Parallel development in tmux* with git worktrees

📖 Documentation · Install · Quick start · Commands · Changelog

Giga opinionated zero-friction workflow tool for managing git worktrees and tmux windows as isolated development environments. Perfect for running multiple AI agents in parallel without conflict.

Philosophy: Build on tools you already use. tmux/zellij/kitty/etc. for windowing, git for worktrees, your agent for coding - workmux ties them together.

^{_{* Also supports kitty, WezTerm, and Zellij as alternative backends.}}

📖 New to workmux? Read the introduction blog post for a quick overview.

[!TIP] I'm building aven, a local-first task manager for power users and agents.

Why workmux?

Parallel workflows. Work on multiple features the same time, each with its own AI agent. No stashing, no branch switching, no conflicts.

One window per task. A natural mental model. Each has its own terminal state, editor session, dev server, and AI agent. Context switching is switching tabs.

Automated setup. New worktrees start broken (no .env, no node_modules, no dev server). workmux can copy config files, symlink dependencies, and run install commands on creation.

One-command cleanup. workmux merge handles the full lifecycle: merge the branch, delete the worktree, close the tmux window, remove the local branch.

Terminal workflow. Build on your terminal setup instead of yet another agentic GUI that won't exist next year. If you don't have one yet, tmux might be worth picking up.

New to worktrees? See Why git worktrees?

Features

• Create git worktrees with matching tmux windows in a single command (add)
• Merge branches and clean up everything (worktree, tmux window, branches) in one command (merge)
• Dashboard for monitoring agents, reviewing changes, and sending commands
• Sidebar for a persistent, at-a-glance view of all agents across tmux windows
• Delegate tasks to worktree agents with the /worktree skill
• Display agent status in tmux window names
• Automatically set up your preferred tmux pane layout (editor, shell, watchers, etc.)
• Run post-creation hooks (install dependencies, setup database, etc.)
• Copy or symlink configuration files (.env, node_modules) into new worktrees
• Sandbox agents in containers or VMs for enhanced security
• Automatic branch name generation from prompts using LLM
• Shell completions

What people say

• "I've been using (and loving) workmux which brings together tmux, git worktrees, and CLI agents into an opinionated workflow." - Coolin96 on Hacker News
• "Thank you so much for your work with workmux! It's a tool I've been wanting to exist for a long time." - rstacruz on GitHub
• "It's become my daily driver - the perfect level of abstraction over tmux + git, without getting in the way or obscuring the underlying tooling." - cisaacstern on GitHub
• "I have to mention workmux at every opportunity because it's the perfect glue between worktrees, agents and tmux windows." - dedbrizz on Threads
• "Since I discovered workmux I'm cooking. Amazing parallel-agent driver if you like tmux and want to keep your config." - MatijaSosic on X
• "Using workmux with a well-configured tmux has been a breath of fresh air" - sbeirakh_il on X
• "I've been using it for about a month now, and it's been nothing but great." - gabrielrockson_ on X
• "I still don't see the need for Herdr. Workmux adds busy/question/done status, manages worktrees by itself, and etc. It lives on an already existing tmux setup." - 13hcoks on X
• "Want modern terminal workspace features without abandoning your setup? Here is how to keep Tmux and boost your workflow using Workmux." - Sam Natale on YouTube

Installation

Bash YOLO

curl -fsSL https://raw.githubusercontent.com/raine/workmux/main/scripts/install.sh | bash

Homebrew (macOS/Linux)

brew install raine/workmux/workmux

cargo install workmux

mise use -g cargo:raine/workmux

nix profile install github:raine/workmux

For manual installation, see pre-built binaries.

Quick start

[!NOTE] workmux requires a terminal multiplexer. Make sure you have tmux (or WezTerm / Kitty / Zellij) installed and running before you start. See My tmux setup if you need a starting point.

1. Initialize configuration (optional):

   workmux init
   

   This creates a .workmux.yaml file to customize your workflow (pane layouts, setup commands, file operations, etc.). workmux works out of the box with sensible defaults, so this step is optional.

2. Create a new worktree and tmux window:

   workmux add new-feature
   

   This will:

   • Create a git worktree at <project_root>/../<project_name>__worktrees/new-feature
   • Copy config files and symlink dependencies (if configured)
   • Run any post_create setup commands
   • Create a tmux window named wm-new-feature (the prefix is configurable)
   • Set up your configured or the default tmux pane layout
   • Automatically switch your tmux client to the new window

3. Do your thing

4. Finish and clean up

   Local merge: Run workmux merge to merge into the base branch and clean up in one step.

   PR workflow: Push and open a PR. After it's merged, run workmux remove to clean up.

Configuration

workmux uses a two-level configuration system:

• Global (~/.config/workmux/config.yaml): Personal defaults for all projects
• Project (.workmux.yaml): Project-specific overrides

Project settings override global settings. When you run workmux from a subdirectory, it walks upward to find the nearest .workmux.yaml, allowing nested configs for monorepos. See the Monorepos guide for details. For hook lists (post_create, pre_merge, pre_remove) and file operation lists (files.copy, files.symlink), you can use "<global>" to include global values alongside project-specific ones. Other settings like panes are replaced entirely when defined in the project config.

Global configuration example

~/.config/workmux/config.yaml:

nerdfont: true # Enable nerdfont icons (prompted on first run)
merge_strategy: rebase # Make workmux merge do rebase by default
merge_keep: true # Keep worktree, window, and branch after merge by default
agent: claude

panes:
  - command: <agent> # Start the configured agent (e.g., claude)
    focus: true
  - split: horizontal # Second pane with default shell

Project configuration example

.workmux.yaml:

post_create:
  - '<global>'
  - mise use

files:
  symlink:
    - '<global>' # Include global symlinks (node_modules)
    - .pnpm-store # Add project-specific symlink

panes:
  - command: pnpm install
    focus: true
  - command: <agent>
    split: horizontal
  - command: pnpm run dev
    split: vertical

For a real-world example, see workmux's own .workmux.yaml.

Configuration options

Most options have sensible defaults. You only need to configure what you want to customize.

Basic options

Set base_branch: auto to create independent work streams from each repository's effective main branch. Workmux uses configured main_branch, then the local origin/HEAD, main, or master. Detection uses local Git state and does not fetch. Omitting base_branch continues to create branches from the checked-out branch.

Naming options

worktree_naming strategies:

• full: Use the full branch name (slashes become dashes)
• basename: Use only the part after the last / (e.g., prj-123/feature → feature)

Panes

Define your multiplexer pane layout with the panes array. For multiple windows in session mode, use windows instead (they are mutually exclusive).

panes:
  - command: <agent>
    name: agent
    focus: true
  - command: npm run dev
    name: dev
    split: horizontal
    size: 15

Each pane supports:

Agent placeholders

• <agent>: resolves to the configured agent (from agent config or --agent flag)

Built-in agents (claude, gemini, agy, codex, opencode, kiro-cli, vibe, pi, omp, grok) are auto-detected when used as literal commands and receive prompt injection automatically, without needing the <agent> placeholder or a matching agent config:

panes:
  - command: 'claude --dangerously-skip-permissions'
    focus: true
  - command: 'codex --yolo'
    split: vertical

Each agent receives the prompt (via -p/-P/-e) using the correct format for that agent. Auto-detection matches the executable name regardless of flags or path.

Antigravity CLI support covers command detection, prompt injection, and status tracking via lifecycle hooks installed by workmux setup.

Named layouts

Define reusable pane arrangements in the layouts map and select one at add-time with -l/--layout:

layouts:
  design:
    panes:
      - command: <agent>
        focus: true
      - command: <agent:codex>
        split: vertical
  review:
    panes:
      - command: <agent>

workmux add my-feature -l design

When -l is used, the layout's panes replace the top-level panes for that worktree. All other config (hooks, files, agent, etc.) comes from the top-level as usual. The -l flag cannot be combined with --agent.

File operations

New worktrees are clean checkouts with no gitignored files (.env, node_modules, etc.). Use files to automatically copy or symlink what each worktree needs:

files:
  copy:
    - .env
  symlink:
    - .next/cache # Share build cache across worktrees

Both copy and symlink accept glob patterns.

To re-apply file operations to an existing worktree (e.g., after updating the config), run workmux sync-files from inside the worktree. Use --all to sync all worktrees at once.

Lifecycle hooks

Run commands at specific points in the worktree lifecycle, such as installing dependencies or running database migrations. All hooks run with the worktree directory as the working directory (or the nested config directory for nested configs) and receive environment variables: WM_HANDLE, WM_WORKTREE_PATH, WM_PROJECT_ROOT, WM_CONFIG_DIR.

WM_CONFIG_DIR points to the directory containing the .workmux.yaml that was used, which may differ from WM_WORKTREE_PATH when using nested configs.

Example:

post_create:
  - direnv allow

pre_merge:
  - just check

Agent status icons

Customize the icons shown in tmux window names:

status_icons:
  working: '🤖' # Agent is processing
  waiting: '💬' # Agent needs input (auto-clears on focus)
  done: '✅' # Agent finished (auto-clears on focus)

Agents in "working" status that produce no pane output for 10 seconds are automatically detected as interrupted.

Set status_format: false to disable automatic tmux format modification

Default behavior

• Worktrees are created in <project>__worktrees as a sibling directory to your project by default
• If no panes configuration is defined, workmux provides opinionated defaults:
  • For projects with a CLAUDE.md file: Opens the configured agent (see agent option) in the first pane, defaulting to claude if none is set.
  • For all other projects: Opens your default shell.
  • Both configurations include a second pane split horizontally
• post_create commands are optional and only run if you configure them

Automatic setup with panes

Use the panes configuration to automate environment setup. Unlike post_create hooks which must finish before the tmux window opens, pane commands execute immediately within the new window.

This can be used for:

• Installing dependencies: Run npm install or cargo build in a focused pane to monitor progress.
• Starting services: Launch dev servers, database containers, or file watchers automatically.
• Running agents: Initialize AI agents with specific context.

Since these run in standard tmux panes, you can interact with them (check logs, restart servers) just like a normal terminal session.

Running dependency installation (like pnpm install) in a pane command rather than post_create has a key advantage: you get immediate access to the tmux window while installation runs in the background. With post_create, you'd have to wait for the install to complete before the window even opens. This also means AI agents can start working immediately in their pane while dependencies install in parallel.

panes:
  # Pane 1: Install dependencies, then start dev server
  - command: pnpm install && pnpm run dev

  # Pane 2: AI agent
  - command: <agent>
    split: horizontal
    focus: true

Directory structure

Here's how workmux organizes your worktrees by default:

~/projects/
├── my-project/               <-- Main project directory
│   ├── src/
│   ├── package.json
│   └── .workmux.yaml
│
└── my-project__worktrees/    <-- Worktrees created by workmux
    ├── feature-A/            <-- Isolated workspace for 'feature-A' branch
    │   ├── src/
    │   └── package.json
    │
    └── bugfix-B/             <-- Isolated workspace for 'bugfix-B' branch
        ├── src/
        └── package.json

Each worktree is a separate working directory for a different branch, all sharing the same git repository. This allows you to work on multiple branches simultaneously without conflicts.

You can customize the worktree directory location using the worktree_dir configuration option (see Configuration options). The value supports ~ for the home directory and a {project} placeholder that resolves to the main worktree's directory name. This lets a single global config namespace every repo's worktrees under one root, e.g. worktree_dir: ~/.workmux/{project}.

Shell alias (recommended)

For faster typing, alias workmux to wm:

alias wm='workmux'

Commands

• add - Create a new worktree and tmux window
• merge - Merge a branch and clean up everything
• rebase - Rebase a worktree branch onto its base branch
• remove - Remove worktrees without merging
• list - List all worktrees with status
• open - Open a tmux window for an existing worktree
• close - Close a worktree's tmux window (keeps worktree)
• resurrect - Restore worktree windows after a crash
• path - Get the filesystem path of a worktree
• dashboard - Show TUI dashboard of all active agents
• sidebar - Toggle a compact agent status sidebar in tmux
• reap-agents - Exit tracked agent processes older than a threshold
• config edit - Edit the global configuration file
• init - Generate configuration file
• sandbox - Manage sandbox backends (container/Lima)
• claude prune - Clean up stale Claude Code entries
• completions - Generate shell completions
• docs - Show detailed documentation

workmux add <branch-name>

Creates a new git worktree with a matching tmux window and switches you to it immediately. If the branch doesn't exist, it will be created automatically.

• <branch-name>: Name of the branch to create or switch to, a remote branch reference (e.g., origin/feature-branch), or a GitHub fork reference (e.g., user:branch). Remote and fork references are automatically fetched and create a local branch with the derived name. Fork references derive the local branch as user-branch (e.g., someuser:feature creates local branch someuser-feature). Optional when using --pr.

Options

• --base <branch|commit|tag>: Specify a base branch, commit, or tag to branch from when creating a new branch. Overrides base_branch config. The config value auto uses the effective main branch. Without either setting, workmux uses the currently checked out branch.
• --pr <number|url>: Checkout a GitHub pull request by its number or full URL into a new worktree.
  • Requires the gh command-line tool to be installed and authenticated.
  • URLs use the form https://github.com/<owner>/<repository>/pull/<number>.
  • The local branch name defaults to the PR's head branch name, but can be overridden (e.g., workmux add custom-name --pr 123).
  • If that local branch already exists and has no worktree, it is reused.
• -A, --auto-name: Generate branch name from prompt using LLM. See Automatic branch name generation.
• --name <name>: Override the worktree directory and tmux window name. By default, these are derived from the branch name (slugified). Cannot be used with multi-worktree generation (--count, --foreach, or multiple --agent).
• -b, --background: Create the tmux window in the background without switching to it. Useful with --prompt-editor.
• -w, --with-changes: Move uncommitted changes from the current worktree to the new worktree, then reset the original worktree to a clean state. Useful when you've started working on main and want to move your branches to a new worktree.
• --patch: Interactively select which changes to move (requires --with-changes). Opens an interactive prompt for selecting hunks to stash.
• -u, --include-untracked: Also move untracked files (requires --with-changes). By default, only staged and modified tracked files are moved.
• -p, --prompt <text>: Provide an inline prompt that will be automatically passed to AI agent panes.
• -P, --prompt-file <path>: Provide a path to a file whose contents will be used as the prompt.
• -e, --prompt-editor: Open your $EDITOR (or $VISUAL) to write the prompt interactively.
• --prompt-file-only: Write the prompt file to the worktree without injecting it into agent commands. No agent pane is required. Useful when your editor has an embedded agent that reads .workmux/PROMPT-*.md directly.
• -l, --layout <name>: Use a named pane layout from config instead of the default panes. Cannot be combined with --agent.
• -a, --agent <name>: The agent(s) to use for the worktree(s). Can be specified multiple times to generate a worktree for each agent. Overrides the agent from your config file.
• -W, --wait: Block until the created tmux window is closed. Useful for scripting when you want to wait for an agent to complete its work. The agent can signal completion by running workmux remove --keep-branch.
• -o, --open-if-exists: If a worktree for the branch already exists, open it instead of failing. Similar to tmux new-session -A. Useful when you don't know or care whether the worktree already exists.
• -s, --session: Create a tmux session instead of a window. See Session mode for details.
• --dry-run: Print the resolved worktree path, branch, base, multiplexer target, file operations, and post-create hooks without creating or modifying anything.
• --config <path>: Use an alternate config file for this invocation. Still merges with global config.
• --fork: Fork the last conversation from the current worktree into the new one. The agent resumes with the forked conversation context. Use --fork=<session-id> to fork a specific session (prefix matching supported). Supports Claude Code and Codex.

Skip options

These options allow you to skip expensive setup steps when they're not needed (e.g., for documentation-only changes):

• -H, --no-hooks: Skip running post_create commands
• -F, --no-file-ops: Skip file copy/symlink operations (e.g., skip linking node_modules)
• -C, --no-pane-cmds: Skip executing pane commands (panes open with plain shells instead)

What happens

1. Determines the handle for the worktree by slugifying the branch name (e.g., feature/auth becomes feature-auth). This can be overridden with the --name flag.
2. Creates a git worktree at <worktree_dir>/<handle> (the worktree_dir is configurable and defaults to a sibling directory of your project)
3. Runs any configured file operations (copy/symlink)
4. Executes post_create commands if defined (runs before the tmux window opens, so keep them fast)
5. Creates a new tmux window named <window_prefix><handle> (e.g., wm-feature-auth with window_prefix: wm-)
6. Sets up your configured tmux pane layout
7. Automatically switches your tmux client to the new window

In tmux window mode without --parent-session, $TMUX_PANE identifies the calling pane and its parent session. When $TMUX_PANE is absent or stale, workmux uses live pane working directories when their closest matches identify one session. A tmux server with one session is the final fallback. Remaining ambiguity requires --parent-session <name>. The working directory selects the Git repository and only provides conservative evidence for tmux placement.

Examples

Basic usage

# Create a new branch and worktree
workmux add user-auth

# Use an existing branch
workmux add existing-work

# Create a new branch from a specific base
workmux add hotfix --base production

# Create a worktree from a remote branch (creates local branch "user-auth-pr")
workmux add origin/user-auth-pr

# Remote branches with slashes work too (creates local branch "feature/foo")
workmux add origin/feature/foo

# Preview the resolved plan without creating anything
workmux add feature/parallel-task --dry-run

# Create a worktree in the background without switching to it
workmux add feature/parallel-task --background

# Use a custom name for the worktree directory and tmux window
workmux add feature/long-descriptive-branch-name --name short

# Open existing worktree if it exists, create if it doesn't (idempotent)
workmux add my-feature -o

Checking out pull requests and fork branches

# Checkout PR #123. The local branch will be named after the PR's branch.
workmux add --pr 123

# Checkout a pull request from its full GitHub URL with a custom local branch
workmux add --pr https://github.com/raine/workmux/pull/456 fix/api-bug

# Checkout a fork branch using GitHub's owner:branch format (copy from GitHub UI)
# Creates local branch "someuser-feature-branch" tracking the fork
workmux add someuser:feature-branch

Moving changes to a new worktree

# Move uncommitted changes to a new worktree (including untracked files)
workmux add feature/new-thing --with-changes -u

# Move only staged/modified files (not untracked files)
workmux add fix/bug --with-changes

# Interactively select which changes to move
workmux add feature/partial --with-changes --patch

AI agent prompts

# Create a worktree with an inline prompt for AI agents
workmux add feature/ai --prompt "Implement user authentication with OAuth"

# Override the default agent for a specific worktree
workmux add feature/testing -a gemini

# Create a worktree with a prompt from a file
workmux add feature/refactor --prompt-file task-description.md

# Open your editor to write a prompt interactively
workmux add feature/new-api --prompt-editor

# Write prompt file only (for editors with embedded agents like neovim)
workmux add feature/task -P task.md --prompt-file-only

Skipping setup steps

# Skip expensive setup for documentation-only changes
workmux add docs-update --no-hooks --no-file-ops --no-pane-cmds

# Skip just the file operations (e.g., you don't need node_modules)
workmux add quick-fix --no-file-ops

Scripting with --wait

# Block until the agent completes and closes the window
workmux add feature/api --wait -p "Implement the REST API, then run: workmux remove --keep-branch"

# Use in a script to run sequential agent tasks
for task in task1.md task2.md task3.md; do
  workmux add "task-$(basename $task .md)" --wait -P "$task"
done

AI agent integration

When you provide a prompt via --prompt, --prompt-file, or --prompt-editor, workmux automatically injects the prompt into panes running the configured agent command (e.g., claude, codex, opencode, gemini, agy, kiro-cli, vibe, pi, omp, grok, or whatever you've set via the agent config or --agent flag) without requiring any .workmux.yaml changes:

• Panes with a command matching the configured agent are automatically started with the given prompt.
• You can keep your .workmux.yaml pane configuration simple (e.g., panes: [{ command: "<agent>" }]) and let workmux handle prompt injection at runtime.

This means you can launch AI agents with task-specific prompts without modifying your project configuration for each task.

If your editor has an embedded agent (e.g., neovim with an agent plugin), use --prompt-file-only to write the prompt to .workmux/PROMPT-<branch>.md without requiring an agent pane. Your editor can then detect and consume the file on startup. This can also be set permanently in config with prompt_file_only: true.

Automatic branch name generation

The --auto-name (-A) flag generates a branch name from your prompt using an LLM. The tool used depends on your configuration:

1. auto_name.command is set: uses that command as-is
2. config.agent is a known agent (claude, gemini, agy, codex, opencode, kiro-cli, vibe, pi, omp): uses the agent's CLI with a fast/cheap model
3. Neither: falls back to the llm CLI tool

Usage

# Opens editor for prompt, generates branch name
workmux add -A

# With inline prompt
workmux add -A -p "Add OAuth authentication"

# With prompt file
workmux add -A -P task-spec.md

Requirements

When agent is configured (e.g., agent: claude), workmux automatically uses that agent's CLI for branch naming. No additional setup is required beyond having the agent installed.

If no agent is configured and no auto_name.command is set, workmux uses the llm CLI tool:

pipx install llm

Configure a model (e.g., OpenAI):

llm keys set openai
# Or use a local model
llm install llm-ollama

If you set auto_name.command, llm is not required.

Agent profile defaults

When an agent is configured, these commands are used automatically:

To override back to llm when an agent is configured, set auto_name.command: "llm".

Configuration

Optionally configure auto-name behavior in .workmux.yaml:

auto_name:
  model: 'gemini-2.5-flash-lite'
  background: true # Always run in background when using --auto-name
  system_prompt: |
    Generate a concise git branch name based on the task description.

    Rules:
    - Use kebab-case (lowercase with hyphens)
    - Keep it short: 1-3 words, max 4 if necessary
    - Focus on the core task/feature, not implementation details
    - No prefixes like feat/, fix/, chore/

    Examples of good branch names:
    - "Add dark mode toggle" → dark-mode
    - "Fix the search results not showing" → fix-search
    - "Refactor the authentication module" → auth-refactor
    - "Add CSV export to reports" → export-csv
    - "Shell completion is broken" → shell-completion

    Output ONLY the branch name, nothing else.

To use a specific tool, set auto_name.command. The command string is split into program and arguments, and the composed prompt is piped via stdin. Valid Git branch names are preserved, including slash-separated prefixes such as fix/issue-123.

auto_name:
  command: 'claude -p'

# Force llm even when an agent is configured
auto_name:
  command: 'llm'

Recommended models for fast, cheap branch name generation (with llm):

• gemini-2.5-flash-lite (recommended)
• gpt-5-nano

Parallel workflows & multi-worktree generation

workmux can generate multiple worktrees from a single add command, which is ideal for running parallel experiments or delegating tasks to multiple AI agents. This is controlled by four mutually exclusive modes:

• (-a, --agent): Create a worktree for each specified agent.
• (-n, --count): Create a specific number of worktrees.
• (--foreach): Create worktrees based on a matrix of variables.
• stdin: Pipe input lines to create worktrees with templated prompts.

When using any of these modes, branch names are generated from a template, and prompts are templated with variables. Single-worktree prompts are passed through literally, so common syntax like GitHub Actions ${{ ... }} does not need to be escaped.

Multi-worktree options

• -a, --agent <name>: When used multiple times, creates one worktree for each agent.
• -n, --count <number>: Creates <number> worktree instances. Can be combined with a single --agent flag to apply that agent to all instances.
• --foreach <matrix>: Creates worktrees from a variable matrix string. The format is "var1:valA,valB;var2:valX,valY". All value lists must have the same length. Values are paired by index position (zip, not Cartesian product): the first value of each variable goes together, the second with the second, etc.
• --branch-template <template>: A MiniJinja (Jinja2-compatible) template for generating branch names.
  • Available variables: {{ base_name }}, {{ agent }}, {{ num }}, {{ index }}, {{ input }} (stdin), and any variables from --foreach.
  • Default: {{ base_name }}{% if agent %}-{{ agent | slugify }}{% endif %}{% for key, value in foreach_vars %}-{{ value | slugify }}{% endfor %}{% if num %}-{{ num }}{% endif %}
• --max-concurrent <number>: Limits how many worktrees run simultaneously. When set, workmux creates up to <number> worktrees, then waits for any window to close before starting the next. Requires agents to close windows when done (e.g., via prompt instruction to run workmux remove --keep-branch).

Prompt templating

When generating multiple worktrees, any prompt provided via -p, -P, or -e is treated as a MiniJinja template. You can use variables from your generation mode to create unique prompts for each agent or instance. For ordinary single-worktree add commands, prompt text is not templated.

Variable matrices in prompt files

Instead of passing --foreach on the command line, you can specify the variable matrix directly in your prompt file using YAML frontmatter. This is more convenient for complex matrices and keeps the variables close to the prompt that uses them.

Format:

Create a prompt file with YAML frontmatter at the top, separated by ---:

Example 1: mobile-task.md

---
foreach:
  platform: [iOS, Android]
  lang: [swift, kotlin]
---

Build a {{ platform }} app using {{ lang }}. Implement user authentication and
data persistence.

workmux add mobile-app --prompt-file mobile-task.md
# Generates worktrees: mobile-app-ios-swift, mobile-app-android-kotlin

Example 2: agent-task.md (using agent as a foreach variable)

---
foreach:
  agent: [claude, gemini]
---

Implement the dashboard refactor using your preferred approach.

workmux add refactor --prompt-file agent-task.md
# Generates worktrees: refactor-claude, refactor-gemini

Behavior:

• Variables from the frontmatter are available in both the prompt template and the branch name template
• All value lists must have the same length, and values are paired by index position (same zip behavior as --foreach)
• CLI --foreach overrides frontmatter with a warning if both are present
• Works with both --prompt-file and --prompt-editor

Stdin input

You can pipe input lines to workmux add to create multiple worktrees. Each line becomes available as the {{ input }} template variable in your prompt. This is useful for batch-processing tasks from external sources.

Plain text: Each line becomes {{ input }}

echo -e "api\nauth\ndatabase" | workmux add refactor -P task.md
# {{ input }} = "api", "auth", "database"

JSON lines: Each key becomes a template variable

gh repo list --json url,name --jq -c '.[]' | workmux add analyze \
  --branch-template '{{ base_name }}-{{ name }}' \
  -P prompt.md
# Line: {"url":"https://github.com/raine/workmux","name":"workmux"}
# Variables: {{ url }}, {{ name }}, {{ input }} (raw JSON line)

This lets you structure data upstream with jq and use meaningful branch names while keeping the full URL available in your prompt.

Behavior:

• Empty lines and whitespace-only lines are filtered out
• Stdin input cannot be combined with --foreach (mutually exclusive)
• JSON objects (lines starting with {) are parsed and each key becomes a variable
• {{ input }} always contains the raw line
• If JSON contains an input key, it overwrites the raw line value

Examples

# Create one worktree for claude and one for gemini with a focused prompt
workmux add my-feature -a claude -a gemini -p "Implement the new search API integration"
# Generates worktrees: my-feature-claude, my-feature-gemini

# Create 2 instances of the default agent
workmux add my-feature -n 2 -p "Implement task #{{ num }} in TASKS.md"
# Generates worktrees: my-feature-1, my-feature-2

# Create worktrees from a variable matrix
workmux add my-feature --foreach "platform:iOS,Android" -p "Build for {{ platform }}"
# Generates worktrees: my-feature-ios, my-feature-android

# Create agent-specific worktrees via --foreach
workmux add my-feature --foreach "agent:claude,gemini" -p "Implement the dashboard refactor"
# Generates worktrees: my-feature-claude, my-feature-gemini

# Use frontmatter in a prompt file for cleaner syntax
# task.md contains:
# ---
# foreach:
#   env: [staging, production]
#   task: [smoke-tests, integration-tests]
# ---
# Run {{ task }} against the {{ env }} environment
workmux add testing --prompt-file task.md
# Generates worktrees: testing-staging-smoke-tests, testing-production-integration-tests

# Pipe input from stdin to create worktrees
# review.md contains: Review the {{ input }} module for security issues.
echo -e "auth\npayments\napi" | workmux add review -A -P review.md
# Generates worktrees with LLM-generated branch names for each module

Recipe: Batch processing with worker pools

Combine stdin input, prompt templating, and concurrency limits to create a worker pool that processes items from an external command.

Example: Generate test scaffolding for untested files

# generate-tests.md contains:
# Read the file at {{ input }} and generate a test suite covering
# the exported functions. Focus on happy path and edge cases.
# When done, run: workmux remove --keep-branch

find src/utils -name "*.ts" ! -name "*.test.ts" | \
  workmux add add-tests \
    --branch-template '{{ base_name }}-{{ index }}' \
    --prompt-file generate-tests.md \
    --max-concurrent 3 \
    --background

• find ... lists files without tests (one per line) piped to stdin
• --branch-template uses {{ index }} for unique branch names
• --prompt-file uses {{ input }} to pass each file path to the agent
• --max-concurrent 3 limits parallel agents to avoid rate limits
• --background runs without switching focus

workmux merge [branch-name]

Merges a branch into a target branch (main by default) and automatically cleans up all associated resources (worktree, tmux window, and local branch).

[!TIP] merge vs remove: Use merge when you want to merge directly without a pull request. If your workflow uses pull requests, use remove to clean up after your PR is merged on the remote.

• [branch-name]: Optional name of the branch to merge. If omitted, automatically detects the current branch from the worktree you're in.

Options

• --into <branch>: Merge into the specified branch instead of the main branch. Useful for stacked PRs, git-flow workflows, or merging subtasks into a parent feature branch. If the target branch has its own worktree, the merge happens there; otherwise, the main worktree is used.
• --ignore-uncommitted: Commit any staged changes before merging without opening an editor
• --keep, -k: Keep the worktree, window, and branch after merging (skip cleanup). Useful when you want to verify the merge before cleaning up.
• --cleanup: Clean up after merging, overriding merge_keep: true.
• --notification: Show a system notification on successful merge. Useful when delegating merge to an AI agent and you want to be notified when it completes.

Merge strategies

By default, workmux merge performs a standard merge commit (configurable via merge_strategy). You can override the configured behavior with these mutually exclusive flags:

• --rebase: Rebase the feature branch onto the target before merging (creates a linear history via fast-forward merge). If conflicts occur, you'll need to resolve them manually in the worktree and run git rebase --continue.
• --squash: Squash all commits from the feature branch into a single commit on the target. You'll be prompted to provide a commit message in your editor.

If you don't want to have merge commits in your main branch, use the rebase merge strategy, which does --rebase by default.

# ~/.config/workmux/config.yaml
merge_strategy: rebase

To keep the worktree, window, and branch after every merge unless overridden, set:

merge_keep: true

Use workmux merge --cleanup to clean up for a single merge when this default is enabled.

What happens

1. Determines which branch to merge (specified branch or current branch if omitted)
2. Determines the target branch (--into or main branch from config)
3. Checks for uncommitted changes (errors if found, unless --ignore-uncommitted is used)
4. Commits staged changes if present (unless --ignore-uncommitted is used)
5. Merges your branch into the target using the selected strategy (default: merge commit)
6. Deletes the tmux window unless keep behavior is enabled via --keep or merge_keep: true
7. Removes the worktree unless keep behavior is enabled via --keep or merge_keep: true
8. Deletes the local branch unless keep behavior is enabled via --keep or merge_keep: true

Typical workflow

When you're done working in a worktree, simply run workmux merge from within that worktree's tmux window. The command will automatically detect which branch you're on, merge it into main, and close the current window as part of cleanup.

Examples

# Merge branch into main (default: merge commit)
workmux merge user-auth

# Merge the current worktree you're in
# (run this from within the worktree's tmux window)
workmux merge

# Rebase onto main before merging for a linear history
workmux merge user-auth --rebase

# Squash all commits into a single commit
workmux merge user-auth --squash

# Merge but keep the worktree/window/branch to verify before cleanup
workmux merge user-auth --keep
# ... verify the merge in main ...
workmux remove user-auth  # clean up later when ready

# Merge into a different branch (stacked PRs)
workmux merge feature/subtask --into feature/parent

workmux rebase [name]

Rebases a worktree branch onto its saved base branch. If the branch does not have a saved local base branch, workmux rebases onto the configured main branch.

• [name]: Optional worktree name or branch. If omitted, workmux detects the current worktree from the current directory.

What happens

1. Determines which worktree branch to rebase
2. Reads the saved base branch recorded when the worktree was created
3. Falls back to the configured main branch when the saved base is not a local branch
4. Runs git rebase <base> inside the worktree
5. Leaves the worktree, window, and branch in place

Examples

workmux rebase user-auth
workmux rebase

workmux remove [name]... (alias: rm)

Removes worktrees, tmux windows, and branches without merging (unless you keep the branches). Useful for abandoning work or cleaning up experimental branches. Supports removing multiple worktrees in a single command.

• [name]...: One or more worktree names (the directory names). Defaults to current directory name if omitted.

Options

• --all: Remove all worktrees at once (except the main worktree). Prompts for confirmation unless --force is used. Safely skips worktrees with uncommitted changes or unmerged commits.
• --gone: Remove worktrees whose upstream remote branch has been deleted (e.g., after a PR is merged on GitHub). Automatically runs git fetch --prune first.
• --force, -f: Skip confirmation prompt and ignore uncommitted changes
• --keep-branch, -k: Remove only the worktree and tmux window while keeping the local branch

Examples

# Remove the current worktree (run from within the worktree)
workmux remove

# Remove a specific worktree with confirmation if unmerged
workmux remove experiment

# Remove multiple worktrees at once
workmux rm feature-a feature-b feature-c

# Remove multiple worktrees with force (no confirmation)
workmux rm -f old-work stale-branch

# Use the alias
workmux rm old-work

# Remove worktree/window but keep the branch
workmux remove --keep-branch experiment

# Force remove without prompts
workmux rm -f experiment

# Remove worktrees whose remote branches were deleted (e.g., after PR merge)
workmux rm --gone

# Force remove all gone worktrees (no confirmation)
workmux rm --gone -f

# Remove all worktrees at once
workmux rm --all

workmux rename [old-name] <new-name>

Renames a worktree's directory, its tmux window or session, and the per-worktree workmux metadata. Optionally also renames the underlying git branch.

• [old-name]: Optional current worktree name. Defaults to the current worktree when run from inside one.
• <new-name>: The new handle (directory name and tmux window/session base name).

Options

• --branch, -b: Also rename the underlying git branch to match <new-name>. Fails if the worktree is on a detached HEAD.

Examples

# Rename a worktree from inside it
workmux rename feature-new

# Rename a specific worktree by name
workmux rename feature-old feature-new

# Also rename the branch to match
workmux rename feature-old feature-new --branch

Rename is non-destructive: uncommitted changes and untracked files are preserved. The main worktree cannot be renamed. Collisions (existing target path, existing tmux target, or existing branch) are rejected before any changes are made.

workmux list (alias: ls)

Lists git worktrees with their agent status, multiplexer window status, and merge status. Supports filtering by worktree handle or branch name.

Arguments

• [worktree-or-branch...]: Filter by worktree handle (directory name) or branch name. Accepts multiple values. When omitted, shows all worktrees.

Options

• --pr: Show GitHub PR status for each worktree. Requires the gh CLI to be installed and authenticated. Note that it shows pull requests' statuses with Nerd Font icons, which requires Nerd Font compatible font installed.
• --all: Include worktrees from every repository represented by a tracked agent in the current multiplexer instance. Repositories without tracked agents cannot be discovered.
• --json: Output as JSON. Produces a JSON array of objects with fields: project, project_path, handle, branch, path, is_main, mode, has_uncommitted_changes, is_open, agent_statuses, created_at.

Examples

# List all worktrees
workmux list

# List with PR status
workmux list --pr

# Output as JSON for scripting
workmux list --json

# List tracked projects in one JSON response
workmux list --all --json

# Filter to specific worktrees
workmux list my-feature
workmux list feature-auth feature-api

Example output

BRANCH      AGE  AGENT  MUX  UNMERGED  PATH
main        -    -      -    -         ~/project
user-auth   2h   🤖     ✓    -         ~/project__worktrees/user-auth
bug-fix     3d   ✅     ✓    ●         ~/project__worktrees/bug-fix
api-work    1w   -      ✓    -         ~/project__worktrees/api-work

Key

• AGE shows how old the worktree is (e.g., 2h, 3d, 1w, 2mo)
• AGENT shows the current agent status (see status tracking):
  • 🤖 = working, 💬 = waiting for input, ✅ = finished
  • Multiple agents per worktree show a count (e.g., 2🤖 1✅)
• ✓ in MUX column = multiplexer window exists for this worktree
• ● in UNMERGED column = branch has commits not merged into main
• - = not applicable

workmux status [worktree...]

Queries tracked agents in the current repository or in explicitly requested worktrees. Use project:handle to target a worktree in another project.

• --all: Include tracked agents across every repository in the current multiplexer instance. This option conflicts with explicit worktree targets.
• --json: Emit an observation object containing the selected multiplexer context, repository and target scope, state-file counts, the reconciled agent count before scope filtering, and the scoped agents array. Agent entries include project and project_path when their Git repository can be resolved.
• --git: Include staged, unstaged, and unmerged commit information.

Automation must check the command exit status before interpreting an empty agents array. See the status command reference for the JSON contract and fail-closed rules.

workmux config edit

Opens the global configuration file (~/.config/workmux/config.yaml) in your preferred editor. Uses $VISUAL, $EDITOR, or falls back to vi. Creates the file with commented-out defaults if it doesn't exist yet.

workmux config path

Prints the path to the global configuration file. Useful for scripting.

workmux config reference

Prints the default configuration file with all options documented. Useful for discovering available options or piping to an AI agent for context.

workmux init

Generates .workmux.yaml with example configuration and "<global>" placeholder usage.

workmux open [name...]

Opens or switches to a tmux window for a pre-existing git worktree. If the window already exists, switches to it. If not, creates a new window with the configured pane layout and environment. Accepts multiple names to open several worktrees at once.

• [name...]: One or more worktree names (the directory name, which is also the tmux window name without the prefix). Optional with --new when run from inside a worktree.

Options

• -n, --new: Force opening in a new window even if one already exists. Creates a duplicate window with a suffix (e.g., -2, -3). Useful for having multiple terminal views into the same worktree. In tmux, the duplicate appears immediately to the right of the window identified by $TMUX_PANE.
• -s, --session: Open in session mode, overriding the stored mode. Persists the mode change for subsequent opens. Cannot be combined with --new. Only supported with tmux.
• --config <path>: Use an alternate config file for this invocation. Still merges with global config.
• --run-hooks: Re-runs the post_create commands (these block window creation).
• --force-files: Re-applies file copy/symlink operations. Useful for restoring a deleted .env file.
• -p, --prompt <text>: Provide an inline prompt for AI agent panes.
• -P, --prompt-file <path>: Provide a path to a file containing the prompt.
• -c, --continue: Resume the agent's most recent conversation in this worktree. Injects the appropriate flag for the configured agent (e.g., --continue for Claude, --resume for Gemini).
• -e, --prompt-editor: Open your editor to write the prompt interactively.
• --prompt-file-only: Write the prompt file without injecting it into agent commands.

What happens

1. Verifies that a worktree with <name> exists.
2. If a tmux window exists and --new is not set, switches to it.
3. Otherwise, creates a new tmux window (with suffix if duplicating). In tmux, duplicate windows appear immediately to the right of the window where the command runs.
4. (If specified) Runs file operations and post_create hooks.
5. Sets up your configured tmux pane layout.
6. Automatically switches your tmux client to the new window.

Examples

# Open or switch to a window for an existing worktree
workmux open user-auth

# Force open a second window for the same worktree (creates user-auth-2)
workmux open user-auth --new

# Open a new window for the current worktree (run from within the worktree)
workmux open --new

# Open in session mode (converts from window mode if needed)
workmux open user-auth --session

# Resume the agent's last conversation
workmux open user-auth --continue

# Resume and send a follow-up prompt
workmux open user-auth --continue -p "Continue implementing the login flow"

# Open and re-run dependency installation
workmux open user-auth --run-hooks

# Open and restore configuration files
workmux open user-auth --force-files

# Open multiple worktrees at once
workmux open user-auth api-refactor bugfix-login

workmux close [name]

Closes the tmux window for a worktree without removing the worktree or branch. This is useful when you want to temporarily close a window to reduce clutter or free resources, but plan to return to the work later.

• [name]: Optional worktree name (the directory name). Defaults to current directory if omitted.

Examples

# Close the window for a specific worktree
workmux close user-auth

# Close the current worktree's window (run from within the worktree)
workmux close

To reopen the window later, use workmux open.

Tip: You can also use tmux's native kill-window command (default: prefix + &) to close a worktree's window with the same effect.

workmux resurrect

Restores worktree windows after a tmux or computer crash. Uses persisted agent state files to detect which worktrees had active agents before the crash, then reopens them with --continue to resume agent conversations.

Options

• --dry-run: Show what would be restored without doing it.

Examples

# See what would be restored after a crash
workmux resurrect --dry-run

# Restore all worktrees that had agents running
workmux resurrect

How it works

1. Reads agent state files from ~/.local/state/workmux/agents/
2. Matches each state file's working directory to a git worktree in the current repo
3. Skips worktrees that are already open or no longer exist
4. Opens each matched worktree with --continue to resume the agent

workmux sync-files

Re-applies file operations (copy and symlink from files config) to existing worktrees. Useful when you add new entries to the files config or a symlink was accidentally deleted.

Options

• --all: Sync all worktrees instead of just the current one.

Examples

# Sync files to the current worktree
workmux sync-files

# Sync files to all worktrees
workmux sync-files --all

workmux path <name>

Prints the filesystem path of an existing worktree. Useful for scripting or quickly navigating to a worktree directory.

• <name>: Worktree name (the directory name).

Examples

# Get the path of a worktree
workmux path user-auth
# Output: /Users/you/project__worktrees/user-auth

# Use in scripts or with cd
cd "$(workmux path user-auth)"

# Copy a file to a worktree
cp config.json "$(workmux path feature-branch)/"

workmux dashboard

Opens a TUI dashboard showing all active AI agents across all tmux sessions. Useful for monitoring multiple parallel agents and quickly jumping between them.

Options

• -d, --diff: Open the diff view directly for the current worktree. Useful when you want to quickly review uncommitted changes without navigating through the agent list.
• -P, --preview-size <10-90>: Set preview pane size as percentage (larger = more preview, less table). Default: 60.
• -s, --session: Filter to only show agents in the current session. Useful for session-per-project workflows where each session maps to a different repository.
• -t, --tab <agents|worktrees>: Open directly on the specified tab.

[!IMPORTANT] This feature requires agent status tracking to be configured. Without it, no agents will appear in the dashboard.

Keybindings

Mouse controls

The dashboard captures mouse input while it is open. Click the Agents and Worktrees tabs to switch views, click a table row to select it, and double-click a row to jump to its agent or worktree. Right-click a row to open its action menu, then click an action or use j/k and Enter. Click a footer command to run it. Use the mouse wheel over a table to change the selection without wrapping, or over the live preview to scroll its output.

In diff view, use the wheel to scroll and click a file in the sidebar to jump to its diff. Visible diff and patch footer commands are clickable. Mouse capture is released when the dashboard exits.

Live preview

The bottom half shows a live preview of the selected agent's terminal output. The preview auto-scrolls to show the latest output, but you can scroll through history with Ctrl+u/Ctrl+d. Press i to enter input mode and type directly to the agent without leaving the dashboard.

Columns

• #: Quick jump key (1-9)
• Project: Project name (from __worktrees path or directory name)
• Agent: Worktree/window name
• Git: Diff stats showing branch changes (dim) and uncommitted changes (bright). Shows a rebase icon when a rebase is in progress.
• Status: Agent status icon (🤖 working, 💬 waiting, ✅ done, or "stale")
• Time: Time since last status change
• Title: Claude Code session title (auto-generated summary)

Sort modes

Press s to cycle through sort modes:

• Priority (default): Waiting > Done > Working > Stale
• Project: Group by project name, then by priority within each project
• Recency: Most recently updated first
• Natural: Original tmux order (by pane creation)

Your sort preference persists in the tmux session.

Session filter

Press F to toggle the session filter. When active, only agents in the current session are shown. This is useful for session-per-project workflows where each session maps to a repository. You can also start the dashboard with --session to default to session filtering. The preference persists across sessions.

Name filter

Press / to activate the name filter. Type to filter the agent list by project or worktree name (case-insensitive). Press Enter to accept the filter and return to normal navigation, or Esc to clear the filter. When a filter is active, it is shown in the footer bar.

Stale filter

Press f to toggle between showing all agents or hiding stale ones. The filter state persists across dashboard sessions within the same tmux server.

Diff view

Press d to view the diff for the selected agent. The diff view has two modes:

• WIP - Shows uncommitted changes (git diff HEAD)
• review - Shows all changes on the branch vs main (git diff main...HEAD)

Press Tab to toggle between modes. The footer displays which mode is active along with diff statistics showing lines added (+) and removed (-).

Patch mode

Patch mode (a from WIP diff) allows staging individual hunks like git add -p. This is useful for selectively staging parts of an agent's work.

When delta is installed, hunks are rendered with syntax highlighting for better readability.

Press y to stage the current hunk and advance to the next. Press n to skip without staging. The counter in the header shows your progress (e.g., [3/10]).

Press s to split the current hunk into smaller pieces when there are context lines between separate changes. Press u to undo the last staged hunk.

Press o to comment on the current hunk. This sends a message to the agent including the file path, line number, the diff hunk as context, and your comment. Useful for giving feedback like "This function should handle the error case".

Example tmux binding

Add to your ~/.tmux.conf for quick access:

bind C-s display-popup -h 30 -w 100 -E "workmux dashboard"

# Open directly on Worktrees tab
bind C-w display-popup -h 30 -w 100 -E "workmux dashboard --tab worktrees"

Then press prefix + Ctrl-s to open the dashboard as a tmux popup.

workmux sidebar

Toggles a live agent status sidebar on the left or top edge of all tmux windows. By default, each sidebar pane shows active agents across all tmux sessions with live status updates, providing an always-visible overview without taking over the full screen like the dashboard. Use workmux sidebar filter session to show only agents in the current tmux session.

workmux sidebar                       # Toggle sidebar on/off (all sessions)
workmux sidebar on                    # Ensure the global sidebar is running
workmux sidebar off                   # Ensure the global sidebar is stopped
workmux sidebar --session on          # Ensure it is running in this session
workmux sidebar --session off         # Ensure it is stopped in this session
workmux sidebar on --position top     # Enable with a top sidebar

The sidebar displays:

• Status icon (working/waiting/done with spinner animation)
• Project and worktree name (e.g. myproject/fix-bug)
• Elapsed time since last status change

With tmux mouse mode enabled (set -g mouse on), click an agent row or top-bar chip to jump to its pane, or scroll to navigate the list.

When the global sidebar is active, workmux sidebar --session hides it in the current tmux session only. Run the same command again to show it in that session again while keeping the global sidebar active elsewhere.

Configure placement, width, and layout in .workmux.yaml:

sidebar:
  position: left # "left" (default) or "top"
  width: 40 # left width in columns, or "15%" for percentage
  layout: tiles # left only: "compact" or "tiles" (default)

The left sidebar defaults to 10% of terminal width, clamped between 25 and 50 columns. Widths above 80 columns use the default width so tmux pane expansion recovers automatically.

Use workmux sidebar on --position top or --position left to override the configured placement when enabling the sidebar. The on action also accepts --width and --height. The off action rejects appearance flags because they have no effect while stopping the sidebar.

Example tmux binding

bind C-t run-shell "workmux sidebar"

Then press prefix + Ctrl-t to toggle the sidebar.

Note: The sidebar is currently tmux-only. When enabled, a sidebar pane is created in every existing window, and new windows automatically get one via a tmux hook.

workmux reap-agents

Shows tracked agent processes whose last state update is older than a threshold. By default this is a dry run, though it still reconciles workmux state while checking live panes.

workmux reap-agents
workmux reap-agents --hours 48
workmux reap-agents --hours 24 --force

Use --force to interrupt matching agents and remove their workmux agent state after they exit.

workmux sandbox

Commands for managing sandbox functionality. See the sandbox guide for full documentation.

workmux claude prune

Removes stale entries from Claude config (~/.claude.json) that point to deleted worktree directories. When you run Claude Code in worktrees, it stores per-worktree settings in that file. Over time, as worktrees are merged or deleted, it can accumulate entries for paths that no longer exist.

What happens

1. Scans ~/.claude.json for entries pointing to non-existent directories
2. Creates a backup at ~/.claude.json.bak before making changes
3. Removes all stale entries
4. Reports the number of entries cleaned up

Safety

• Only removes entries for absolute paths that don't exist
• Creates a backup before modifying the file
• Preserves all valid entries and relative paths

Examples

# Clean up stale Claude Code entries
workmux claude prune

Example output

  - Removing: /Users/user/project__worktrees/old-feature

✓ Created backup at ~/.claude.json.bak
✓ Removed 3 stale entries from ~/.claude.json

workmux completions <shell>

Generates shell completion script for the specified shell. Completions provide tab-completion for commands and dynamic branch name suggestions.

• <shell>: Shell type: bash, zsh, or fish.

Examples

# Generate completions for zsh
workmux completions zsh

See the Shell Completions section for installation instructions.

workmux docs

Displays this README with terminal formatting. Useful for quick reference without leaving the terminal.

When run interactively, renders markdown with colors and uses a pager (less). When piped (e.g., to an LLM), outputs raw markdown for clean context.

Using with AI agents

You can ask an agent to read the docs and configure workmux for you:

> run `workmux docs` and configure workmux so that on the left pane
  there is claude as agent, and on the right side neovim and empty
  shell on top of each other

⏺ Bash(workmux docs)
  ⎿  <p align="center">
       <picture>
     … +923 lines

⏺ Write(.workmux.yaml)
  ⎿  Wrote 9 lines to .workmux.yaml

⏺ Created .workmux.yaml with the layout:
  - Left: claude agent (focused)
  - Right top: neovim
  - Right bottom: empty shell

Agent status tracking

Workmux can display the status of the agent in your tmux window list, giving you at-a-glance visibility into what the agent in each window doing.

Key

• 🤖 = agent is working
• 💬 = agent is waiting for user input
• ✅ = agent finished (auto-clears on window focus)

Notes:

• Copilot CLI: No 💬 waiting state
• Pi: No 💬 waiting state
• Antigravity CLI (agy): No 💬 waiting state
• Kiro: Hooks support is messy: requires a custom agent since the default can't be edited

Setup

Run workmux setup to automatically detect Claude Code, Antigravity CLI, Copilot CLI, OpenCode, Pi, Oh My Pi, Grok, and other supported agent CLIs, install status tracking hooks, and install skills:

workmux setup

You can also run specific parts: workmux setup --hooks or workmux setup --skills. For Claude Code, CLAUDE_CONFIG_DIR is respected for both hook and skill installation.

Workmux will also prompt you on first run if it detects an agent without status tracking or skills configured.

Workmux automatically modifies your tmux window-status-format to display the status icons. This happens once per session and only affects the current tmux session (not your global config).

Manual setup

If you prefer manual setup:

Claude Code: install the workmux status plugin:

claude plugin marketplace add raine/workmux
claude plugin install workmux-status

Or manually add the hooks to ~/.claude/settings.json. See .claude-plugin/plugin.json for the hook configuration.

Copilot CLI: with Copilot CLI 0.0.422 or later, install the personal hook:

mkdir -p ~/.copilot/hooks
curl -o ~/.copilot/hooks/workmux-status.json \
  https://raw.githubusercontent.com/raine/workmux/main/resources/copilot/hooks/workmux-status/hooks.json

Copilot loads personal hooks in every repository. If the repository contains a .github/hooks/workmux-status installation, remove that directory to avoid running both copies of the hook. The waiting state is not supported due to limitations in the Copilot CLI hooks implementation.

Antigravity CLI (agy): workmux setup installs lifecycle hooks in ~/.gemini/config/hooks.json. PreInvocation marks the pane working, and the terminal Stop event marks it done.

OpenCode: download the workmux status plugin:

mkdir -p ~/.config/opencode/plugins
curl -o ~/.config/opencode/package.json \
  https://raw.githubusercontent.com/raine/workmux/main/resources/opencode/package.json
curl -o ~/.config/opencode/plugins/workmux-status.ts \
  https://raw.githubusercontent.com/raine/workmux/main/resources/opencode/plugins/workmux-status.ts

Restart OpenCode for the plugin to take effect.

Oh My Pi: copy the workmux status extension to your global OMP extensions directory:

mkdir -p ~/.omp/agent/extensions
curl -o ~/.omp/agent/extensions/workmux-status.ts \
  https://raw.githubusercontent.com/raine/workmux/main/resources/omp/extensions/workmux-status.ts

Restart omp for the extension to take effect.

Customization

You can customize the icons in your config:

# ~/.config/workmux/config.yaml
status_icons:
  working: '🔄'
  waiting: '⏸️'
  done: '✔️'

If you prefer to manage the tmux format yourself, disable auto-modification and add the status variable to your ~/.tmux.conf:

# ~/.config/workmux/config.yaml
status_format: false

# ~/.tmux.conf
set -g window-status-format '#I:#W#{?@workmux_status, #{@workmux_status},}#{?window_flags,#{window_flags}, }'
set -g window-status-current-format '#I:#W#{?@workmux_status, #{@workmux_status},}#{?window_flags,#{window_flags}, }'

Jump to completed or waiting agents

Use workmux last-done to quickly switch to the agent that most recently finished its task or is waiting for user input. Repeated invocations cycle through all completed and waiting agents in reverse chronological order.

Add a tmux keybinding for quick access:

# ~/.tmux.conf
bind-key L run-shell "workmux last-done"

Then press prefix + L to jump to the last completed or waiting agent, press again to cycle to the next oldest, and so on.

Toggle between agents

Use workmux last-agent to toggle between your current agent and the last one you visited. This works like vim's Ctrl+^ or tmux's last-window - it remembers which agent you came from and switches back to it. Pressing it again returns you to where you were.

This is available both as a CLI command and as the Tab key in the dashboard.

Add a tmux keybinding for quick access:

# ~/.tmux.conf
bind Tab run-shell "workmux last-agent"

Then press prefix + Tab to toggle between your two most recent agents.

Sandbox

workmux can run agents inside containers (Docker/Podman/Apple Container) or Lima VMs, isolating them from your host. Agents are restricted to the project worktree; sensitive files like SSH keys, AWS credentials, and other secrets are not accessible. This lets you run agents with --dangerously-skip-permissions without worrying about what they might touch on your host.

Sandboxing is transparent: status indicators, the dashboard, spawning new agents, and merging all continue to work normally across the sandbox boundary.

Backends

Container is a good default: simple to set up and ephemeral, so no state accumulates between sessions. Choose Lima if you want persistent VMs with built-in Nix/Devbox toolchain support.

Quick start

# ~/.config/workmux/config.yaml or .workmux.yaml
sandbox:
  enabled: true
  # backend: lima  # uncomment for Lima VMs (default: container)

The pre-built container image is pulled automatically on first run. For Lima, the VM is created and provisioned on first use.

Shared features

Both backends support:

• Host command proxying: Run specific commands (build tools, linters) on the host from inside the sandbox via host_commands config
• Extra mounts: Mount additional host directories into the sandbox (read-only by default)
• Git identity: Your user.name and user.email are automatically injected so git commits work without exposing your full ~/.gitconfig
• Credential sharing: Agent credentials are shared between host and sandbox
• Network restrictions (container only): Block outbound connections except to approved domains

See the sandbox guide for full setup, configuration, and security details.

Session mode

By default, workmux creates tmux windows within your current session. With session mode, each worktree gets its own tmux session instead. This allows each worktree to have multiple windows.

Enabling session mode

Add to your config:

# ~/.config/workmux/config.yaml or .workmux.yaml
mode: session

Or use the --session flag:

workmux add feature-branch --session

How it works

• Persistence: The mode is stored per-worktree. If you create a worktree with --session, subsequent open/close/remove commands automatically use session mode for that worktree.
• Navigation: After merge or remove, workmux switches you back to the previous session.

Multiple windows per session

Use the windows config to launch multiple windows in each session. Each window can have its own pane layout. This is mutually exclusive with the top-level panes config.

mode: session
windows:
  - name: editor
    panes:
      - command: <agent>
        focus: true
      - split: horizontal
        size: 20
  - name: tests
    panes:
      - command: just test --watch
  - panes:
      - command: tail -f app.log

Each window supports:

focus: true works across windows: the last pane with focus set determines which window is selected when the session opens.

Limitations

• tmux only: Session mode is currently only supported for the tmux backend.
• No duplicates: Unlike window mode which supports opening multiple windows for the same worktree (-2, -3 suffixes), session mode creates one session per worktree.

Workflow example

Here's a complete workflow:

# Start a new feature
workmux add user-auth

# Work on your feature...
# (tmux automatically sets up your configured panes and environment)

# When ready, merge and clean up
workmux merge user-auth

# Start another feature
workmux add api-endpoint

# List all active worktrees
workmux list

Before and after

workmux turns a multi-step manual workflow into simple commands, making parallel development workflows practical.

Without workmux

# 1. Manually create the worktree and environment
git worktree add ../worktrees/user-auth -b user-auth
cd ../worktrees/user-auth
cp ../../project/.env.example .env
ln -s ../../project/node_modules .
npm install
# ... and other setup steps

# 2. Manually create and configure the tmux window
tmux new-window -n user-auth
tmux split-window -h 'npm run dev'
tmux send-keys -t 0 'claude' C-m
# ... repeat for every pane in your desired layout

# 3. When done, manually merge and clean everything up
cd ../../project
git switch main && git pull
git merge --no-ff user-auth
tmux kill-window -t user-auth
git worktree remove ../worktrees/user-auth
git branch -d user-auth

With workmux

# Create the environment
workmux add user-auth

# ... work on the feature ...

# Merge and clean up
workmux merge

The parallel AI workflow

Run multiple AI agents simultaneously, each in its own worktree.

