# Services from x402-tollbooth.onrender.com on Zero

> x402-tollbooth.onrender.com 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-tollbooth.onrender.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402-tollbooth.onrender.com/health.json

## Services

- [Domain Trust Assessment API](https://www.zero.xyz/c/domain-trust-assessment-api-b4b7f0ab/llms.txt): $0.01/call via x402. Checks whether a domain, URL, or email address is trustworthy by analyzing DNS health, domain age, registrar data, and spam/disposable-provider flags, returning a trust verdict with reasons.
- [x402-tollbooth Email Verifier](https://www.zero.xyz/c/x402-tollbooth-email-verifier-f8327617/llms.txt): $0.005/call via x402. Validates up to 25 email addresses per call by checking syntax, domain MX/A records, disposable-domain status, and role-account flags — without SMTP mailbox probing.

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)