# Konfiguration

cmux liest die Konfiguration aus Ghostty-Konfigurationsdateien, was Ihnen vertraute Optionen bietet, wenn Sie von Ghostty kommen.

## Speicherorte der Konfigurationsdatei

cmux sucht an diesen Speicherorten nach Konfiguration (in dieser Reihenfolge):

1.  `~/.config/ghostty/config`
2.  `~/Library/Application Support/com.mitchellh.ghostty/config`

Erstellen Sie die Konfigurationsdatei, falls sie nicht existiert:

```
mkdir -p ~/.config/ghostty
touch ~/.config/ghostty/config
```

## Beispielkonfiguration

~/.config/ghostty/config

```
font-family = SF Mono
font-size = 13
sidebar-font-size = 14
surface-tab-bar-font-size = 11
theme = One Dark
scrollback-limit = 50000000
split-divider-color = #3e4451
working-directory = ~/code
```

## cmux.json

cmux keeps app-owned settings, shortcuts, actions, custom commands, and workspace layouts in `~/.config/cmux/cmux.json`. Terminal rendering still lives in Ghostty config. On launch, if the file is missing, cmux writes a commented template there.

Open cmux Settings, then use the `cmux.json` section to open the canonical file in your preferred text editor.

1.  `~/.config/cmux/cmux.json`
2.  `.cmux/cmux.json` in a project for project-scoped actions and workspace commands

**Precedence:** global `~/.config/cmux/cmux.json` settings override values saved in the Settings window. Legacy `~/.config/cmux/settings.json` and Application Support settings files are read only as fallback for missing settings keys. Project-local `.cmux/cmux.json` can override actions, commands, UI action wiring, and notification hooks, but not global app preferences.

**Reload:** edit the file, then use `Cmd+Shift+,` or `cmux reload-config` to re-read it without restarting the app.

**Migrations:** keep `schemaVersion` at `1` for now. Future cmux versions will use that field for upgrades. If cmux sees a newer schema version, it logs a warning and parses known keys only.

The file accepts JSON with comments and trailing commas. The canonical schema is published at [https://raw.githubusercontent.com/manaflow-ai/cmux/main/web/data/cmux.schema.json](https://raw.githubusercontent.com/manaflow-ai/cmux/main/web/data/cmux.schema.json) and the source lives at [https://github.com/manaflow-ai/cmux/blob/main/web/data/cmux.schema.json](https://github.com/manaflow-ai/cmux/blob/main/web/data/cmux.schema.json).

~/.config/cmux/cmux.json

```
{
  "$schema": "https://raw.githubusercontent.com/manaflow-ai/cmux/main/web/data/cmux.schema.json",
  "schemaVersion": 1,

  // "app": {
  //   "appearance": "dark",
  //   "menuBarOnly": false,
  //   "newWorkspacePlacement": "afterCurrent",
  //   "windowTitleTemplate": "[cmux:{windowToken}] {activeWorkspace}",
  //   "paneResizeStepPixels": 20,
  //   "confirmQuit": "always",
  //   "openSupportedFilesInCmux": true,
  //   "workspaceInheritWorkingDirectory": true,
  //   "iMessageMode": true
  // },

  // "terminal": {
  //   "showScrollBar": false,
  //   "copyOnSelect": true,
  //   "autoResumeAgentSessions": true,
  //   "showTextBoxOnNewTerminals": false,
  //   "focusTextBoxOnNewTerminals": false,
  //   "agentHibernation": {
  //     "enabled": false,
  //     "idleSeconds": 5,
  //     "maxLiveTerminals": 12
  //   },
  //   "textBoxMaxLines": 10
  // },

  // "browser": {
  //   "defaultSearchEngine": "kagi",
  //   // For an unlisted provider, set "defaultSearchEngine": "custom" and fill these:
  //   "customSearchEngineName": "My Search",
  //   "customSearchEngineURLTemplate": "https://search.example.com/?q={query}",
  //   "openTerminalLinksInCmuxBrowser": true,
  //   "hostsToOpenInEmbeddedBrowser": ["localhost", "*.internal.example"]
  // },

  // "markdown": {
  //   // Default body font size (points) for newly opened markdown viewers.
  //   // Zoom a viewer live with Cmd-+ / Cmd-- / Cmd-0.
  //   "fontSize": 15,
  //   // Default body font family. Empty keeps the system markdown font stack.
  //   "fontFamily": "",
  //   // Default maximum reading column width, in CSS pixels.
  //   "maxWidth": 980
  // },

  // "fileEditor": {
  //   // Wrap long lines at the editor's right edge instead of scrolling horizontally.
  //   "wordWrap": false
  // },

  // "fileExplorer": {
  //   // Doppelklick auf eine Datei: preview (Standard), defaultEditor (macOS-Standard-App) oder preferredEditor (der app.preferredEditor-Befehl).
  //   "doubleClickAction": "preview"
  // },

  // "automation": {
  //   "suppressSubagentNotifications": true
  // },

  // "workspaceColors": {
  //   "colors": {
  //     "Red": "#C0392B",
  //     "Blue": "#1565C0",
  //     "Neon Mint": "#00F5D4"
  //   }
  // },

  // "workspaceGroups": {
  //   "newWorkspacePlacement": "afterCurrent"
  // },

  // "agentChat": {
  //   "url": "http://127.0.0.1:7739",
  //   "startCommand": "cmux-chat"
  // },

  // "shortcuts": {
  //   "bindings": {
  //     "toggleSidebar": "cmd+b",
  //     "toggleFileExplorer": "cmd+opt+b",
  //     "toggleFileEditorWordWrap": "opt+z",
  //     "newTab": ["ctrl+b", "c"],
  //     "commandPalettePrevious": null
  //   }
  // },
}
```

## Schema reference

This reference covers every supported global settings key in `cmux.json`. The embedded browser, terminal, sidebar, notifications, automation, and cmux-owned keyboard shortcuts all live here. Actions and workspace commands are documented on the [custom commands page](https://cmux.com/de/docs/custom-commands).

### Metadata

`$schema`

Optional schema URL for editor completion and validation.

Type

`string`

Default

`"https://raw.githubusercontent.com/manaflow-ai/cmux/main/web/data/cmux.schema.json"`

`schemaVersion`

Schema version for forward-compatible migrations. Newer versions are parsed on a best-effort basis.

Type

`integer`

Default

`1`

### `app`

General app preferences from Settings > App.

`app.language`

Preferred app language.

Type

`string`

Default

`"system"`

Allowed values

`system, en, ar, bs, zh-Hans, zh-Hant, da, de, es, fr, it, ja, ko, nb, pl, pt-BR, ru, th, tr`

`app.appearance`

App appearance mode.

Type

`string`

Default

`"system"`

Allowed values

`system, light, dark`

`app.accentColor`

Accent for cmux-drawn chrome: the selected workspace, attention ring and pane flash, agent status, pane swap, canvas focus, and scroll markers. "cmux" uses cmux blue; "system" follows the macOS accent color and updates when it changes; a "#RRGGBB" hex uses that color in light and dark mode. workspaceColors.selectionColor and notifications.paneFlashColor still override their parts. Native controls always use the macOS accent.

Type

`string | unknown`

Default

`"cmux"`

`app.appIcon`

Dock and app switcher icon style.

Type

`string`

Default

`"automatic"`

Allowed values

`automatic, light, dark`

`app.windowTitleTemplate`

Optionale Vorlage für den NSWindow-Titel. Leer behält das bestehende Standardtitelverhalten von cmux bei, einschließlich Fallback auf das aktuelle Verzeichnis. Unterstützte Platzhalter: {windowId}, {windowToken}, {activeWorkspace}, {activeDirectory}, {defaultTitle}, {appName}.

Type

`string`

Default

`""`

`app.devWindowDisplay`

Nur in DEBUG-Builds verwendeter Anzeigename beim Öffnen neuer Fenster. Ein leerer Wert verwendet die Systemeinstellung.

Type

`string`

Default

`""`

`app.menuBarOnly`

Hide the Dock icon and app switcher entry while keeping cmux available from the menu bar.

Type

`boolean`

Default

`false`

`app.newWorkspacePlacement`

Where new workspaces are inserted in the sidebar.

Type

`string`

Default

`"afterCurrent"`

Allowed values

`top, afterCurrent, end`

`app.goToWorkspaceOrder`

Order used by Go to Workspace (Cmd-P): sidebar order, or most recently focused workspaces.

Type

`string`

Default

`"sidebar"`

Allowed values

`sidebar, recent`

`app.forkConversationDefaultDestination`

Standardziel für die primäre Fork Conversation-Aktion im Tab-Kontextmenü. Das Untermenü zeigt weiterhin alle Ziele.

Type

`string`

Default

`"right"`

Allowed values

`right, left, top, bottom, newTab, newWorkspace`

`app.workspaceInheritWorkingDirectory`

When true, new workspaces inherit the current workspace working directory. When false, new workspaces use Ghostty's working-directory setting instead.

Type

`boolean`

Default

`true`

`app.minimalMode`

Hide the workspace title bar and move controls into the sidebar.

Type

`boolean`

Default

`false`

`app.keepWorkspaceOpenWhenClosingLastSurface`

When true, closing the last surface keeps the workspace open.

