x402-gated employee salary 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 23) via an x402 payment-gated POST request. The endpoint is live and returns a standard x402 challenge requiring payment in USDC on the Base network. The cost per request is $0.02 (20,000 base units of USDC with 6 decimals). No API keys or rate limits are required; access is granted purely through on-chain micropayment.
The endpoint is part of a broader platform (lowpaymentfee.com) that offers numerous x402-gated APIs across categories including data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced at $0.02 per request. However, the specific endpoint being listed here (`/api/v1/employees/23/salary`) is not documented on the provider's landing page among the advertised API categories. Its purpose appears to be returning salary information for a specific employee record, but no schema documentation, example responses, or detailed descriptions are available beyond the generic "Premium API Access" label.
Payment is settled on the Base L2 network to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The x402 challenge specifies a maximum timeout of 300 seconds and uses the "exact" payment scheme.
Capabilities
Use cases
- —Retrieving salary data for employee records via micropayment
- —Demonstrating x402 payment protocol integration
- —Building payroll or HR data pipelines with per-request billing
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing on-demand employee salary lookups without API key management
- —Applications requiring pay-per-use data access on Base network
Not for
- —Bulk payroll data exports (single-employee endpoint, no batch support documented)
- —Production HR systems requiring authenticated, auditable access controls beyond payment
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/23/salary \
-H "X-PAYMENT: <x402-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, this specific endpoint is not listed among the provider's documented APIs, there is no OpenAPI schema, no example request/response, and the docs/pricing/README pages all render only a 'Connect wallet' prompt with no useful content. The purpose and response format are unknown.
Warnings
- —This specific endpoint (/api/v1/employees/23/salary) is not listed among the provider's advertised APIs on the landing page — it may be a demo, test, or undocumented endpoint.
- —No response schema or example output is available; the actual data returned is unknown.
- —Documentation pages (/docs, /pricing, /README) contain no useful content beyond 'Connect wallet'.
- —The endpoint appears to be hardcoded to employee ID 23; parameterization for other employees is unconfirmed.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 in USDC on Base networkhttps://lowpaymentfee.com/api/v1/employees/23/salary
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/employees/23/salary
- —The provider lists APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categories but does not list this employee salary endpointhttps://lowpaymentfee.com