--- title: Leader layer description: A space-bar mode for launching apps, opening links, and running commands. --- A leader key opens a layer of one-key commands. Here space enters a Leader mode, and the next key picks the action. ## The layer The Triggers group, which is always on, binds space to **Activate layer** → Leader. Leader is a mode, so its keys stay live until esc. | Key | Action | | --- | --- | | b | Open app: Chrome | | m | Open app: Spotify | | g | Open URL: github.com | | t | Run command: `open -a Terminal`, labelled Terminal | | e | Type text: an email address | | u | Sticky modifier: ⇧, toggled | ![The Leader layer's fifteen bindings](/blume-assets/content/assets/screenshots/layer-leader.png) Give a binding a label and icon, as t has, and the editor and HUD show those instead of the command. ## Raycast commands With the Raycast plugin on, choose **Raycast command** under Plugins in the action picker and search your extensions and script commands. Importing a config turns its `open "raycast://…"` commands into the same actions. See [Plugins](/docs/integrations/plugins#raycast). ## In karabiner.ts Upstream, a leader is a variable: one key sets it, and a rule gated on it maps the next keys. In Vimputer the mode owns that variable, so there's no condition to write.