# Services from x402check.arden-instance.workers.dev on Zero

> x402check.arden-instance.workers.dev serves 2 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/x402check.arden-instance.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402check.arden-instance.workers.dev/health.json

## Services

- [x402check Conformance Pre-flight Check](https://www.zero.xyz/c/x402check-conformance-pre-flight-check-102c3133/llms.txt): $0.002/call via x402. Validates whether a given x402-enabled endpoint correctly implements the 402 payment challenge protocol before committing a real payment.
- [x402check Base Gas Price Lookup](https://www.zero.xyz/c/x402check-base-gas-price-lookup-049377f7/llms.txt): $0.002/call via x402. Returns current gas price data for the Base mainnet blockchain via a metered, pay-per-call x402 endpoint.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)