Machine
How hard your PC is working, and every Claude Code session running on it.
On a Mac the page says machine health isn't available yet.


When it warns you
| What | High | Critical |
|---|---|---|
| Memory | 85% used | 93% used |
| Disk | under 10 GB free | under 3 GB free |
| CPU | 90% for 2 minutes | – |
| Claude sessions | more than 6 | – |
You can change these in Settings. When something is high, the Machine menu item gets a badge.

Claude sessions
Every running Claude Code session, where it runs (ratchet, Windows Terminal, VS Code and others), its memory and CPU. Close ends a session. You can pick it up again later with resume.
When ratchet starts, it ends Claude processes left behind by agents it started whose window has gone. There's nothing to press.
If your PC restarted unexpectedly, a banner says when, with Show on chart.