Type

`boolean`

Default

`false`

`app.focusPaneOnFirstClick`

When cmux is inactive, the first click can activate and focus the clicked pane.

Type

`boolean`

Default

`false`

`app.paneResizeStepPixels`

Pixels moved per keypress when using pane-resize shortcuts. Accepts 1–200; defaults to 20. Changes apply immediately.

Type

`integer`

Default

`20`

`app.focusHistoryIncludesPanesAndTabs`

When true, Back and Forward include focus changes between panes and tabs. When false, they navigate between workspaces only.

Type

`boolean`

Default

`false`

`app.equalizeSplitsOnCreate`

When true, creating a split resizes the panes in that split's row or column to equal sizes. When false, a new split halves the pane it was created from.

Type

`boolean`

Default

`false`

`app.preferredEditor`

Custom editor command used when Cmd-click file previews are disabled or a file is unsupported. Leave empty to use the default.

Type

`string`

Default

`""`

`app.defaultWorkspacePath`

Folder the Open Folder panel starts in, for example ~/code. Supports a leading ~. Leave empty to start in the active workspace's directory.

Type

`string`

Default

`""`

`app.openSupportedFilesInCmux`

When enabled, Cmd-clicking readable local files opens supported previews in cmux, including text, code, PDFs, images, audio, video, and Quick Look files. Preview headers include an Open With menu based on the user's default and compatible macOS apps for that file.

Type

`boolean`

Default

`true`

`app.openMarkdownInCmuxViewer`

When enabled, Cmd-clicking .md/.markdown/.mkd/.mdx files opens the rendered cmux markdown viewer panel (with live reload) instead of the generic file preview.

Type

`boolean`

Default

`true`

`app.globalFontMagnification`

Prozentualer Zoom für alles, was cmux selbst zeichnet: Terminaltext, Tab-Titel, Seitenleisten, Settings, Overlays und Fensterrahmen. Webseiten in Browser-Surfaces behalten ihre eigene Größe.

Type

`integer`

Default

`100`

`app.reorderOnNotification`

Automatic workspace reordering. true or "notifications" moves workspaces with new notifications toward the top. "agentActivity" also moves them when a prompt is sent or an agent finishes a turn, needs input, or fails, at most once per burst and never while the pointer is over the sidebar. false or "off" keeps the order stable.

Type

`boolean | string`

Default

`true`

`app.iMessageMode`

Move a workspace to the top and show the submitted message when sending an agent prompt.

Type

`boolean`

Default

`false`

`app.sendAnonymousTelemetry`

Allow anonymous telemetry.

Type

`boolean`

Default

`true`

`app.confirmQuit`

Steuert, wann cmux vor dem Beenden eine Bestätigung anfordert. DEV-Builds beenden sich unabhängig von dieser Einstellung immer sofort. Das ältere app.warnBeforeQuit wird weiterhin als boolescher Fallback akzeptiert.

Type

`string`

Default

`"always"`

Allowed values

`always, dirty-only, never`

`app.warnBeforeQuit`

Älterer boolescher Fallback für die Beenden-Bestätigung. Verwenden Sie app.confirmQuit für neue Konfigurationen.

Type

`boolean`

Default

`true`

`app.warnBeforeClosingTab`

Show a confirmation before closing a tab.

Type

`boolean`

Default

`true`

`app.warnBeforeClosingAgentSession`

Show a confirmation before closing an agent session while it is mid-turn.

Type

`boolean`

Default

`true`

`app.warnBeforeClosingTabXButton`

Vor dem Schließen eines Tabs über die Tab-Schließen-Schaltfläche eine Bestätigung anzeigen.

Type

`boolean`

Default

`false`

`app.warnBeforeClosingWorkspace`

Show a confirmation before closing a workspace with a running process, or several workspaces at once. Pinned workspaces still ask when this is off.

Type

`boolean`

Default

`true`

`app.warnBeforeClosingWindow`

Show a confirmation before closing a window with a running process, or all of a window's workspaces at once.

Type

`boolean`

Default

`true`

`app.hideTabCloseButton`

Tab-Schließen-Schaltflächen in der Pane-Tableiste ausblenden.

Type

`boolean`

Default

`false`

`app.tabBarVisibility`

Legt fest, wann ein Pane seine Tableiste zeichnet. "always" zeichnet sie auch für ein Pane mit nur einem Tab; "multiple-tabs" blendet sie aus, solange ein Pane einen Tab hat, und zeichnet sie, sobald ein zweiter Tab geöffnet wird. Der minimale Modus (app.minimalMode) zeichnet sie immer, weil dort die Tableiste des obersten Pane zugleich die Titelleiste des Fensters ist.

Type

`string`

Default

`"always"`

Allowed values

`always, multiple-tabs`

`app.renameSelectsExistingName`

Select the current name when opening rename flows.

Type

`boolean`

Default

`true`

`app.commandPaletteSearchesAllSurfaces`

Search every surface in the command palette switcher instead of only the active workspace.

Type

`boolean`

Default

`false`

### `terminal`

Terminal presentation settings from Settings > Terminal.

`terminal.adaptiveDefaultTheme`

Bei true (Standard) stellt cmux eine an das Erscheinungsbild angepasste Standardpalette bereit, sofern kein Ghostty-Theme und keine Terminalfarben konfiguriert sind. Schrift- und andere Einstellungen bleiben erhalten. Bei false verwendet Ghostty seine feste integrierte Palette. Explizite Themes und Farben haben immer Vorrang, einschließlich theme = light:X,dark:Y.

Type

`boolean`

Default

`true`

`terminal.showScrollBar`

Show the right-edge terminal scroll bar when scrollback is available. cmux automatically suppresses it for alternate-screen style TUI surfaces.

Type

`boolean`

Default

`true`

`terminal.scrollSpeed`

Legt fest, wie weit sich das Terminal pro Mausrad- oder Trackpad-Scrollereignis bewegt. Werte über 1 beschleunigen das Scrollen, Werte unter 1 verlangsamen es.

Type

`number`

Default

`1`

`terminal.sessionContentMaxWidth`

Optionale maximale Breite in Punkten für Terminalinhalte und den integrierten Agentenchat. Mit false wird die gesamte Breite des Bereichs verwendet.

Type

`boolean | number`

Default

`false`

`terminal.sessionContentAlignment`

Horizontale Position von Terminalinhalten und integriertem Agentenchat, wenn sessionContentMaxWidth aktiviert ist.

Type

`string`

Default

`"center"`

Allowed values

`left, center, right`

`terminal.copyOnSelect`

Bei true wird ausgewählter Terminaltext in die Systemzwischenablage kopiert, sobald die Auswahl bestätigt wird. Bei false gibt cmux keine Ghostty-copy-on-select-Überschreibung aus; Ghostty-Konfiguration und Standardwerte steuern das Verhalten der Auswahlzwischenablage.

Type

`boolean`

Default

`false`

`terminal.showCopyConfirmation`

Briefly show "Copied to clipboard" at the bottom of a terminal after selecting text copies it. Applies whether copyOnSelect or Ghostty's copy-on-select turned copying on. Copies made with a keyboard shortcut or by a program (OSC 52) never show it.

Type

`boolean`

Default

`false`

`terminal.reflowHardWrapOnCopy`

When true, copying terminal text also joins a line that exactly fills the terminal width onto the next line, undoing hard wraps a program inserted at the grid edge. Soft-wrapped rows are always joined.

Type

`boolean`

Default

`false`

`terminal.confirmUnsafePaste`

When true, a paste that Ghostty's clipboard-paste-protection flags as unsafe (for example, text with a line break going to a program that has not enabled bracketed paste) waits for confirmation in a sheet attached to the terminal's window. When false, cmux pastes it without asking. OSC 52 clipboard reads are not affected.

Type

`boolean`

Default

`false`

`terminal.textEditingGestures`

Replay macOS text-editing gestures as line-editor keys at the shell prompt: Command and Option arrow keys move by line and word, and Command and Option Delete kill by line and word. While a full-screen application (vim, less, htop, tmux) has the terminal on the alternate screen, it gets the keys as if gestures were off, unless textEditingGesturesInFullScreenApps is on. Ghostty's own bindings still apply there, so Command+Left sends Ctrl+A and Option+Left sends Esc b.

Type

`boolean`

Default

`false`

`terminal.textEditingCommandMovesByWord`

With textEditingGestures on, switch to a browser-style layout: Command arrow and Delete keys move and delete by word, like Option, and Control+Left/Right move to the start and end of the line. Every other Control chord, including Ctrl+W and Ctrl+C, still reaches the terminal. macOS reserves Control+Left/Right for switching Spaces by default; turn those off in System Settings > Keyboard > Keyboard Shortcuts > Mission Control for Control+arrows to reach cmux.

Type

`boolean`

Default

`false`

`terminal.textEditingGesturesInFullScreenApps`

Keep textEditingGestures active while a full-screen application has the terminal on the alternate screen. tmux, screen, and zellij keep the outer terminal on the alternate screen even at their shell prompt, so turn this on to use gestures inside a multiplexer. Applications that bind the gesture chords themselves then receive the translated keys.

