Monitor types

For web and API endpoints — status codes, keywords, JSON paths, redirect chains.

For A, AAAA, MX, TXT, and CNAME record assertion with drift alerts.

Expiry warnings, chain validation, SAN mismatch, weak ciphers.

Port reachability and TLS handshake timing for anything non-HTTP.

Native ICMP via Go probes. Latency and packet loss for anything routable.

Dead-man-switch. Ping us every N minutes — if you stop, we page.