When to use Edge Bar
Use Edge Bar when:- You want a mouse-driven way to open QuickHub or start a meeting from any app
- You work across multiple monitors and want edge triggers on outer (or all inner) edges
- You run Computer Use in the background and want session status, stop controls, and Watch preview nearby
- You prefer dragging files onto the edge launcher instead of into a floating QuickHub window
How Edge Bar appears
- Enable at least one edge under Settings → General → Edge Bar
- Move your pointer to that inner screen edge (the edge of the display, not the notch)
- The launcher reveals as you approach — closer to the edge means more visible
- Click an icon to run that action
- Drag the bar vertically along the edge to reposition it; Alter remembers the position per edge and per monitor
Edge Bar actions
When no meeting is recording, the launcher shows these actions (top to bottom):| Action | What it does |
|---|---|
| Start Meeting | Begin meeting recording with microphone and system audio |
| Summarize Video | Summarize the active browser video (shown when a supported page is detected) |
| Open QuickHub | Open the floating QuickHub window |
| New Chat | Start a fresh QuickHub conversation |
| Attach | Attach QuickHub to the side of the frontmost app |
Computer Use sessions
When a Computer Use task runs in the background, an Edge Bar session card appears alongside the launcher. Each card shows:- The task goal (truncated; hover for the full text)
- Status — what the agent is doing (reading accessibility trees, clicking, scrolling, and so on)
- Target app — icon, name, and window title once bound
- Stop — cancel the run immediately
Drop target
While the Edge Bar is visible, you can drag and drop onto it — the same content types QuickHub accepts (files, text, URLs, and other supported pasteboard items). Alter routes dropped items into the active or new QuickHub conversation, similar to dropping onto the QuickHub window itself.Configure Edge Bar
Open Settings → General (⌘,) and scroll to the Edge Bar section. All controls are disabled when QuickHub Mode is off.Left edge / Right edge
Toggle Left edge and Right edge independently. Defaults: Right edge on, Left edge off.All monitor edges
All monitor edges — Use selected left/right edges on every monitor, including edges between displays. When off (default), only outer edges on a multi-monitor setup are eligible. When on, every enabled edge on every connected display can reveal the launcher.Opening distance
Opening distance — 0% sticks to the edge; 100% uses the default distance. A slider from 0% to 100% in 25% steps controls how far from the edge the launcher begins to reveal:- 0% — You must push the pointer against the physical edge; the bar stays tight to the bezel
- 100% (default) — Standard reveal distance; the launcher appears before you reach the absolute edge
- Intermediate values (25%, 50%, 75%) blend between those extremes
Troubleshooting
Edge Bar never appears- Confirm QuickHub Mode is on (Settings → General → QuickHub Mode)
- Enable at least Left edge or Right edge
- On multiple monitors without All monitor edges, try the outer left or right edge of your display group
- Check that another app is not capturing mouse events at the screen edge
- Enable All monitor edges if you need inner edges between displays
- Reposition the bar by dragging it vertically on the edge where you want it; positions are saved per monitor
- Edge Bar sessions require QuickHub Mode and an active
computer_use_taskrun - Open Watch preview from the Tool Inspector if the floating preview is hidden
- Edge Bar requires QuickHub Mode. The footer reads: Edge Bar requires QuickHub Mode to be enabled.
Related docs
QuickHub Mode
Default interface, attach/detach, and shortcuts
Background Computer Use
Edge Bar session cards and live preview
General settings
QuickHub Mode and Edge Bar toggles
Window types
QuickHub, Hub, and panel overview