# Services from x402-lookup-seller.fly.dev on Zero

> x402-lookup-seller.fly.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/x402-lookup-seller.fly.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402-lookup-seller.fly.dev/health.json

## Services

- [x402 Base USDC/ETH Lookup](https://www.zero.xyz/c/x402-base-usdc-eth-lookup-37cfedf0/llms.txt): $0.002/call via x402. Verifies a Base chain USDC payment transaction or checks the ETH and USDC balances of a wallet address before retrying a payment.
- [x402 Wikipedia Fact Lookup](https://www.zero.xyz/c/x402-wikipedia-fact-lookup-00170f26/llms.txt): $0.05/call via x402. Fetches a Wikipedia REST summary for a given topic, returning a concise public-web fact snippet

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)