented API categories (Data & Analytics, AI & ML, Finance & Web3, Infrastructure). The endpoint is live and returns a valid x402 challenge on POST.
Pricing is $0.02 per request (maxAmountRequired of 20,000 base units of USDC, which has 6 decimals = $0.02). Payment is made via the x402 exact scheme on Base to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, with a 300-second timeout. The platform advertises no API keys, no rate limits, and instant access.
Documentation is extremely sparse. The docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no additional content. There is no OpenAPI spec, no request/response schema, and no description of what data this particular endpoint returns. The "ehr/53" path is not mentioned anywhere on the site's landing page, making it difficult to determine the actual functionality without making a paid request.
Capabilities
Use cases
- —Retrieving health record data (EHR) for record ID 53 via a single paid API call
- —Integrating pay-per-request health data into agent workflows without managing API keys
- —Programmatic access to EHR data settled on-chain via USDC on Base
Fit
Best for
- —Agents or developers needing on-demand EHR data without subscription commitments
- —x402-compatible wallets and agent frameworks on Base
- —Low-volume, pay-as-you-go health data retrieval
Not for
- —High-volume bulk EHR data extraction (no documented batch endpoints)
- —Users who need detailed API documentation or response schemas before purchasing
- —Applications requiring HIPAA-compliant audit trails (no compliance documentation provided)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ehr/53 \
-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 zero documentation on what the /ehr/53 endpoint actually returns. No OpenAPI spec, no request/response schema, no examples. The endpoint path is not listed on the provider's own landing page. Effectively a stub listing.
Warnings
- —The /ehr/53 endpoint is not listed among the provider's documented APIs on the landing page — its actual functionality is unverified.
- —No request or response schema is available; the output of a paid call is unknown.
- —The 'ehr' path suggests health/medical data which may be subject to regulatory requirements (HIPAA, etc.) — no compliance documentation is provided.
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no useful content.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/ehr/53
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/ehr/53
- —The /ehr/53 endpoint is not listed among the provider's documented API categorieshttps://lowpaymentfee.com