FAQ

Is it free? Yes, MIT licensed.

Does anything leave my machine? No. No telemetry, no account, no CDN. It connects outward only to the servers and services you add.

Do I install anything on my servers? No. It reads /proc, df, ss and similar over SSH.

Which servers are supported? Linux (any distribution with /proc and a POSIX shell; Alpine and Raspberry Pi OS included). The app itself runs on Windows, macOS and Linux.

Is it a replacement for Prometheus or Grafana? No. It is a live, spatial view of your fleet with diagnosis, a terminal and AI tools. It keeps days of history, not months of metrics.

How many servers? Designed for 60 fps with 50 buildings on integrated graphics, and it stays usable at several hundred (lite mode helps).

Can my team use it? Each person runs their own instance; it is single-user and local by design.

Can AI agents break things? Only through run_command, and every command waits for your click.

Where are my passwords? Encrypted in the local database; see Security.

Can I edit the YAML files by hand? Yes; the app reloads them live and keeps your comments when it writes them.

Why a city? Because you remember where things are. A list resorts itself; a city stays put, so a change of light is the first thing you notice.