Type

`boolean`

Default

`false`

`terminal.showPasswordInputIndicator`

Show a lock badge in the terminal corner while the foreground program has turned echo off for a password prompt (sudo, ssh, passwd, gpg). cmux draws the badge itself and never changes terminal text. Only prompts on the local terminal are detected: an ssh password prompt counts, but sudo run inside an ssh session does not. Changes apply to an open prompt at once.

Type

`boolean`

Default

`true`

`terminal.showPasswordInputDots`

When the password input badge is shown, also draw one dot per typed character. cmux keeps only a count, never the typed characters. Backspace removes a dot; Enter or echo turning back on clears them. Pasted text is not counted.

Type

`boolean`

Default

`false`

`terminal.showJumpToBottomButton`

Removed. cmux no longer shows a Jump to Bottom button in terminal panes, and ignores this key. It stays in the schema so existing configs still validate.

Type

`boolean`

Default

`none`

`terminal.predictiveLocalEcho`

Draw typed characters immediately in a terminal whose shell runs on another machine (cmux ssh, Cloud, remote tmux) when the link is slow, underlined until the remote echo confirms them, and withdraw them if the remote disagrees. Local terminals, password prompts and full-screen apps are excluded.

Type

`boolean`

Default

`true`

`terminal.autoResumeAgentSessions`

Automatically run agent resume commands for restored terminal sessions when cmux reopens after quit. Set false to restore panes while keeping Claude Code, Codex, OpenCode, and other saved agent sessions idle until you resume them manually.

Type

`boolean`

Default

`true`

`terminal.showTextBoxOnNewTerminals`

Zeigt die TextBox-Eingabe standardmaessig fuer neu erstellte Workspaces, Terminal-Tabs und Terminal-Splits an.

Type

`boolean`

Default

`false`

`terminal.focusTextBoxOnNewTerminals`

Fokussiert die TextBox-Eingabe standardmaessig fuer neu erstellte Workspaces, Terminal-Tabs und Terminal-Splits. Fokussieren zeigt die TextBox ebenfalls an.

Type

`boolean`

Default

`false`

`terminal.agentHibernation`

Routine Agent Hibernation settings. cmux kills idle background agent processes to free RAM and CPU, then resumes them with their saved session when their tab is visited. Routine hibernation requires a restorable coding agent whose lifecycle reports idle, an off-screen terminal, a live-terminal count above the configured limit, and unchanged output through the idle and confirmation windows. Independently, under memory pressure (critical pressure from macOS or from the cmux app's own footprint, or cmux's total memory use past its aggregate warning threshold) cmux may hibernate every safe idle background agent even when enabled is false; visible, running, needs-input, recently changed, and unprotectable agents remain excluded. The placeholder Resume button is a manual fallback.

Type

`object`

Default

`none`

`terminal.rendererRealization`

Reclaim off-screen terminal GPU renderer memory. cmux releases the Metal renderer (IOSurface) of a terminal that has stayed off-screen and idle while keeping its process and terminal state alive, then rebuilds the renderer instantly when the tab is visited again. Non-destructive and on by default.

Type

`object`

Default

`none`

`terminal.titleUpdates`

Terminal title update throttling and diagnostics.

Type

`object`

Default

`none`

`terminal.runawayMemoryGuardrail`

Per-pane process-tree memory monitoring.

Type

`object`

Default

`none`

`terminal.textBoxMaxLines`

Maximum number of lines the rich terminal TextBox input can grow to before it scrolls.

Type

`integer`

Default

`10`

`terminal.textBoxDefaultSubmitAction`

Default TextBox submit action ID for new terminal sessions. Use text-entry for plain input or one of the configured action IDs.

Type

`string`

Default

`"text-entry"`

`terminal.textBoxSubmitActions`

Configurable TextBox submit actions shown on the submit button, Shift-Tab cycle, and right-click menu.

Type

`array<object>`

Default

```
[]
```

`terminal.resumeCommands`

Signed command-prefix approvals for restoring non-agent terminal surfaces. cmux writes this list when you approve a surface resume command.

Type

`array<object>`

Default

```
[]
```

`terminal.uploadCommands`

Host-scoped rules that replace the built-in scp for terminal file drops and pastes over SSH. When the ssh destination matches a rule, cmux runs that rule's command once per file instead of scp, and inserts the command's stdout at the cursor (verbatim, with control characters stripped); if the command prints nothing, cmux inserts the shell-escaped remote path it chose instead. Per-file outputs are space-joined. First matching enabled rule wins; no match runs the built-in scp unchanged. A non-zero exit, timeout, or cancel inserts nothing.

Type

`array<object>`

Default

```
[]
```

### `notifications`

Notification behavior from Settings > Notifications.

`notifications.dockBadge`

Show the unread count in the Dock tile.

Type

`boolean`

Default

`true`

`notifications.showInMenuBar`

Show the menu bar extra.

Type

`boolean`

Default

`true`

`notifications.unreadPaneRing`

Highlight panes with unread notifications.

Type

`boolean`

Default

`true`

`notifications.paneFlash`

Flash the focused pane when requested.

Type

`boolean`

Default

`true`

`notifications.paneFlashDoubleBlink`

Blink the pane flash twice instead of one short pulse.

Type

`boolean`

Default

`true`

`notifications.paneFlashOnTyping`

Flash the pane when terminal typing dismisses its notification.

Type

`boolean`

Default

`true`

`notifications.paneFlashThemeColor`

Use the terminal theme foreground for flashes when paneFlashColor is unset. Unread rings remain cmux blue.

Type

`boolean`

Default

`false`

`notifications.paneFlashColor`

Override the pane flash and unread notification ring color. Leave unset to use the accent from app.accentColor.

Type

`unknown`

Default

`null`

`notifications.soundWhenFocused`

Den Benachrichtigungston auch dann abspielen, wenn der benachrichtigende Bereich bereits fokussiert ist. Standardmäßig aus, sodass ein fokussierter Bereich nur Ring und Aufblinken zeigt.

Type

`boolean`

Default

`false`

`notifications.suppressOnlyFocusedSurface`

Wenn aktiviert, wird ein Benachrichtigungsbanner nur dann automatisch zurückgezogen, wenn seine Oberfläche genau die fokussierte Oberfläche ist. Ein Banner, das für eine nicht fokussierte Oberfläche im aktuell sichtbaren Workspace zugestellt wurde, bleibt sichtbar, bis Sie diese Oberfläche fokussieren (oder das Banner anklicken bzw. schließen), anstatt zurückgezogen zu werden, sobald der Workspace sichtbar wird. Deaktiviert bleibt das bisherige Zurückziehen anhand der Workspace-Sichtbarkeit erhalten.

Type

`boolean`

Default

`false`

`notifications.suppressWhenAppFocused`

Wenn aktiviert, überspringt cmux das Desktop-Banner für jede Benachrichtigung, solange cmux die aktive App ist, nicht nur für den fokussierten Bereich. Benachrichtigungen erscheinen weiterhin in der Seitenleiste, Ton und benutzerdefinierter Befehl werden weiterhin ausgeführt, und die Weiterleitung ans Telefon bleibt unverändert. Deaktiviert werden Banner für andere Workspaces und Bereiche weiterhin angezeigt, während cmux fokussiert ist.

Type

`boolean`

Default

`false`

`notifications.agentPermissionPrompt`

Notify when an agent (e.g. Claude Code) is blocked waiting for your permission to run a tool. On by default, since this is the alert you must act on to unblock the agent.

Type

`boolean`

Default

`true`

`notifications.agentTurnComplete`

When to notify that an agent finished a turn. whenIdle (default) suppresses the notification while the agent still has a running background task or a pending scheduled wakeup, so you are pinged once work truly drains. always notifies on every turn end; never disables it.

Type

`string`

Default

`"whenIdle"`

Allowed values

`whenIdle, always, never`

`notifications.agentIdleReminder`

Benachrichtige, wenn ein Agent untätig auf deine Eingabe wartet (etwa 60 Sekunden nach Ende eines Turns). Wird unterdrückt, solange Hintergrundarbeit des letzten Turns noch aussteht, damit ein laufender Build oder Watcher keinen falschen Wartehinweis auslöst.

Type

`boolean`

Default

`true`

`notifications.sound`

Notification sound preset.

Type

`string`

Default

`"default"`

Allowed values

`default, Basso, Blow, Bottle, Frog, Funk, Glass, Hero, Morse, Ping, Pop, Purr, Sosumi, Submarine, Tink, custom_file, none`

`notifications.customSoundFilePath`

Local path to the custom notification sound file.

Type

`string`

Default

`""`

`notifications.soundOverrides`

Sparsame Überschreibungen des Benachrichtigungstons pro Agent und Alarmtyp. Nicht gesetzte Felder verwenden notifications.sound.

Type

`object`

Default

```
{}
```

`notifications.command`

Optional shell command to run alongside notification delivery.

Type

`string`

Default

`""`

`notifications.hooksMode`

Controls whether project-local notification hooks append to inherited hooks or replace them.

Type

`string`

Default

`"append"`

Allowed values

`append, replace`

`notifications.hooks`

Composable shell hooks that receive notification policy JSON on stdin and return updated policy JSON on stdout.

