Cmux Customization

This is your tool for wiring up cmux the way you want it. It handles everything from custom Command Palette entries and workspace layouts to replacing the plus-button behavior and adding Dock controls. The skill knows to edit project-local config for repo-specific commands and global config for app preferences, and it backs up before touching anything. It also knows when to hand off to Ghostty config for terminal rendering instead of inventing cmux settings. If you're setting up worktree layouts, custom tab bar buttons, or team presets that should travel with your repo, this is the one to reach for. It even ships with an examples library for common patterns like PR review workspaces and full-stack dev layouts.

skills.sh installs: 6.9K
GitHub stars: 28.7K
last updated: Aug 21, 2026

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Install

$ npx -y skills add manaflow-ai/cmux --skill cmux-customization --agent claude-code

Installs into .claude/skills of the current project.

Files

cmux Customization

Keep the user's config intact, prefer schema-backed edits, and validate before reporting completion.

For content viewers, start with the viewer customization matrix. It maps each viewer to the settings, command, or external file that owns its knobs, including explicit fallbacks for viewer types whose template settings have not shipped yet.