x402-gated employee salary data endpoint on Base, pay-per-request with USDC.
What it does
This endpoint at lowpaymentfee.com provides access to employee salary data (specifically employee ID 190) via the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum cost of $0.02 per request (20,000 base units at 6 decimals).
The endpoint is part of a broader lowpaymentfee.com platform that advertises multiple API categories including data & analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all at a flat $0.02 per call. The platform emphasizes no API keys, no rate limits, and instant access via x402 payment headers. However, documentation is extremely thin: the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no substantive content.
The specific endpoint path (`/api/v1/employees/190/salary`) is not listed on the homepage's catalog of available APIs, which raises questions about whether this is a demo/test endpoint or a production resource. No input schema, request parameters, or response format documentation is available. The endpoint is confirmed live (returns a proper 402 challenge), but the actual data returned after payment is unknown.
Capabilities
Use cases
- —Retrieving salary information for a specific employee record
- —Demonstrating x402 payment protocol integration
- —Testing pay-per-call API patterns on Base network
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing on-demand salary data lookups
- —Projects exploring crypto-micropayment-gated APIs
Not for
- —Bulk payroll data exports (single-employee endpoint, no batch support documented)
- —Users without USDC on Base network
- —Production HR systems requiring documented SLAs and schemas
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/190/salary \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation for request parameters, response schema, or what data is actually returned. The endpoint path is not listed in the provider's own catalog. Docs pages are empty beyond a wallet connect prompt.
Warnings
- —No request or response schema documented — actual payload structure is unknown
- —Endpoint path /api/v1/employees/190/salary is not listed on the provider's homepage catalog of APIs
- —All documentation pages (/docs, /pricing, /README, /api) render only 'Connect wallet' with no content
- —Unknown whether this is a demo/test endpoint or a production data source
- —No information on data source, accuracy, or freshness of salary data
Citations
- —The endpoint returns a 402 challenge with x402Version 1, accepting USDC on Base network with maxAmountRequired of 20000 base unitshttps://lowpaymentfee.com/api/v1/employees/190/salary
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/employees/190/salary