# Services from x402.momentbolt.com on Zero

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

## Services

- [402 Guard — Domain Audit](https://www.zero.xyz/c/402-guard-domain-audit-92ecc49c/llms.txt): $0.002/call via x402. Audits a domain's live DNS and email-security posture (SPF, DMARC, DNSSEC, MX) and returns a graded security score, paid via tiny USDC microtransaction on Base.
- [402 Guard — x402 Payment Requirement Linter](https://www.zero.xyz/c/402-guard-x402-payment-requirement-linter-69334ad5/llms.txt): $0.001/call via x402. Validates x402 v2 PaymentRequired envelopes against caller policy rules, returning a structured lint report with errors, warnings, risk score, and a pass/fail verdict.

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)