x402-gated HR document endpoint on Base, pay-per-request with USDC.
What it does
This endpoint at lowpaymentfee.com serves an HR document resource (document ID 23) behind an x402 paywall. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, and utility services — all settled via USDC on the Base network using the x402 protocol.
The specific endpoint `/api/v1/hr/documents/23` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (asset 0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform's landing page confirms a flat $0.02/request pricing model across all endpoints, with no API keys, no rate limits, and no minimum commitments required.
Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no explanation of what the HR documents endpoint actually returns or what input it expects. The endpoint is live (returns a proper 402 challenge), but without documentation it is difficult to know what data is served or what POST body format is expected.
Capabilities
Use cases
- —Retrieving HR document data on a per-request payment basis
- —Programmatic access to document resources without API key management
- —Agent-driven document fetching with automatic USDC micropayments
Fit
Best for
- —Agents or services that need on-demand HR document access without subscription commitments
- —Developers exploring x402 pay-per-call patterns on Base
- —Low-volume, ad-hoc document retrieval where $0.02/request is acceptable
Not for
- —High-volume bulk document retrieval where per-request fees add up
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/23 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation, no OpenAPI spec, no request/response schema, and no explanation of what the HR documents endpoint actually returns. The broader platform lists many endpoints but provides zero docs beyond a wallet-connect prompt.
Warnings
- —No API documentation available — /docs, /pricing, /api, and /README all show only 'Connect wallet'
- —No OpenAPI or schema describing request body or response format for this endpoint
- —The purpose and content of '/api/v1/hr/documents/23' is unclear — 'HR documents' is not described anywhere
- —No robots.txt or agents.txt found
- —The platform appears to be a demo or early-stage project with many listed endpoints but no substantive documentation
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/hr/documents/23
- —Platform-wide pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/hr/documents/23