How do I install the Cmux Pair Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/cmux-pair/SKILL.md and restart Claude Code. Both flows are detailed at https://claudskills.com/install/.

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

ClaudSkills / Product / ux-research

Cmux Pair

Category: Product · Sub-category: ux-research · Last updated: 2026-05-21

Legacy cmux-based pair programming bootstrap for Claude and Codex talking through cmux surfaces with an XML protocol. Keep this for historical reference and migration only. Prefer herdr-pair for current Claude/Codex collaboration; use this skill only when the user explicitly asks for the old cmux workflow.

From the source SKILL.md

Kick off a pair programming session between Claude and Codex over cmux. You are one of the two agents; the other is running in a different cmux surface. The full message protocol lives in your global config (~/.codex/AGENTS.md for Codex, ~/.claude/CLAUDE.md for Claude) under "Pair Programming Protocol (cmux)" - read it before sending anything if you haven't already.

What this skill does

Cmux Pair is a community-contributed Claude Code skill in the ux-research sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/cmux-pair/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Cmux Pair Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/cmux-pair
curl -L https://claudskills.com/skills/cmux-pair/SKILL.md \
  -o ~/.claude/skills/cmux-pair/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/cmux-pair/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/cmux-pair/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\cmux-pair\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Attribution & license

Source: https://github.com/hcaiano/skills/blob/HEAD/skills/deprecated/cmux-pair/SKILL.md
License: MIT
Author: hcaiano

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Cmux Pair

From the source SKILL.md

What this skill does

Who uses this skill

How to install

Manual install (2 steps)

One-click install via the desktop app

Attribution & license

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