Pay-per-call employee data endpoint on Base via x402, settled in USDC at $0.02/request.
What it does
This x402-enabled endpoint at lowpaymentfee.com serves employee data (specifically record ID 18) behind a micropayment wall. It uses the x402 "exact" payment scheme on the Base network, accepting USDC (contract 0x8335…2913) with a max amount of 20,000 base units, which equals $0.02 per request (USDC has 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The hosting site lowpaymentfee.com offers a broader catalog of pay-per-call APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with the same x402 payment model on Base.
Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what fields the /api/v1/employees/18 endpoint actually returns. The endpoint is confirmed live (returns 402 with a valid x402 challenge), but the lack of documentation makes it difficult to know what data to expect or what request body format is needed.
Capabilities
Use cases
- —Retrieving employee record data with per-call USDC micropayments
- —Demonstrating x402 payment protocol integration on Base
- —Agent-driven data retrieval without API key management
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents that need keyless, pay-per-call data access on Base
- —Low-volume lookups where $0.02/request is acceptable
Not for
- —Production use requiring documented schemas and SLAs
- —High-volume bulk employee data retrieval
- —Users without USDC on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/employees/18 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing, but there is zero documentation on request format, response schema, or what employee data is returned. Docs pages are empty. No OpenAPI spec or examples exist.
Warnings
- —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
- —No OpenAPI or JSON schema describing request or response format
- —Unknown what fields or data the /employees/18 endpoint actually returns
- —Single hardcoded employee ID (18) — unclear if other IDs are supported
- —Provider site appears to be a demo or early-stage project
Citations
- —Endpoint returns 402 with x402 challenge accepting USDC on Base at maxAmountRequired 20000 (=$0.02)https://lowpaymentfee.com/api/v1/employees/18
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/employees/18
- —Site lists all endpoints at $0.02/request with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Docs, pricing, API, and README pages render only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs