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 data for a specific employee (ID 135) 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 x402 payment header with each request.
The hosting site lowpaymentfee.com offers a broad catalog of pay-per-call APIs spanning data & analytics, AI/ML inference, finance & Web3, and infrastructure utilities, all priced at $0.02 per request. This particular endpoint falls under what appears to be a demo or sample HR/payroll data resource. The x402 challenge was successfully captured, confirming the endpoint is live and accepting payment via the "exact" scheme on Base mainnet to the specified payTo address.
Documentation is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The actual structure of the POST body and the response format must be discovered experimentally. Given the endpoint path pattern (`/employees/{id}/salary`), it likely returns salary information for the given employee ID, but the exact fields are unknown.
Capabilities
Use cases
- —Retrieving salary data for a specific employee on demand
- —Demonstrating x402 payment-gated API access patterns
- —Integrating pay-per-call HR data into agent workflows
Fit
Best for
- —Developers experimenting with x402 payment protocols
- —Agents needing on-demand employee compensation data
- —Projects requiring no-signup, pay-as-you-go API access
Not for
- —Bulk payroll data exports (single-employee endpoint, no batch support evident)
- —Users without USDC on Base network
- —Production HR systems requiring documented, stable schemas
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/135/salary \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The endpoint path suggests employee salary data but nothing is verified beyond the x402 challenge. Effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available
- —No example request or response payloads — response format is unknown
- —Docs, pricing, API, and README pages all render only 'Connect wallet' with no content
- —The specific endpoint (/employees/135/salary) is not listed on the site's own API catalog — may be a demo or undocumented resource
- —Actual data returned is unverified; could be synthetic or placeholder
Citations
- —Endpoint returns HTTP 402 with x402 challenge, confirming it is livehttps://lowpaymentfee.com/api/v1/employees/135/salary
- —Payment is 20000 base units of USDC (6 decimals) = $0.02 on Base networkhttps://lowpaymentfee.com/api/v1/employees/135/salary
- —Site advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/employees/135/salary