Type

`array<object>`

Default

```
[]
```

### `sidebar`

Sidebar content and metadata visibility from Settings > Sidebar.

`sidebar.fontSize`

Sidebar font size in points. The legacy Ghostty key sidebar-font-size remains a fallback alias.

Type

`number`

Default

`12.5`

`sidebar.hideAllDetails`

Hide all per-workspace detail rows.

Type

`boolean`

Default

`false`

`sidebar.wrapWorkspaceTitles`

Allow workspace titles in the sidebar to wrap to multiple lines instead of truncating after one line.

Type

`boolean`

Default

`false`

`sidebar.showWorkspaceDescription`

Show custom workspace descriptions in the sidebar.

Type

`boolean`

Default

`true`

`sidebar.workspaceDescriptionColor`

Override the workspace description text color in the sidebar.

Type

`unknown`

Default

`null`

`sidebar.beta`

Experimental sidebar features.

Type

`object`

Default

`none`

`sidebar.branchLayout`

Show git branch details stacked vertically or inline.

Type

`string`

Default

`"vertical"`

Allowed values

`vertical, inline`

`sidebar.branchVerticalLayout`

Show git branch details stacked vertically when true, or inline when false. This boolean form is the canonical setting; branchLayout remains supported as a legacy alias.

Type

`boolean`

Default

`true`

`sidebar.stackBranchDirectory`

Render the git branch and working directory on separate lines instead of sharing one line.

Type

`boolean`

Default

`false`

`sidebar.pathLastSegmentOnly`

Truncate sidebar paths from the start, showing as much of the trailing path as fits with a leading …/. When false, full paths are abbreviated with ~/.

Type

`boolean`

Default

`false`

`sidebar.showNotificationMessage`

Show the latest notification text in the sidebar.

Type

`boolean`

Default

`true`

`sidebar.notificationMessageLineLimit`

Maximale Anzahl der Zeilen, die für die neueste Benachrichtigung unter jedem Workspace-Titel angezeigt werden.

Type

`integer`

Default

`12`

`sidebar.showBranchDirectory`

Show the workspace working directory.

Type

`boolean`

Default

`true`

`sidebar.showCloudDeviceIcons`

Cloud-Maschinen- und Gerätesymbole neben Titeln entfernter Arbeitsbereiche unabhängig von Git-Branch- und Verzeichnisdetails anzeigen.

Type

`boolean`

Default

`true`

`sidebar.showPullRequests`

Show pull request metadata in the sidebar.

Type

`boolean`

Default

`true`

`sidebar.watchGitStatus`

Watch repository files for sidebar branch and pull request metadata without polling git.

Type

`boolean`

Default

`true`

`sidebar.makePullRequestsClickable`

Allow sidebar pull request metadata to open links when clicked.

Type

`boolean`

Default

`true`

`sidebar.openPullRequestLinksInCmuxBrowser`

Open sidebar pull request links in the embedded cmux browser.

Type

`boolean`

Default

`true`

`sidebar.openPortLinksInCmuxBrowser`

Open sidebar port links in the embedded cmux browser.

Type

`boolean`

Default

`true`

`sidebar.showSSH`

Show SSH connection details.

Type

`boolean`

Default

`true`

`sidebar.showPorts`

Show listening ports.

Type

`boolean`

Default

`true`

`sidebar.showLog`

Show recent log snippets.

Type

`boolean`

Default

`true`

`sidebar.showProgress`

Show progress indicators.

Type

`boolean`

Default

`true`

`sidebar.showAgentUsage`

Ergänzt den Statuseintrag von Claude Code oder Codex um die Nutzung des Coding-Agenten: Modell und verbrauchtes Kontextfenster sowie bei Claude Code die geschätzten API-Kosten (Hauptthread und Subagenten) zu den veröffentlichten Anthropic-Listenpreisen. Die Kosten sind eine Schätzung und nicht Ihre Abonnementrechnung; Batch- und Priority-Stufen, Partnerpreise, Fast Mode und Gebühren für Server-Tools sind nicht berücksichtigt.

Type

`boolean`

Default

`false`

`sidebar.showAgentActivity`

Show the loading spinner on workspaces with running coding agents or active loaders.

Type

`boolean`

Default

`true`

`sidebar.loadingSpinnerPosition`

Which side of the workspace row the loading spinner appears on: leading (left, sharing the unread-badge slot) or trailing (right).

Type

`string`

Default

`"leading"`

Allowed values

`leading, trailing`

`sidebar.notificationBadgePosition`

Which side of the workspace row the unread notification badge appears on: leading (left) or trailing (right).

Type

`string`

Default

`"leading"`

Allowed values

`leading, trailing`

`sidebar.showCustomMetadata`

Show custom metadata pills.

Type

`boolean`

Default

`true`

`sidebar.compactAgentStatus`

Jeden Workspace in einer Zeile anzeigen: Ein farbiges Symbol vor dem Titel zeigt Agenten-, Ungelesen- und Pull-Request-Status und ersetzt die Status-Zeilen von Agenten (zum Beispiel „Wird ausgeführt“ oder „Eingabe erforderlich“), die Branch- und Verzeichniszeile sowie die Pull-Request-Zeilen, deren Details in den Tooltip des Symbols wandern. Andere Statuseinträge behalten ihre eigenen Zeilen.

Type

`boolean`

Default

`false`

`sidebar.compactStatusIcons`

SF-Symbol-Namen, die das compactAgentStatus-Symbol je Zustand ersetzen, zum Beispiel {"terminal": "apple.terminal", "needsInput": "hand.raised.fill"}. Nicht gesetzte Zustände behalten das eingebaute Symbol, und ein Name, der nicht darstellbar ist, fällt darauf zurück.

Type

`object`

Default

```
{}
```

`sidebar.activeTabIndicatorStyle`

Active workspace indicator style in the sidebar.

Type

`string`

Default

`"leftRail"`

Allowed values

`leftRail, solidFill, rail, border, wash, lift, typography, washRail, blueWashColorRail`

`sidebar.selectionColor`

Override the selected workspace background color in the sidebar.

Type

`unknown`

Default

`null`

`sidebar.notificationBadgeColor`

Override the unread notification badge color in the sidebar.

Type

`unknown`

Default

`null`

`sidebar.rightMaxWidth`

Maximale Breite der rechten Seitenleiste in Punkten. Wenn weggelassen, gilt die integrierte dynamische Obergrenze.

Type

`number`

Default

`none`

### `workspaceGroups`

Per-cwd customization for sidebar workspace groups. The anchor workspace's cwd is matched against the keys in \`byCwd\`; longest-match wins. Keys containing \`\*\` or \`?\` are matched as fnmatch globs (with \`~\` expanded); other keys are path prefixes.

`workspaceGroups.newWorkspacePlacement`

Globaler Standard dafür, wo Cmd-N innerhalb einer Gruppe, die + Schaltfläche im Gruppenkopf und konfigurierte Gruppenaktionen den neuen Workspace platzieren: \`afterCurrent\` (nach dem aktiven Workspace in der Gruppe, mit Rückfall auf top), \`top\` (zweite Position direkt nach dem Anker) oder \`end\` (nach dem letzten Mitglied).

Type

`string`

Default

`"afterCurrent"`

Allowed values

`afterCurrent, top, end`

`workspaceGroups.byCwd`

Map of cwd patterns to group customization. Empty when omitted.

Type

`object`

Default

`none`

### `workspaceColors`

Workspace tab and badge colors from Settings > Workspace Colors.

`workspaceColors.indicatorStyle`

Active workspace indicator style. Legacy aliases are accepted and normalized.

Type

`string`

Default

`"leftRail"`

Allowed values

`leftRail, solidFill, rail, border, wash, lift, typography, washRail, blueWashColorRail`

`workspaceColors.selectionColor`

Override the selected workspace background color.

Type

`unknown`

Default

`null`

`workspaceColors.subtleSelection`

Show the selected workspace as a faint accent tint with a thin edge instead of a solid fill. A custom selectionColor still uses a solid fill.

Type

`boolean`

Default

`false`

`workspaceColors.brightenInDarkMode`

Lighten workspace colors in dark mode so they stay readable on a dark sidebar. false shows colors exactly as chosen. Applies to the solidFill indicator; leftRail always lightens its rail.

Type

`boolean`

Default

`true`

`workspaceColors.notificationBadgeColor`

Override the unread notification badge color.

Type

`unknown`

Default

`null`

`workspaceColors.colors`

Full named workspace color palette. Include built-in entries you want to keep, remove keys to remove colors, and add more named entries to extend the picker.

Type

`object`

Default

```
{
  "Red": "#C0392B",
  "Crimson": "#922B21",
  "Orange": "#A04000",
  "Amber": "#7D6608",
  "Olive": "#4A5C18",
  "Green": "#196F3D",
  "Teal": "#006B6B",
  "Aqua": "#0E6B8C",
  "Blue": "#1565C0",
  "Navy": "#1A5276",
  "Indigo": "#283593",
  "Purple": "#6A1B9A",
  "Magenta": "#AD1457",
  "Rose": "#880E4F",
  "Brown": "#7B3F00",
  "Charcoal": "#3E4B5E"
}
```

`workspaceColors.paletteOverrides`

Legacy workspace color overrides for built-in palette names. Prefer workspaceColors.colors for new configs.

