manaflow-ai/cmux
cmux-customization
cmux customization
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cmux Core Control
cmux
End-user control of cmux topology and routing (windows, workspaces, panes/surfaces, focus, moves, reorder, identify, trigger flash). Use when automation needs deterministic placement and navigation in a multi-pane cmux layout.
SKILL.md
Full skill instructions
cmux Core Control
Use this skill to control non-browser cmux topology and routing.
Core Concepts
- Window: top-level macOS cmux window.
- Workspace: tab-like group within a window.
- Pane: split container in a workspace.
- Surface: a tab within a pane (terminal or browser panel).
Fast Start
# identify current caller context
cmux identify --json
# list topology
cmux list-windows
cmux list-workspaces
cmux list-panes
cmux list-pane-surfaces --pane pane:1
# create/focus/move
cmux new-workspace
cmux new-split right --panel pane:1
cmux move-surface --surface surface:7 --pane pane:2 --focus true
cmux split-off --surface surface:7 right
cmux reorder-surface --surface surface:7 --before surface:3
# attention cue
cmux trigger-flash --surface surface:7
Settings and Docs
Use cmux docs settings before changing cmux-owned settings. It prints the docs URL, schema URL, raw GitHub resources, cmux.json paths, and reload command.
cmux docs settings
cmux settings path
cmux-owned settings live in ~/.config/cmux/cmux.json. Legacy ~/.config/cmux/settings.json and ~/Library/Application Support/com.cmuxterm.app/settings.json files are read only as fallback for missing keys. Before editing, copy any existing cmux.json file to a timestamped .bak next to it so the user can revert. Edit the user file, then reload:
cmux reload-config
cmux reload-config reloads BOTH cmux.json and Ghostty config (~/.config/ghostty/config) and refreshes terminals in place. No app restart needed.
Use cmux settings for app behavior, sidebar, notifications, browser behavior, automation, workspace colors, and cmux-owned shortcuts. Terminal rendering settings such as font, cursor style, theme, scrollback, background transparency (background-opacity), and blur (background-blur) belong in Ghostty config at ~/.config/ghostty/config.
Open the UI when useful:
cmux settings
cmux settings cmux-json
cmux settings shortcuts
Handle Model
- Default output uses short refs:
window:N,workspace:N,pane:N,surface:N. - UUIDs are still accepted as inputs.
- Request UUID output only when needed:
--id-format uuids|both.
Deep-Dive References
| Reference | When to Use |
|---|---|
| references/handles-and-identify.md | Handle syntax, self-identify, caller targeting |
| references/windows-workspaces.md | Window/workspace lifecycle and reorder/move |
| references/panes-surfaces.md | Splits, surfaces, move/reorder, focus routing |
| references/trigger-flash-and-health.md | Flash cue and surface health checks |
| ../cmux-workspace/SKILL.md | Current caller workspace rules and non-disruptive automation |
| ../cmux-settings/SKILL.md | Safe cmux.json settings edits and validation |
| ../cmux-browser/SKILL.md | Browser automation on surface-backed webviews |
| ../cmux-markdown/SKILL.md | Markdown viewer panel with live file watching |
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