# Services from email-auth-check.quietworklabs.workers.dev on Zero

> email-auth-check.quietworklabs.workers.dev serves 4 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/email-auth-check.quietworklabs.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/email-auth-check.quietworklabs.workers.dev/health.json

## Services

- [Email Auth Checker](https://www.zero.xyz/c/email-auth-checker-434c3e4a/llms.txt): $0.003/call via x402. Checks a domain's full email authentication posture including SPF, DMARC, DKIM, MX, MTA-STS, TLS-RPT, BIMI, and bulk-sender readiness for Gmail/Yahoo/Outlook, plus domain expiry via RDAP
- [Email Auth Checker – SPF Lookup](https://www.zero.xyz/c/email-auth-checker-spf-lookup-ae736771/llms.txt): $0.001/call via x402. Recursively checks a domain's SPF record, counting DNS lookups against the 10-lookup limit and reporting void lookups, warnings, and qualifier details.
- [Email Auth Checker – Domain Expiry (x402)](https://www.zero.xyz/c/email-auth-checker-domain-expiry-x402-a9cfad9c/llms.txt): $0.002/call via x402. Looks up domain registration expiry, creation date, registrar, nameservers, DNSSEC status, and days-until-expiry for a given domain via RDAP.
- [Email Auth Checker – DMARC Endpoint](https://www.zero.xyz/c/email-auth-checker-dmarc-endpoint-7b936c3d/llms.txt): $0.001/call via x402. Checks a domain's DMARC record, returning policy, alignment, pct, rua/ruf tags, subdomain policy, and validity status

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)