Type

`object`

Default

```
{}
```

`workspaceColors.customColors`

Legacy list of custom workspace colors. Prefer workspaceColors.colors for new configs.

Type

`array<unknown>`

Default

```
[]
```

`workspaceColors.colors` is the full palette. Keep the built-in keys you want, delete keys to remove colors from the picker, and add more named color entries to extend it. Older `paletteOverrides` and `customColors` files still parse during upgrades, but new files should use `colors`.

```
{
  "workspaceColors": {
    "colors": {
      "Red": "#C0392B",
      "Blue": "#1565C0",
      "Neon Mint": "#00F5D4"
    }
  }
}
```

### `sidebarAppearance`

Sidebar tint settings from Settings > Sidebar Appearance.

`sidebarAppearance.matchTerminalBackground`

Use the terminal background instead of the sidebar tint.

Type

`boolean`

Default

`true`

`sidebarAppearance.tintColor`

Base sidebar tint color used when light/dark overrides are not set.

Type

`unknown`

Default

`"#000000"`

`sidebarAppearance.lightModeTintColor`

Sidebar tint override for light appearance.

Type

`unknown`

Default

`null`

`sidebarAppearance.darkModeTintColor`

Sidebar tint override for dark appearance.

Type

`unknown`

Default

`null`

`sidebarAppearance.tintOpacity`

Sidebar tint opacity from 0 to 1. Note: this only controls the sidebar tint, not terminal/window transparency. For terminal background transparency or blur, set \`background-opacity\` and \`background-blur\` in \`~/.config/ghostty/config\` and run \`cmux reload-config\`.

Type

`number`

Default

`0.18`

### `automation`

Socket control and automation settings from Settings > Automation.

`automation.socketControlMode`

Socket control mode. Legacy aliases are accepted and normalized.

Type

`string`

Default

`"cmuxOnly"`

Allowed values

`off, cmuxOnly, automation, password, allowAll, openAccess, fullOpenAccess, notifications, full`

`automation.socketPassword`

Password for password-mode socket access. Use null or an empty string to clear it.

Type

`string | null`

Default

`""`

`automation.claudeCodeIntegration`

Enable cmux integration hooks for Claude Code.

Type

`boolean`

Default

`true`

`automation.codexIntegration`

Enable cmux integration hooks for Codex. When disabled, cmux no longer wraps the codex command but still tracks live Codex sessions it can observe.

Type

`boolean`

Default

`true`

`automation.canonicalAgentScratch`

Use a cmux-owned scratch directory for native agent panels, organized per session.

Type

`boolean`

Default

`false`

`automation.piIntegration`

Enable cmux integration hooks for Pi.

Type

`boolean`

Default

`true`

`automation.claudeBinaryPath`

Custom path to the claude binary.

Type

`string`

Default

`""`

`automation.workspaceAutoNaming`

Opt-in: KI-basierte automatische Benennung von Workspaces und Tabs aus dem Gesprächsinhalt der Agenten. Wenn aktiviert, fasst cmux unterstützte Agent-Sitzungen mit dem eigenen Binary des jeweiligen Agenten zu kurzen Titeln zusammen; manuelle Umbenennungen haben immer Vorrang.

Type

`boolean`

Default

`false`

`automation.autoNamingAgent`

Welcher Agent für jede Sitzung automatische Namen erzeugt. „auto“ (Standard) benennt jede Sitzung mit ihrem eigenen Agenten; ein beliebiger Agent-Slug (claude, codex, grok, opencode, pi, omp, …) überschreibt die Benennung für alle Sitzungen, auch für die anderer Agenten. Nicht ansteuerbare oder nicht installierte Agenten greifen auf den eigenen Agenten der Sitzung zurück, sodass die Benennung nie fehlschlägt.

Type

`string`

Default

`"auto"`

`automation.ripgrepBinaryPath`

Custom path to the ripgrep (rg) binary used by project search.

Type

`string`

Default

`""`

`automation.suppressSubagentNotifications`

Unterdrücke sichtbare Abschlussbenachrichtigungen und Statusänderungen von verschachtelten Codex- oder Claude-Unteragenten, während ihre Ereignisse in der Feed-Telemetrie bleiben.

Type

`boolean`

Default

`true`

`automation.agentAutoResume`

Sendet \`continue\` mit Backoff an einen von cmux gestarteten Agenten, dessen Zug mit einem wiederholbaren Upstream-Fehler endete (Modell ausgelastet, überlastet oder Verbindung verloren). Züge, die auf eine Person warten, werden nie fortgesetzt.

Type

`boolean`

Default

`true`

`automation.ampIntegration`

Schaltet die cmux-Hooks für Amp ein oder aus. Im ausgeschalteten Zustand bleibt das mitgelieferte Plugin installiert, ist aber inaktiv.

Type

`boolean`

Default

`true`

`automation.cursorIntegration`

Enable cmux integration hooks for Cursor.

Type

`boolean`

Default

`true`

`automation.geminiIntegration`

Enable cmux integration hooks for Gemini.

Type

`boolean`

Default

`true`

`automation.kiroIntegration`

Enable cmux integration hooks for Kiro CLI.

Type

`boolean`

Default

`true`

`automation.kiroNotificationLevel`

Controls how many Kiro tool events appear in Feed.

Type

`string`

Default

`"standard"`

Allowed values

`minimal, standard, verbose`

`automation.portBase`

Starting value for workspace CMUX\_PORT assignments.

Type

`integer`

Default

`9100`

`automation.portRange`

Number of ports reserved per workspace.

Type

`integer`

Default

`10`

### `ui`

UI action wiring, including surface tab bar buttons and plus-button behavior. The plus-button context menu shows ui.newWorkspace.contextMenu (or the default items) followed by actions that opt in via newWorkspaceMenu.

`ui.newWorkspace`

New Workspace button behavior and context-menu wiring.

Type

`object`

Default

`none`

### `agentChat`

Agent Chat GUI server settings. The built-in New agent chat action opens this URL in a browser workspace, probes /healthz first, and can run a configured start command when the server is down.

`agentChat.url`

Base URL for the machine-local Agent Chat GUI server. cmux probes <url>/healthz before opening the workspace.

Type

`string`

Default

`"http://127.0.0.1:7739"`

`agentChat.startCommand`

Optional shell command to start the Agent Chat server when <url>/healthz is unreachable. cmux runs it detached with the user's SHELL, polls healthz for a short bounded window, then opens the workspace either way.

Type

`string`

Default

`none`

`agentChat.keys`

Keyboard behavior overrides for the Agent Chat web UI.

Type

`object`

Default

`none`

`agentChat.fonts`

Font overrides for the Agent Chat web UI. Omitted values fall back to Ghostty and built-in defaults.

Type

`object`

Default

`none`

### `browser`

Embedded browser settings from Settings > Browser.

`browser.defaultSearchEngine`

Standardsuchmaschine für Nicht-URL-Eingaben in der Browser-Adressleiste. Verwenden Sie custom mit customSearchEngineURLTemplate für beliebige Anbieter.

Type

`string`

Default

`"google"`

Allowed values

`google, duckduckgo, bing, kagi, startpage, brave, perplexity, exa, yahoo, ecosia, qwant, mojeek, wikipedia, github, baidu, yandex, custom`

`browser.customSearchEngineName`

Anzeigename, der verwendet wird, wenn defaultSearchEngine custom ist.

Type

`string`

Default

`""`

`browser.customSearchEngineURLTemplate`

Such-URL, die verwendet wird, wenn defaultSearchEngine custom ist. Verwenden Sie den Abfrageplatzhalter oder %s für den kodierten Suchbegriff. Ohne Platzhalter fügt cmux q= zur URL hinzu.

Type

`string`

Default

`"https://www.google.com/search?q={query}"`

`browser.showSearchSuggestions`

Show omnibar search suggestions.

Type

`boolean`

Default

`true`

`browser.theme`

Embedded browser theme.

Type

`string`

Default

`"system"`

Allowed values

`system, light, dark`

`browser.defaultZoomLevel`

Default page zoom factor applied to newly opened browser pages (1 = 100%). Zoom In, Zoom Out, and Actual Size still adjust each page.

Type

`number`

Default

`1`

`browser.discardHiddenWebViews`

Allow hidden browser tabs to release page memory. Scroll position, supported form input, and history are restored when recoverable.

Type

`boolean`

Default

`true`

`browser.hiddenWebViewDiscardMode`

How cmux picks hidden browser tabs to free. budget frees the tabs hidden longest once hidden tabs use more than hiddenWebViewMemoryBudgetMB; timer frees every tab hidden longer than hiddenWebViewDiscardDelaySeconds.

Type

`string`

Default

`"budget"`

Allowed values

`budget, timer`

`browser.hiddenWebViewMemoryBudgetMB`

Megabytes of memory hidden browser tabs may use before cmux frees the tabs hidden longest. Applies when hiddenWebViewDiscardMode is budget.

Type

`integer`

Default

`2048`

`browser.hiddenWebViewDiscardDelaySeconds`

Seconds a browser tab must stay hidden before cmux may free its page memory. In timer mode, every tab hidden this long is freed.

