Free Tools
Instant, no-signup checks for any domain. Run one now — then let Merlonix watch it (and every client domain) continuously, with alerts before anything breaks.
- SecuritySSL & DNS CheckerCheck any domain's SSL certificate expiry, issuer, and live DNS records instantly — free, no signup.Run the free check →
- SecuritySSL Certificate Expiry MonitorSee exactly when any domain's TLS certificate expires and how many days are left — before the 47-day certificate cliff.Run the free check →
- AI visibilityAI Agent-Readiness CheckerScan any domain for llms.txt, AI-crawler access in robots.txt, and schema.org structured data — is your site ready for answer engines?Run the free check →
- AI visibilityAI Answer-Presence CheckerEnter your brand and a buyer question — we ask the real AI answer engines live and show whether they cite you.Run the free check →
One check is a snapshot. Monitoring is the protection.
A one-time check only tells you about today. The certificate that lapses three weeks from now, the DNS record that drifts, the answer engine that stops citing you — Merlonix re-checks on a schedule and alerts you before it costs a client.