Add the marketplace
/plugin marketplace add Stealinglight/cmux-claude-code-skillInstall plugins
/pluginRun these commands in Claude Code to add this plugin to your environment. The marketplace must be added before you can install its plugins.
Gives Claude the ability to control cmux: open browser tiles, spawn agents in splits, manage workspaces, automate the embedded WebKit browser, coordinate worktree-based parallel development, send notifications, and update sidebar metadata.