Type

`number`

Default

`300`

`browser.autoRestoreUnloadedPages`

Restore a browser page unloaded to save memory, or whose web process ended while hidden, as soon as its tab is shown. When false, the tab shows the page's last snapshot until you click Restore.

Type

`boolean`

Default

`true`

`browser.askWhereToSaveDownloads`

Show a save panel for browser downloads instead of saving directly to Downloads.

Type

`boolean`

Default

`false`

`browser.showLinkHoverURL`

Zeigt das Ziel eines Links unten links im Browserbereich an, solange sich der Zeiger über dem Link befindet oder der Link den Tastaturfokus hat.

Type

`boolean`

Default

`true`

`browser.openTerminalLinksInCmuxBrowser`

Open clicked terminal links in the embedded browser.

Type

`boolean`

Default

`true`

`browser.interceptTerminalOpenCommandInCmuxBrowser`

Intercept terminal open http(s) commands and route them through the embedded browser.

Type

`boolean`

Default

`true`

`browser.hostsToOpenInEmbeddedBrowser`

Allowlist of hosts that should stay inside the embedded browser.

Type

`array<string>`

Default

```
[]
```

`browser.urlsToAlwaysOpenExternally`

Rules that always open matching URLs in the system browser.

Type

`array<string>`

Default

```
[]
```

`browser.insecureHttpHostsAllowedInEmbeddedBrowser`

HTTP hosts allowed in the embedded browser without a warning prompt.

Type

`array<string>`

Default

```
[
  "localhost",
  "*.localhost",
  "127.0.0.1",
  "::1",
  "0.0.0.0",
  "*.localtest.me"
]
```

`browser.urlAllowlist`

Host- oder URL-Muster, die die Navigation im eingebetteten Browser einschränken. Die Einstellungen schlagen lokale Entwicklungsursprünge vor; durch Speichern einer Liste wird die optionale Einschränkung aktiviert. Entfernen Sie Einträge, um sie zu blockieren, oder lassen Sie den Benutzerwert ohne verwaltete Richtlinie leer, um die Einschränkung zu deaktivieren.

Type

`array<string>`

Default

```
[
  "localhost",
  "*.localhost",
  "127.0.0.1",
  "::1",
  "0.0.0.0",
  "*.localtest.me"
]
```

`browser.showImportHintOnBlankTabs`

Show the browser import hint on blank tabs.

Type

`boolean`

Default

`true`

`browser.reactGrabVersion`

Pinned react-grab version for the browser toolbar helper.

Type

`string`

Default

`"0.1.29"`

### `markdown`

Built-in markdown viewer settings.

`markdown.fontSize`

Default body font size, in points, for newly opened markdown viewers. Zoom a viewer live with Cmd-+ / Cmd-- / Cmd-0.

Type

`integer`

Default

`15`

`markdown.fontFamily`

Default body font family for newly opened markdown viewers. Leave empty for the system markdown font stack.

Type

`string`

Default

`""`

`markdown.maxWidth`

Default maximum reading column width, in CSS pixels, for newly opened markdown viewers.

Type

`integer`

Default

`980`

### `fileEditor`

Built-in file editor settings.

`fileEditor.wordWrap`

Bricht Zeilen, die breiter als der Editor sind, weich um, sodass kein horizontales Scrollen nötig ist.

Type

`boolean`

Default

`false`

`fileEditor.syntaxHighlighting`

Färbt Code, der im integrierten Dateieditor geöffnet ist, passend zur jeweiligen Sprache ein.

Type

`boolean`

Default

`true`

`fileEditor.lineNumbers`

Nummeriert jede Zeile in einer Spalte neben dem Text des integrierten Dateieditors.

Type

`boolean`

Default

`true`

`fileEditor.indentGuides`

Markiert jede Einrückungsebene im integrierten Dateieditor mit einer dünnen senkrechten Linie.

Type

`boolean`

Default

`true`

`fileEditor.currentLineHighlight`

Hebt die Zeile mit dem Textcursor farbig hervor, solange nichts ausgewählt ist.

Type

`boolean`

Default

`true`

`fileEditor.tabWidth`

Wie viele Spalten ein Tabstopp umfasst. Die Einrückungshilfslinien verwenden denselben Abstand.

Type

`integer`

Default

`4`

### `fileExplorer`

Einstellungen für den Datei-Explorer (Dateibaum) in der rechten Seitenleiste.

`fileExplorer.doubleClickAction`

Legt fest, was ein Doppelklick auf eine Datei im Dateiexplorer bewirkt (oder Return bei einem Suchergebnis). \`preview\` öffnet die integrierte cmux-Dateivorschau (Standard und bisheriges Verhalten). \`defaultEditor\` öffnet die Datei mit der macOS-Standard-App für diesen Dateityp. \`preferredEditor\` öffnet mit dem Befehl \`app.preferredEditor\` und fällt auf die Standard-App zurück, wenn keiner gesetzt ist. Gilt nur für Dateien; Verzeichnisse werden immer ein-/ausgeklappt, und nicht-lokale (Remote-)Dateiexplorer öffnen immer die cmux-Vorschau.

Type

`string`

Default

`"preview"`

Allowed values

`preview, defaultEditor, preferredEditor`

### `shortcuts`

Keyboard shortcut settings from Settings > Keyboard Shortcuts.

`shortcuts.showModifierHoldHints`

Zeigt Kurzbefehl-Hinweis-Chips an, während Cmd oder Control gedrückt gehalten wird.

Type

`boolean`

Default

`true`

`shortcuts.when`

Optionale Kontextprädikate pro Aktion (VS-Code-artige \`when\`-Klauseln), nach cmux-Aktions-ID indiziert. Jeder Wert ist ein boolescher Ausdruck über Kontextschlüssel, kombiniert mit !, &&, || und Klammern. Boolesche Schlüssel: sidebarFocus, browserFocus, markdownFocus, filePreviewTextEditorFocus, simulatorFocus, terminalFocus, commandPaletteVisible, terminalFindVisible, terminalAlternateScreen, workspaceCanvasLayout. Typisierte Schlüssel unterstützen Vergleiche: die Zeichenkette sidebarMode (files, find, sessions, feed oder dock) sowie die Ganzzahlen paneCount und workspaceCount. Vergleichsoperatoren sind ==, !=, =~ (regulärer Ausdruck), <, <=, >, >= und \`in \[a, b\]\`; ein unbekannter oder fehlender Schlüssel gilt als false. Die booleschen Literale true und false werden ebenfalls akzeptiert; \`key == false\` entspricht \`!key\`. Der Kurzbefehl der Aktion wird nur ausgelöst (und kollidiert nur mit anderen Kurzbefehlen), wenn die Klausel erfüllt ist. Beispiele: { "selectWorkspaceByNumber": "!sidebarFocus" } wählt Workspaces mit Ctrl+1–9 überall aus, außer wenn die rechte Seitenleiste fokussiert ist; { "selectSurfaceByNumber": "sidebarMode == 'find' && paneCount > 1" } beschränkt eine Belegung auf die Suchen-Seitenleiste, wenn der Workspace mehrere Panes hat.

Type

`object`

Default

```
{}
```

### `shortcuts.bindings`

Use a string for a single shortcut, a two-item array for a chord, or `null` to unbind a shortcut in `shortcuts.bindings`. Unbind aliases also include empty string (`""`), `none`, `clear`, `unbound`, and `disabled`. Example chord: `["ctrl+b", "c"]`. Numbered actions use `1` as the stored default and still match digits `1` through `9`.

The defaults below are the same cmux-owned actions listed on the [keyboard shortcuts page](https://cmux.com/de/docs/keyboard-shortcuts).

#### App

`openSettings`

Settings

Default file value

`cmd+,`

`openTeamPicker`

Team-Auswahl öffnen

Default file value

`opt+shift+cmd+t`

`reloadConfiguration`

Reload configuration

Default file value

`cmd+shift+,`

`showHideAllWindows`

Show/hide all cmux windowssystem-wide hotkey

Default file value

`ctrl+opt+cmd+.`

`globalSearch`

Global searchwhen cmux is active

Default file value

`opt+cmd+f`

`commandPalette`

Command palette

Default file value

`cmd+shift+p`

`agentInbox`

Agent-Posteingang anzeigen

Default file value

`cmd+shift+i`

`commandPaletteNext`

Command palette next resultwhen the command palette is open

Default file value

`ctrl+n`

`commandPalettePrevious`

Command palette previous resultwhen the command palette is open

Default file value

`ctrl+p`

`newWindow`

New window

Default file value

`cmd+shift+n`

`closeWindow`

Close window

Default file value

`ctrl+cmd+w`

`toggleFullScreen`

Toggle full screen

Default file value

`ctrl+cmd+f`

`sendFeedback`

Send feedbackunbound by default

Default file value

`reopenPreviousSession`

Reopen previous session

Default file value

`cmd+shift+o`

`quit`

Quit cmux

Default file value

`cmd+q`

#### Workspaces

`toggleSidebar`

Toggle left sidebar

Default file value

`cmd+b`

`toggleFileExplorer`

Toggle right sidebar

Default file value

`cmd+opt+b`

`newTab`

Neuer lokaler Arbeitsbereich

Default file value

`cmd+n`

`newLocalWorkspace`

Neuer lokaler Arbeitsbereichöffnet einen lokalen Arbeitsbereich, während ein gespiegelter Remote-tmux-Arbeitsbereich aktiv ist; „Neuer Arbeitsbereich“ würde dort stattdessen eine Sitzung auf dessen Host starten

