x402-gated HR document endpoint on Base, pay-per-request with USDC.
What it does
This endpoint at `/api/v1/hr/documents/28` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-call APIs spanning data analytics, AI/ML, finance, infrastructure, and more. The specific resource appears to serve an HR document (document ID 28) behind an x402 paywall. Payment is settled in USDC on the Base network using the "exact" scheme, with a maximum cost of $0.02 per request (20,000 base units at 6 decimals). The endpoint accepts POST requests and returns `application/json`.
The broader lowpaymentfee.com platform advertises a uniform $0.02/request pricing model across all its endpoints, with no API keys, no rate limits, and no minimum commitments required. The x402 challenge was successfully captured (HTTP 402), confirming the endpoint is live. However, there is no OpenAPI schema, no detailed documentation about request parameters or response structure, and no information about what the HR document actually contains. The `/api`, `/pricing`, and `/README` pages all returned only a "Connect wallet" prompt with no substantive content.
Without documentation on the expected POST body or the shape of the response, callers will need to experiment or contact the provider to understand what data this endpoint returns. The "HR documents" category is not listed on the provider's main landing page among its advertised API categories, making this endpoint's purpose and content unclear.
Capabilities
Use cases
- —Retrieving a specific HR document (ID 28) via a single paid API call
- —Demonstrating x402 protocol micropayment flows for document access
- —Programmatic document retrieval without API key management
Fit
Best for
- —Agents or developers experimenting with x402 pay-per-call protocols
- —Accessing documents without traditional API key registration
- —Low-cost, one-off document retrieval on Base network
Not for
- —Bulk document retrieval or batch processing (no documented batch endpoints)
- —Users who need detailed schema documentation before integrating
- —Non-crypto users who cannot settle payments in USDC on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/28 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation on request parameters, response schema, or what the HR document contains. The endpoint path (/hr/documents/28) is not listed among the provider's advertised APIs, and all doc pages returned only 'Connect wallet' with no content.
Warnings
- —No OpenAPI schema or request/response documentation available
- —The /hr/documents/ path is not listed among the provider's advertised API categories — purpose and content are unclear
- —All documentation pages (/api, /pricing, /README) returned only a 'Connect wallet' prompt with no useful information
- —No information about what 'HR document 28' contains or what POST body is expected
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/hr/documents/28
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/hr/documents/28