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 5) behind an x402 paywall. It is part of a broader platform that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, and utility services — all settled on the Base network using USDC.
The specific endpoint `/api/v1/hr/documents/5` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base), which equals $0.02 per request — consistent with the platform's uniform $0.02/request pricing. Payment is made via the x402 "exact" scheme directly to the provider's wallet. No API keys are required; access is granted purely through on-chain payment.
Documentation is extremely sparse. The crawled docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no description of request parameters, and no sample responses for this or any other endpoint. The endpoint category ("HR documents") is not listed on the homepage, which raises questions about what data is actually returned. The platform appears to be a demonstration or early-stage x402 marketplace rather than a mature production API.
Capabilities
Use cases
- —Retrieving HR document data via a single micropayment
- —Testing x402 payment protocol integrations
- —Demonstrating pay-per-request API access without API keys
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents that need keyless, pay-per-call API access
- —Testing micropayment flows on Base network
Not for
- —Production HR document management (no schema or docs available)
- —Users who need detailed API documentation before integrating
- —High-volume bulk document retrieval (no documented batch support)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/5 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation, no OpenAPI schema, no request/response examples, and the HR documents category is not even listed on the provider's homepage. Effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, and README pages all render only 'Connect wallet'
- —No OpenAPI or request/response schema provided for this endpoint
- —The '/api/v1/hr/documents/5' path is not listed among the provider's advertised API categories on the homepage
- —Unknown what data this endpoint actually returns — 'HR documents' is not described anywhere
- —Platform may be a demo or early-stage project rather than a production service
Citations
- —The x402 challenge advertises maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/hr/documents/5
- —The platform advertises uniform $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/hr/documents/5
- —Docs, API, pricing, and README pages render only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs