x402-gated HR document endpoint on Base, pay-per-request with USDC.
What it does
This endpoint at `/api/v1/hr/documents/33` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML, finance, infrastructure utilities, and more. The specific resource appears to serve an HR document (document ID 33) behind an x402 paywall. Payment is settled in USDC on the Base network at $0.02 per request.
The platform advertises a simple pricing model: $0.02 per request across all endpoints, with no API keys, no rate limits, no minimums, and instant access. The x402 challenge confirms the endpoint is live and accepts the "exact" payment scheme on Base, paying to address `0x1A2B...85F3` using the USDC contract (`0x8335...2913`). The `maxAmountRequired` of 20000 base units (USDC has 6 decimals) equals $0.02, consistent with the site's advertised pricing.
Note that this specific endpoint (`/hr/documents/33`) is not listed among the publicly advertised API categories on the landing page (which covers analytics, AI, finance, and utilities). It is unclear what data the HR document endpoint returns — no schema, example response, or documentation is available for this resource. The broader platform lacks OpenAPI specs, detailed docs, and example payloads, making integration largely trial-and-error.
Capabilities
Use cases
- —Retrieving HR document data behind a micropayment wall
- —Programmatic access to document resources without API key management
- —Agent-driven document fetching with per-request USDC payment
Fit
Best for
- —Agents or services that need on-demand document access with crypto micropayments
- —Developers exploring x402 protocol integrations on Base
- —Use cases where no-signup, pay-as-you-go access is preferred
Not for
- —Users needing well-documented, schema-validated API contracts
- —Bulk document retrieval where per-request pricing is inefficient
- —Non-crypto workflows that require traditional billing
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/33 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, this specific HR document endpoint is not listed on the site's public catalog, there is no OpenAPI spec, no request/response schema, no documentation, and no example payloads. The purpose and content of the returned document are unknown.
Warnings
- —Endpoint /api/v1/hr/documents/33 is not listed among the publicly advertised APIs on the landing page — its purpose and data content are unclear.
- —No OpenAPI specification, request schema, or response schema is available.
- —No documentation or examples exist for this specific resource.
- —The broader platform pages (/api, /pricing, /README) returned only 'Connect wallet' with no useful content.
Citations
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on the Base network.https://lowpaymentfee.com
- —The x402 challenge returns maxAmountRequired of 20000 base units in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02.https://lowpaymentfee.com/api/v1/hr/documents/33
- —The endpoint is live and returns a 402 challenge with x402Version 1 and scheme 'exact'.https://lowpaymentfee.com/api/v1/hr/documents/33