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 193) via a POST request. It is part of a broader platform offering dozens of pay-per-call API endpoints across data/analytics, AI/ML, finance/Web3, and infrastructure categories, all settled on the Base network using USDC.
The endpoint uses the x402 payment protocol with the "exact" scheme. The maximum amount required per call is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is made via the X-PAYMENT header, and the endpoint responds with application/json. No API keys or rate limits are advertised; access is instant once payment is included.
Documentation is extremely sparse. The landing page lists available endpoints and pricing, but the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples. The specific data returned by the /employees/193/salary endpoint is unknown beyond the MIME type. The endpoint is confirmed live (402 challenge captured).
Capabilities
Use cases
- —Retrieving salary information for employee ID 193 via a single paid API call
- —Demonstrating x402 payment protocol integration for pay-per-call data access
- —Building automated payroll or HR data pipelines that settle in USDC on Base
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing on-demand employee salary data without API key registration
- —Crypto-native applications that can pay per request in USDC on Base
Not for
- —Bulk employee data retrieval (only one employee ID exposed at this URL)
- —Users who need detailed API documentation or request/response schemas before integrating
- —Non-crypto users who cannot send USDC payments on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/193/salary \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page, and no examples. The specific data returned is entirely unknown. This is effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — request body and response format are unknown
- —All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content
- —The endpoint is for a single hardcoded employee ID (193); unclear if other employee IDs are available at different URLs
- —No information on what salary data fields are returned
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/employees/193/salary
- —The platform advertises $0.02 per request, no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/employees/193/salary