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/46` is part of the lowpaymentfee.com platform, which offers a broad catalog of x402-protocol pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. The specific resource at path `/ehr/46` is labeled "Premium API Access" but its exact functionality is unclear — the "ehr" path segment suggests Electronic Health Records, though no documentation confirms what data or service this particular endpoint returns.
The endpoint is live and responds with a valid x402 challenge on POST. Payment is settled on the Base network using USDC (contract `0x8335…2913`) with a maximum amount of 20,000 base units, which at 6 decimals equals $0.02 per request. The platform advertises uniform $0.02/request pricing across all endpoints, no API keys, no rate limits, and instant access. There is no OpenAPI schema, no detailed documentation, and no example request/response payloads available — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content.
Because the endpoint path and description are generic ("Premium API Access") and the crawled documentation is essentially empty, the actual input format and response schema are unknown. Agents should treat this as a stub listing until the provider publishes proper documentation.
Capabilities
Use cases
- —Retrieving health record data (EHR) via a single paid API call
- —Programmatic access to premium data without managing API keys or subscriptions
- —Agent-driven data retrieval with automatic USDC micropayments on Base
Fit
Best for
- —Developers or agents needing key-less, pay-per-use API access
- —x402-compatible agents that can settle USDC payments on Base
- —Low-volume or exploratory access where $0.02/request is acceptable
Not for
- —Production health-data workflows requiring documented schemas and compliance guarantees
- —High-volume bulk data retrieval where per-request pricing adds up
- —Users who need detailed API documentation or SLAs before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ehr/46 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI schema, no documentation, no example requests or responses, and the endpoint's purpose ("ehr/46") is ambiguous. The crawled docs pages are empty beyond a wallet-connect prompt. This is effectively a stub.
Warnings
- —No documentation available — docs, pricing, and API pages only show 'Connect wallet'
- —Endpoint path suggests Electronic Health Records (EHR) which may be a regulated data category; no compliance or data-source information is provided
- —No input or output schema is published; request format is unknown
- —The 'Premium API Access' description is generic and does not explain what the endpoint returns
- —No OpenAPI spec or ai-plugin manifest found
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/ehr/46
- —Platform advertises $0.02/request pricing, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/ehr/46
- —Docs, pricing, API, and README pages render only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs