Pay-per-call employee salary data endpoint on Base via x402, settled in USDC.
What it does
This x402-enabled endpoint at lowpaymentfee.com returns employee salary information for a specific employee (ID 36) via a POST request. Payment is settled on the Base network using USDC (USD Coin) at a cost of $0.02 per request. The endpoint requires no API keys, no rate limits, and provides instant access — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The hosting site lowpaymentfee.com offers a broad catalog of x402-gated APIs spanning data & analytics, AI/ML inference, finance/Web3, and infrastructure utilities, all priced uniformly at $0.02 per call. This particular endpoint sits under what appears to be a sample or demonstration HR/employee data resource. The x402 challenge was successfully captured (HTTP 402 with valid accepts payload), confirming the endpoint is live.
Documentation beyond the landing page is extremely thin — the /docs, /pricing, /api, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what fields the salary response contains. The endpoint's actual data source and accuracy are unknown.
Capabilities
Use cases
- —Retrieving salary information for a specific employee record
- —Demonstrating x402 payment-gated API access on Base
- —Integrating pay-per-call data retrieval into agent workflows
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing on-demand employee salary data without API key management
- —Low-volume, pay-as-you-go data lookups
Not for
- —Bulk payroll data exports (single-employee endpoint, no batch support evident)
- —Production HR systems requiring authenticated, auditable access controls
- —Users without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/36/salary \
-H "X-PAYMENT: <x402_payment_proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, no documentation beyond a landing page, and the actual data returned is completely undocumented. The endpoint path suggests sample/demo HR data rather than a production service.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README all return only a wallet-connect prompt with no content.
- —No OpenAPI or JSON schema describing request body or response format.
- —The endpoint targets a single hardcoded employee ID (36); unclear if other IDs are supported or what data is returned.
- —Data source and accuracy of salary information are unknown — may be synthetic/demo data.
Citations
- —Endpoint returns HTTP 402 with x402 challenge on POST, confirming it is livehttps://lowpaymentfee.com/api/v1/employees/36/salary
- —Payment is 20000 base units of USDC (6 decimals) = $0.02 on Base networkhttps://lowpaymentfee.com/api/v1/employees/36/salary
- —Site advertises $0.02/request, no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/employees/36/salary