Pay-per-call employee salary data endpoint on Base via x402 (USDC).
What it does
This x402-enabled endpoint at lowpaymentfee.com returns employee salary data for a specific employee (ID 40) via a POST request. It is part of a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all settled on the Base network using USDC.
The endpoint charges a maximum of $0.02 per request (20,000 base units of USDC with 6 decimals). Payment is handled inline via the x402 protocol: callers receive a 402 challenge with payment parameters, construct a signed USDC payment on Base, and attach it in the X-PAYMENT header. No API keys, subscriptions, or rate limits are advertised — access is purely transactional.
The specific resource path (`/api/v1/employees/40/salary`) suggests a demo or sample HR/payroll data endpoint. The platform's landing page does not list this particular endpoint among its featured APIs, so it may be an unlisted or example route. Documentation pages (docs, pricing, README) returned only a "Connect wallet" prompt with no additional technical detail, so the request/response schema is unknown beyond the x402 challenge metadata indicating it accepts HTTP POST and returns application/json.
Capabilities
Use cases
- —Retrieving employee salary information programmatically
- —Demonstrating x402 pay-per-call payment flows on Base
- —Integrating payroll data lookups into agent workflows
Fit
Best for
- —Developers experimenting with x402 micropayment protocols
- —Agents needing on-demand salary data without API key management
- —Low-volume, pay-as-you-go data retrieval
Not for
- —Bulk payroll data exports requiring thousands of records at once
- —Users who need detailed API documentation and request/response schemas before integrating
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/40/salary \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <signed-x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02/request in USDC on Base). However, there is no documentation for this specific endpoint's request body or response schema, no OpenAPI spec, and the docs/pricing/README pages are empty beyond a wallet-connect prompt. The endpoint path appears to be a demo or unlisted route not featured on the landing page.
Warnings
- —No request or response schema available — input format and output fields are unknown.
- —Documentation pages (/docs, /pricing, /README) contain no useful content beyond 'Connect wallet'.
- —This specific endpoint (/api/v1/employees/40/salary) is not listed among the platform's advertised APIs — it may be a demo or test route.
- —The nature and source of the employee salary data is unclear; it could be synthetic/demo data.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network.https://lowpaymentfee.com/api/v1/employees/40/salary
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is the canonical USDC contract on Base.https://lowpaymentfee.com/api/v1/employees/40/salary