x402-gated HR document endpoint on Base, pay-per-request with USDC.
What it does
This endpoint at lowpaymentfee.com serves a specific HR document resource (`/api/v1/hr/documents/29`) behind an x402 paywall. The provider operates a broader platform offering dozens of pay-per-call API endpoints across categories including data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all settled on the Base network using USDC via the x402 protocol.
The specific endpoint probed (`/api/v1/hr/documents/29`) is live and returns a valid x402 challenge. It accepts POST requests and charges up to 20,000 base units of USDC (0.02 USD) per call, paid to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The response MIME type is `application/json`. The platform advertises no API keys, no rate limits, and instant access.
However, the crawled documentation pages (`/docs`, `/api`, `/pricing`, `/README`) all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the HR documents endpoint actually returns. The endpoint path suggests it retrieves a human-resources-related document by ID, but the exact payload structure is unknown. The broader platform lists many endpoints at $0.02 each, but this specific HR documents path is not listed on the homepage, making its purpose and data content unclear.
Capabilities
Use cases
- —Retrieving HR-related documents programmatically via a single paid API call
- —Agent-driven document access without API key registration
- —Micropayment-gated data retrieval on Base L2
Fit
Best for
- —Agents needing keyless, pay-per-use document access
- —Developers experimenting with x402 payment flows on Base
- —Automated workflows requiring on-demand HR document fetching
Not for
- —Users who need detailed API documentation or schema guarantees before integrating
- —Bulk document retrieval at scale (no documented batch endpoints)
- —Anyone needing non-USDC or non-Base payment options
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/29 \
-H "X-PAYMENT: <x402_payment_token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the HR documents path is not even listed on the provider's homepage. The purpose and data content of this specific endpoint are entirely unclear.
Warnings
- —No OpenAPI schema or endpoint documentation available
- —The /api/v1/hr/documents/29 path is not listed among the provider's advertised endpoints on the homepage
- —All documentation pages (/docs, /api, /pricing, /README) returned only a 'Connect wallet' prompt with no content
- —Request body schema and response schema are completely unknown
- —The nature and source of the 'HR document' data is undisclosed
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/hr/documents/29
- —The platform advertises $0.02 per request, no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —Documentation pages return only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs