Pay-per-call employee salary data endpoint on Base via x402, settled in USDC.
What it does
This x402-enabled endpoint at lowpaymentfee.com provides access to employee salary data via a simple POST request. The specific resource `/api/v1/employees/21/salary` returns salary information for employee ID 21 in JSON format. Payment is handled inline using the x402 protocol on the Base network, settling in USDC (contract 0x8335…2913) with no API keys, accounts, or rate limits required.
The endpoint charges a maximum of 20,000 base units of USDC per request. Since USDC uses 6 decimals, this equates to $0.02 per call, consistent with the provider's site-wide flat pricing of $0.02/request across all their API offerings. The x402 challenge was successfully captured with version 1 of the protocol, a 300-second payment timeout, and the "exact" payment scheme.
The provider (lowpaymentfee.com) hosts a broader catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all at the same $0.02 price point and all using x402 on Base. 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 spec, no request/response schema documentation, and no example payloads available, so the exact request body format and response structure for this employee salary endpoint are unknown.
Capabilities
Use cases
- —Retrieving salary information for a specific employee on demand
- —Integrating employee compensation data into payroll or HR dashboards
- —Agent-driven lookups of salary records without pre-registration
Fit
Best for
- —Developers needing quick, keyless access to employee salary data
- —AI agents that can settle x402 payments on Base in USDC
- —Prototyping pay-per-call data access without subscription commitments
Not for
- —Bulk payroll data exports (single-employee endpoint, no batch support documented)
- —Users who cannot transact in USDC on the Base network
- —Production HR systems requiring documented SLAs and detailed API specs
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/21/salary \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02/request in USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page, and no examples. The endpoint's actual data content and input format are entirely unknown.
Warnings
- —No OpenAPI or schema documentation available — request body format and response structure are unknown
- —All documentation pages (/docs, /pricing, /api, /README) returned only 'Connect wallet' with no content
- —The endpoint path suggests employee salary data, which may involve sensitive/regulated PII — verify compliance requirements
- —Cannot confirm what data is actually returned without making a paid request
Citations
- —The endpoint returns HTTP 402 with an x402 v1 challenge advertising USDC on Base at 20,000 base units (~$0.02)https://lowpaymentfee.com/api/v1/employees/21/salary
- —Site-wide pricing is $0.02 per request with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/employees/21/salary