Default file value

`ctrl+opt+cmd+n`

`newBrowserWorkspace`

New browser workspacelike New Workspace, but the first surface is a browser pane with the address bar focused

Default file value

`opt+cmd+n`

`newCloudWorkspace`

Neuer Cloud-ArbeitsbereichVerwendet die Maschine des zuletzt ausgewählten Cloud-Arbeitsbereichs, danach die erste Maschine in der rechten Seitenleiste; wenn keine nutzbare Maschine vorhanden ist, wird New Cloud Machine geöffnet

Default file value

`cmd+y`

`newCloudMachine`

Neue Cloud-Maschine

Default file value

`shift+cmd+y`

`saveLayoutTemplate`

Save current workspace layout as a template

Default file value

`ctrl+cmd+s`

`openFolder`

Open folder

Default file value

`cmd+o`

`goToWorkspace`

Go to workspaceworkspace switcher

Default file value

`cmd+p`

`nextSidebarTab`

Next workspace

Default file value

`ctrl+cmd+]`

`prevSidebarTab`

Previous workspace

Default file value

`ctrl+cmd+[`

`nextSidebarTabInGroup`

Next workspace in groupunbound by default; skips the group anchor and uses window-wide cycling when ungrouped

Default file value

`prevSidebarTabInGroup`

Previous workspace in groupunbound by default; skips the group anchor and uses window-wide cycling when ungrouped

Default file value

`moveWorkspaceUp`

Move workspace up

Default file value

`ctrl+opt+cmd+[`

`moveWorkspaceDown`

Move workspace down

Default file value

`ctrl+opt+cmd+]`

`focusHistoryBack`

Focus backFocus Back/Forward use Cmd+\[ and Cmd+\] outside browser panes; browser Back/Forward use the same defaults inside browser panes. Unbind Focus Back/Forward to let terminal shortcuts handle those keys.

Default file value

`cmd+[`

`focusHistoryForward`

Focus forwardFocus Back/Forward use Cmd+\[ and Cmd+\] outside browser panes; browser Back/Forward use the same defaults inside browser panes. Unbind Focus Back/Forward to let terminal shortcuts handle those keys.

Default file value

`cmd+]`

`focusHistoryLast`

Focus lastunbound by default; toggles between the current position and the one focus last left, so pressing it twice returns where you started

Default file value

`selectWorkspaceByNumber`

Select workspace 1…9

Default file value

`cmd+1`

`renameWorkspace`

Rename workspace

Default file value

`cmd+shift+r`

`editWorkspaceDescription`

Edit workspace description

Default file value

`opt+cmd+e`

`markWorkspaceDone`

Mark workspace as done

Default file value

`cmd+;`

`cycleWorkspaceStatus`

Cycle workspace status one lane forward

Default file value

`cmd+shift+;`

`toggleChecklistItemComplete`

Toggle the highlighted checklist itemApplies in the focused todo pane or checklist popover.

Default file value

`cmd+enter`

`newWorkspaceGroup`

New empty workspace group

Default file value

`ctrl+cmd+g`

`groupSelectedWorkspaces`

Group selected workspaces

Default file value

`cmd+shift+g`

`toggleFocusedWorkspaceGroupCollapsed`

Collapse or expand focused workspace group

Default file value

`ctrl+cmd+.`

`focusSidebar`

Focus the workspace sidebar↑/↓ select workspaces; Return or Esc returns to the terminal

Default file value

`ctrl+cmd+e`

`showWindowHints`

Click by hint: label the window's controlsType a label to click it, Shift+label to right-click; Esc cancels. Preview feature, off by default: turn on Click by Hint in Settings > Beta Features or from the command palette

Default file value

`cmd+j`

`focusRightSidebar`

Toggle right-sidebar focus

Default file value

`cmd+shift+e`

`navigateRightSidebarRows`

Navigate focused sidebar rowsIn Files, H/L collapse and expand folders. Search starts with /.

Default file value

`j / k`

`fileExplorerOpenSelection`

Ausgewählte Datei öffnen oder Ordner umschaltenfokussierter Datei-Explorer

Default file value

`enter`

`fileExplorerOpenSelectionFinderAlias`

Ausgewählte Datei öffnen oder Ordner umschaltenFinder-artiger Alias für den fokussierten Datei-Explorer

Default file value

`cmd+down`

`closeWorkspace`

Close workspace

Default file value

`cmd+shift+w`

`reopenClosedWorkspace`

Reopen closed workspaceunbound by default

Default file value

#### Oberflächen

`newSurface`

New surface

Default file value

`cmd+t`

`nextSurface`

Next surface

Default file value

`cmd+shift+]`

`prevSurface`

Previous surface

Default file value

`cmd+shift+[`

`moveSurfaceLeft`

Reorder surface left

Default file value

`opt+cmd+shift+[`

`moveSurfaceRight`

Reorder surface right

Default file value

`opt+cmd+shift+]`

`moveSurfaceToPreviousPane`

Move surface to previous pane

Default file value

`ctrl+cmd+shift+[`

`moveSurfaceToNextPane`

Move surface to next pane

Default file value

`ctrl+cmd+shift+]`

`moveSurfaceToPaneLeft`

Move surface to pane on left

Default file value

`opt+cmd+shift+left`

`moveSurfaceToPaneRight`

Move surface to pane on right

Default file value

`opt+cmd+shift+right`

`moveSurfaceToPaneUp`

Move surface to pane above

Default file value

`opt+cmd+shift+up`

`moveSurfaceToPaneDown`

Move surface to pane below

Default file value

`opt+cmd+shift+down`

`selectSurfaceByNumber`

Select surface 1…9

Default file value

`ctrl+1`

`renameTab`

Rename tab

Default file value

`cmd+r`

`closeTab`

Close tab

Default file value

`cmd+w`

`closeOtherTabsInPane`

Close other tabs in pane

Default file value

`opt+cmd+t`

`reopenClosedBrowserPanel`

Reopen last closed

Default file value

`cmd+shift+t`

`toggleTerminalCopyMode`

Toggle terminal copy mode

Default file value

`cmd+shift+m`

`clearScreenKeepScrollback`

Clear screen (keep scrollback)

Default file value

`cmd+shift+k`

`simulatorHome`

Simulator: Homefocused Simulator

Default file value

`cmd+shift+h`

`simulatorRotateLeft`

Simulator: rotate leftfocused Simulator

Default file value

`cmd+left`

`simulatorRotateRight`

Simulator: rotate rightfocused Simulator

Default file value

`cmd+right`

`simulatorToggleAppearance`

Simulator: toggle appearancefocused Simulator

Default file value

`cmd+shift+a`

`simulatorToggleSoftwareKeyboard`

Simulator: toggle software keyboardfocused Simulator

Default file value

`cmd+k`

`focusTextBoxInput`

Switch focus between terminal and TextBox input

Default file value

`cmd+shift+a`

`cycleTextBoxSubmitAction`

Cycle TextBox submit action

Default file value

`shift+tab`

`attachTextBoxFile`

Attach file to TextBox input

Default file value

`opt+cmd+shift+a`

`sendCtrlFToTerminal`

Send Ctrl-F to terminalunbound by default; forwards Ctrl-F to the focused terminal (Claude Code: invoke twice to force-stop hung background agents)

Default file value

`sizeTerminalToMyWindow`

Size shared terminal to my windowwhen a terminal is shared with phones or other clients, makes this Mac's window set its grid

Default file value

`ctrl+opt+cmd+=`

`pasteLastScreenshot`

Letzten Screenshot einfügenstandardmäßig nicht belegt; fügt den Pfad des neuesten Screenshots aus dem macOS-Screenshot-Ordner (ohne Änderung der Schreibtisch) in das fokussierte Terminal ein und lädt ihn in Remote-Workspaces zuerst hoch

Default file value

`saveFilePreview`

Save file previewfocused text preview

Default file value

`cmd+s`

`toggleFileEditorWordWrap`

Zeilenumbruch im Dateieditor umschaltenfokussierter Dateieditor

Default file value

`opt+z`

#### Geteilte Bereiche

`focusLeft`

Focus pane left

Default file value

`opt+cmd+left`

`focusRight`

Focus pane right

Default file value

`opt+cmd+right`

`focusUp`

Focus pane up

Default file value

`opt+cmd+up`

`focusDown`

Focus pane down

Default file value

`opt+cmd+down`

`focusPreviousPane`

Focus previous pane (cycle)unbound by default; a Ghostty goto\_split:previous keybind also cycles panes while Focus Back does not claim the same keys

Default file value

`focusNextPane`

Focus next pane (cycle)unbound by default; a Ghostty goto\_split:next keybind also cycles panes while Focus Forward does not claim the same keys

