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 21) 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/21` 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, /api, /pricing, 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 description of what the HR document endpoint actually returns. The endpoint is live (returns a proper 402 challenge), but without documentation it is unclear what input the POST body expects or what shape the response takes. The "HR documents" category is not listed on the homepage's API catalog, making this endpoint's purpose and content ambiguous.
Capabilities
Use cases
- —Retrieving HR document data via a single micropayment
- —Programmatic access to document resources without API key management
- —Agent-driven document fetching with on-chain USDC settlement
Fit
Best for
- —Developers wanting keyless, pay-per-use document access
- —AI agents that can settle x402 payments on Base
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Anyone needing detailed API documentation or request/response schemas before integrating
- —Bulk document retrieval at scale (no documented batch endpoints)
- —Users without USDC on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/21 \
-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 zero documentation on what the endpoint accepts or returns. No OpenAPI spec, no examples, no description of the HR document content. The docs pages are empty. This is effectively a stub listing.
Warnings
- —No API documentation available — /docs, /api, /pricing, and /README pages all show only 'Connect wallet' with no content.
- —No OpenAPI or schema definition found for request or response payloads.
- —The /api/v1/hr/documents/21 path is not listed among the homepage's advertised API categories, making its purpose unclear.
- —Unknown what input the POST body expects or what the response contains.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network.https://lowpaymentfee.com/api/v1/hr/documents/21
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/hr/documents/21