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CMUX Skills — Setup Guide

Source: manaflow-ai/cmux GitHub: manaflow-ai/cmux (26.1K stars) Skills: 22 skills · 76.3K total installs Category: Terminal Multiplexing & Agent Workspaces First Seen: February 4, 2026 (catalogued August 15, 2026 sweep) Quality Tier: 🟢 Production (all three security audits pass)

cmux is a macOS multiplexer that organizes agent sessions into a topology of windows, workspaces, panes, and surfaces, where a surface can be a terminal or a browser panel. The 22-skill cluster documents operating it end to end: browser panels, testing, dev workflow, backend, customization, diagnostics, keyboard shortcuts, and release/billing internals. The core skill defines the topology explicitly: window → workspace → pane → surface.


Installation

npx skills add manaflow-ai/cmux

Individual skills:

npx skills add manaflow-ai/cmux --skill cmux-browser
npx skills add manaflow-ai/cmux --skill cmux-testing

Prerequisites

Requirement Details
macOS cmux is a macOS window/workspace multiplexer
cmux installed The skills operate the cmux application
Node.js + npx For the installer

What It Provides

Skill Installs Notes
cmux 7.0K Core topology and routing (window/workspace/pane/surface)
cmux-browser 6.4K Browser panels inside cmux
cmux-markdown 5.6K Markdown rendering in panes
cmux-settings 4.8K Configuration
cmux-workspace 4.6K Workspace management
cmux-customization 4.6K Appearance and layout
cmux-diagnostics 4.5K Troubleshooting
cmux-keyboard-shortcuts 4.2K Shortcut reference
cmux-testing 3.0K Testing workflows
cmux-architecture 3.0K Internals
cmux-dev-workflow 3.0K Development loop
cmux-debugging / cmux-backend / cmux-billing / cmux-release 2.9K / 2.9K / 1.7K / 2.9K Debugging, backend, billing, release process
cmux-ghostty / cmux-custom-sidebar / cmux-socket-policy / cmux-shared-behavior / cmux-localization 2.9K each Terminal integration, UI, sockets, shared behavior, i18n

Quick Start

  1. npx skills add manaflow-ai/cmux
  2. Ask: "create a workspace with a terminal pane and a browser surface side by side"
  3. Use cmux-keyboard-shortcuts for the shortcut reference during a session

CorpusIQ Use Cases

Use Case How
Agent workstation layout Window/workspace/pane/surface topology for running research alongside browser inspection
Browser panels cmux-browser as a lightweight alternative to separate browser windows during agent work
Dev workflow reference cmux-dev-workflow and cmux-testing patterns for structured agent development loops
Multi-surface monitoring Side-by-side terminal + browser panels for cron debugging sessions

Limitations / Verification

  • macOS only — no Linux or Windows surface
  • Value requires running cmux itself; the skill cluster documents the tool
npx skills add manaflow-ai/cmux --skill cmux   # verify install works

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