Default file value

`focusPaneByNumber`

Focus pane 1…9

Default file value

`ctrl+cmd+1`

`splitRight`

Split right

Default file value

`cmd+d`

`splitDown`

Split down

Default file value

`cmd+shift+d`

`newPaneAutoLayout`

New pane (auto layout)retiles all panes like Zellij and cmux-tui Alt-n: the right column fills to four panes before a new column opens

Default file value

`ctrl+cmd+n`

`splitBrowserRight`

Split browser right

Default file value

`opt+cmd+d`

`splitBrowserDown`

Split browser down

Default file value

`opt+cmd+shift+d`

`toggleSplitZoom`

Toggle pane zoom

Default file value

`cmd+shift+enter`

`increaseWorkspaceTerminalFontSize`

Increase font size for every terminal in the selected workspace

Default file value

`ctrl+cmd+=`

`decreaseWorkspaceTerminalFontSize`

Decrease font size for every terminal in the selected workspace

Default file value

`ctrl+cmd+-`

`resetWorkspaceTerminalFontSize`

Reset font size for every terminal in the selected workspace

Default file value

`ctrl+cmd+0`

`equalizeSplits`

Equalize split sizes

Default file value

`ctrl+cmd+shift+=`

`resize-pane-left`

Resize pane left

Default file value

`ctrl+shift+h`

`resize-pane-right`

Resize pane right

Default file value

`ctrl+shift+l`

`resize-pane-up`

Resize pane up

Default file value

`ctrl+shift+k`

`resize-pane-down`

Resize pane down

Default file value

`ctrl+shift+j`

#### Canvas

`toggleCanvasLayout`

Toggle canvas layout

Default file value

`ctrl+cmd+c`

`canvasRevealFocusedPane`

Reveal focused pane

Default file value

`ctrl+cmd+r`

`canvasOverview`

Toggle overview zoom

Default file value

`ctrl+cmd+o`

`canvasZoomIn`

Zoom in

Default file value

`opt+cmd+=`

`canvasZoomOut`

Zoom out

Default file value

`opt+cmd+-`

`canvasZoomReset`

Actual size

Default file value

`cmd+0`

`canvasTidy`

Tidy panes into a grid

Default file value

`ctrl+cmd+t`

#### Browser

`openBrowser`

Open browser

Default file value

`cmd+shift+l`

`focusBrowserAddressBar`

Focus address bar

Default file value

`cmd+l`

`browserBack`

Back

Default file value

`cmd+[`

`browserForward`

Forward

Default file value

`cmd+]`

`browserReload`

Reload pagefocused browser

Default file value

`cmd+r`

`browserHardReload`

Seite hart neu ladenfokussierter Browser

Default file value

`cmd+shift+r`

`browserZoomIn`

Zoom in

Default file value

`cmd+=`

`browserZoomOut`

Zoom out

Default file value

`cmd+-`

`browserZoomReset`

Actual size

Default file value

`cmd+0`

`markdownZoomIn`

Markdown viewer: zoom infocused markdown viewer

Default file value

`cmd+=`

`markdownZoomOut`

Markdown viewer: zoom outfocused markdown viewer

Default file value

`cmd+-`

`markdownZoomReset`

Markdown viewer: actual sizefocused markdown viewer

Default file value

`cmd+0`

`toggleBrowserDeveloperTools`

Toggle browser developer tools

Default file value

`opt+cmd+i`

`showBrowserJavaScriptConsole`

Show browser JavaScript console

Default file value

`opt+cmd+c`

`toggleBrowserFocusMode`

Enter browser focus modeGives the focused web page first claim on shortcuts. Press Esc twice to exit.

Default file value

`opt+cmd+enter`

`toggleBrowserDesignMode`

Toggle browser design modeSelect and visually edit elements in the focused browser

Default file value

`ctrl+opt+cmd+d`

`toggleReactGrab`

Toggle React Grabfocused browser, or the only browser pane when a terminal is focused

Default file value

`cmd+shift+g`

#### Diff-Viewer

`openDiffViewer`

Open diff viewer

Default file value

`ctrl+cmd+shift+d`

`diffViewerScrollDown`

Scroll viewer down one smooth stepfocused diff or Markdown viewer

Default file value

`j`

`diffViewerScrollUp`

Scroll viewer up one smooth stepfocused diff or Markdown viewer

Default file value

`k`

`diffViewerScrollHalfPageDown`

Scroll viewer down half a pagefocused diff or Markdown viewer

Default file value

`ctrl+d`

`diffViewerScrollHalfPageUp`

Scroll viewer up half a pagefocused diff or Markdown viewer

Default file value

`ctrl+u`

`diffViewerScrollDownEmacs`

Scroll viewer down one smooth step (Emacs)focused diff or Markdown viewer

Default file value

`ctrl+n`

`diffViewerScrollUpEmacs`

Scroll viewer up one smooth step (Emacs)focused diff or Markdown viewer

Default file value

`ctrl+p`

`diffViewerScrollToBottom`

Scroll diff to bottomfocused diff viewer

Default file value

`shift+g`

`diffViewerScrollToTop`

Scroll diff to topfocused diff viewer

Default file value

`["g", "g"]`

`diffViewerOpenFileSearch`

Open diff file searchfocused diff viewer

Default file value

`/`

`diffViewerNextFile`

Jump to next diff filefocused diff viewer

Default file value

`["]", "f"]`

`diffViewerPreviousFile`

Jump to previous diff filefocused diff viewer

Default file value

`["[", "f"]]`

`diffViewerNextHunk`

Jump to next hunkfocused diff viewer

Default file value

`"n"`

`diffViewerPreviousHunk`

Jump to previous hunkfocused diff viewer

Default file value

`"p"`

`diffViewerToggleViewed`

Aktuelle Datei als angesehen markieren oder Markierung entfernenfokussierter Diff-Viewer

Default file value

`"v"`

#### Suche

`find`

Find

Default file value

`cmd+f`

`findInDirectory`

Find in directory

Default file value

`cmd+shift+f`

`findNext`

Find next

Default file value

`cmd+g`

`findPrevious`

Find previous

Default file value

`opt+cmd+g`

`hideFind`

Hide find bar

Default file value

`opt+cmd+shift+f`

`useSelectionForFind`

Use selection for find

Default file value

`cmd+e`

#### Benachrichtigungen

`showNotifications`

Show notifications

Default file value

`cmd+i`

`jumpToUnread`

Jump to latest unread

Default file value

`cmd+shift+u`

`jumpToLastPrompt`

Zur Oberfläche springen, in der du zuletzt einen Agent-Prompt gesendet hast

Default file value

`cmd+shift+b`

`toggleUnread`

Toggle current item unread state

Default file value

`opt+cmd+u`

`markOldestUnreadAndJumpNext`

Mark current item as oldest unread and jump to the next latest unread

Default file value

`ctrl+cmd+u`

`markAllNotificationsRead`

Alle Benachrichtigungen als gelesen markierenstandardmäßig nicht gebunden

Default file value

`clearAllNotifications`

Alle Benachrichtigungen löschenstandardmäßig nicht gebunden

Default file value

`triggerFlash`

Flash focused panel

Default file value

`cmd+shift+h`

### `shortcuts.when`

Optionale Kontextprädikate pro Aktion (VS-Code-artige when-Klauseln), nach cmux-Aktions-ID indiziert. Eine Belegung wird nur ausgelöst — und kollidiert nur mit einer anderen Belegung auf demselben Tastendruck — wenn ihre Klausel erfüllt ist. Ohne Klausel behält die Aktion ihren eingebauten Kontext. Das Klausel-Vokabular:

-   `sidebarFocus`, `browserFocus`, `markdownFocus`, `filePreviewTextEditorFocus`, `simulatorFocus`, `terminalFocus`, `commandPaletteVisible`, `terminalFindVisible`, `terminalAlternateScreen`, `workspaceCanvasLayout` — boolesche Schlüssel. Ein unbekannter oder fehlender Schlüssel gilt als false; die Literale true und false werden ebenfalls akzeptiert.
-   `sidebarMode` (`files`, `find`, `sessions`, `feed`, `dock`), `paneCount`, `workspaceCount` — typisierte Schlüssel für Vergleiche: der aktive Modus der rechten Seitenleiste (Zeichenkette) sowie Pane- und Workspace-Anzahl (Ganzzahlen).
-   `!`, `&&`, `||`, `(…)`, `==`, `!=`, `=~`, `<`, `<=`, `>`, `>=`, `in [a, b]` — boolesche Operatoren, typisierte Vergleiche, Regex-Abgleich und Listenzugehörigkeit. Vergleiche binden stärker als && und ||.

Damit wählt Ctrl+1–9 zum Beispiel überall Workspaces aus, außer wenn die rechte Seitenleiste fokussiert ist (Ctrl+1–5 bleibt für den Modus-Umschalter der Seitenleiste frei), und die Surface-Auswahl ist auf die Suchen-Seitenleiste beschränkt, wenn der Workspace mehrere Panes hat:

```
"shortcuts": {
  "bindings": { "selectWorkspaceByNumber": "ctrl+1" },
  "when": {
    "selectWorkspaceByNumber": "!sidebarFocus",
    "selectSurfaceByNumber": "sidebarMode == 'find' && paneCount > 1"
  }
}
```

Canonical: https://cmux.com/de/docs/configuration

Documentation index: https://cmux.com/llms.txt