# Spin up two agents working on different tasks
workmux add refactor-user-model -p "Refactor the User model to use composition"
workmux add add-search-endpoint -p "Add a /search endpoint with pagination"

# Each agent works in isolation. Check progress via tmux windows or the dashboard
workmux dashboard

# Merge completed work back to main
workmux merge refactor-user-model
workmux merge add-search-endpoint

[!TIP] Use -A (--auto-name) to generate branch names automatically from your prompt, so you don't have to think of one. See Automatic branch name generation.

Why git worktrees?

Git worktrees let you have multiple branches checked out at once in the same repository, each in a separate directory. This provides two main advantages over a standard single-directory setup:

• Painless context switching: Switch between tasks just by changing directories (cd ../other-branch). There's no need to git stash or make temporary commits. Your work-in-progress, editor state, and command history remain isolated and intact for each branch.

• True parallel development: Work on multiple branches simultaneously without interference. You can run builds, install dependencies (npm install), or run tests in one worktree while actively coding in another. This isolation is perfect for running multiple AI agents in parallel on different tasks.

In a standard Git setup, switching branches disrupts your flow by requiring a clean working tree. Worktrees remove this friction. workmux automates the entire process and pairs each worktree with a dedicated tmux window, creating fully isolated development environments. See Before and after for how workmux streamlines this workflow.

Git worktree caveats

While powerful, git worktrees have nuances that are important to understand. workmux is designed to automate solutions to these, but awareness of the underlying mechanics helps.

• Gitignored files require configuration
• Conflicts
• Package manager considerations (pnpm, yarn)
• Rust projects
• Port conflicts in monorepos
• Symlinks and .gitignore trailing slashes

Gitignored files require configuration

When git worktree add creates a new working directory, it's a clean checkout. Files listed in your .gitignore (e.g., .env files, node_modules, IDE configuration) will not exist in the new worktree by default. Your application will be broken in the new worktree until you manually create or link these necessary files.

This is a primary feature of workmux. Use the files section in your .workmux.yaml to automatically copy or symlink these files on creation:

# .workmux.yaml
files:
  copy:
    - .env # Copy environment variables
  symlink:
    - .next/cache # Share Next.js build cache

Note: Symlinking node_modules can be efficient but only works if all worktrees share identical dependencies. If different branches have different dependency versions, each worktree needs its own installation. For dependency installation, consider using a pane command instead of post_create hooks - this runs the install in the background without blocking the worktree and window creation:

panes:
  - command: npm install
    focus: true
  - split: horizontal

Conflicts

Worktrees isolate your filesystem, but they do not prevent merge conflicts. If you modify the area of code on two different branches (in two different worktrees), you will still have a conflict when you merge one into the other.

The best practice is to work on logically separate features in parallel worktrees. When conflicts are unavoidable, use standard git tools to resolve them. You can also leverage an AI agent within the worktree to assist with the conflict resolution.

Package manager considerations (pnpm, yarn)

Modern package managers like pnpm use a global store with symlinks to node_modules. Each worktree typically needs its own pnpm install to set up the correct dependency versions for that branch.

If your worktrees always have identical dependencies (e.g., working on multiple features from the same base), you could potentially symlink node_modules between worktrees. However, this breaks as soon as branches diverge in their dependencies, so it's generally safer to run a fresh install in each worktree.

Note: In large monorepos, cleaning up node_modules during worktree removal can take significant time. workmux has a special cleanup mechanism that moves node_modules to a temporary location and deletes it in the background, making the remove command return almost instantly.

Rust projects

Unlike node_modules, Rust's target/ directory should not be symlinked between worktrees. Cargo locks the target directory during builds, so sharing it would block parallel builds and defeat the purpose of worktrees.

Instead, use sccache to share compiled dependencies across worktrees:

brew install sccache

Add to ~/.cargo/config.toml:

[build]
rustc-wrapper = "sccache"

This caches compiled dependencies globally, so new worktrees benefit from cached artifacts without any lock contention.

Port conflicts in monorepos

When running multiple services (API, web app, database) in a monorepo, each worktree needs unique ports to avoid conflicts. For example, if your .env has hardcoded ports like API_PORT=3001 and VITE_PORT=3000, running two worktrees simultaneously would fail because both would try to bind to the same ports. Simply copying .env files won't work since all worktrees would use the same ports.

Solution: Use a post_create hook to generate a .env.local file with unique ports. Many frameworks (Vite, Next.js, CRA) automatically load .env.local and merge it with .env, with .env.local taking precedence. For plain Node.js, use multiple --env-file flags where later files override earlier ones.

Create a script at scripts/worktree-env:

#!/usr/bin/env bash
set -euo pipefail

port_in_use() {
  lsof -nP -iTCP:"$1" -sTCP:LISTEN &>/dev/null
}

find_port() {
  local port=$1
  while port_in_use "$port"; do
    ((port++))
  done
  echo "$port"
}

# Hash the handle to get a deterministic port offset (0-99)
hash=$(echo -n "$WM_HANDLE" | md5 | cut -c1-4)
offset=$((16#$hash % 100))

# Find available ports starting from the hash-based offset
api_port=$(find_port $((3001 + offset * 10)))
vite_port=$(find_port $((3000 + offset * 10)))

# Generate .env.local with port overrides
cat >.env.local <<EOF
API_PORT=$api_port
VITE_PORT=$vite_port
VITE_PUBLIC_API_URL=http://localhost:$api_port
EOF

echo "Created .env.local with ports: API=$api_port, VITE=$vite_port"

Configure workmux to copy .env and generate .env.local:

# .workmux.yaml
files:
  copy:
    - .env # Copy secrets (DATABASE_URL, API keys, etc.)

post_create:
  - ./scripts/worktree-env # Generate .env.local with unique ports

For plain Node.js (without framework support), load both files with later overriding earlier:

{
  "scripts": {
    "api": "node --env-file=.env --env-file=.env.local api/server.js",
    "web": "node --env-file=.env --env-file=.env.local web/server.js"
  }
}

Each worktree now gets unique ports derived from its name, allowing multiple instances to run simultaneously without conflicts. The .env file stays untouched, and .env.local is gitignored.

See the Monorepos guide for alternative approaches using direnv.

Symlinks and .gitignore trailing slashes

If your .gitignore uses a trailing slash to ignore directories (e.g., tests/venv/), symlinks to that path in the created worktree will not be ignored and will show up in git status. This is because venv/ only matches directories, not files (symlinks).

To ignore both directories and symlinks, remove the trailing slash:

- tests/venv/
+ tests/venv

Tips

Nerdfont icons

On first run, workmux prompts you to check if a git branch icon displays correctly. If you have a Nerd Font installed, answer yes to enable nerdfont icons throughout the interface, including the tmux window prefix.

To change the setting later, edit ~/.config/workmux/config.yaml:

nerdfont: true # or false for unicode fallbacks

Using direnv

If your project uses direnv for environment management, you can configure workmux to automatically set it up in new worktrees:

# .workmux.yaml
post_create:
  - direnv allow

files:
  symlink:
    - .envrc

Claude Code permissions

By default, Claude Code prompts for permission before running commands. There are several ways to handle this in worktrees:

Share permissions across worktrees

To keep permission prompts but share granted permissions across worktrees:

files:
  symlink:
    - .claude/settings.local.json

Add this to your global config (~/.config/workmux/config.yaml) or project's .workmux.yaml. Since this file contains user-specific permissions, also add it to .gitignore:

.claude/settings.local.json

Named agent profiles

Define named agents in your global config when an agent needs a wrapper command, extra arguments, or environment variables. Simple string aliases still work:

# ~/.config/workmux/config.yaml
agents:
  cc-work: "claude"
  cc-personal: "env CLAUDE_CONFIG_DIR=~/.claude-personal claude"
  cc-bedrock: "env -u CLAUDE_CODE_USE_BEDROCK -u AWS_REGION AWS_PROFILE=prod claude"
  cc-yolo: "claude --dangerously-skip-permissions"
  cod: "codex --yolo"

Structured profiles make the same kind of config easier to maintain because arguments and environment are not written as one long shell string:

# ~/.config/workmux/config.yaml
agents:
  cc-personal:
    type: claude
    command: claude
    env:
      CLAUDE_CONFIG_DIR: ~/.claude-personal
      ANTHROPIC_AUTH_TOKEN:
        from_env: ANTHROPIC_AUTH_TOKEN
  cod-mini:
    type: codex
    command: codex
    args:
      - exec
      - -m
      - gpt-5.1-codex-mini

To skip prompts entirely, define a named agent with the Claude skip-permissions flag:

# ~/.config/workmux/config.yaml
agents:
  cc-yolo:
    type: claude
    command: claude
    args:
      - --dangerously-skip-permissions

Reference a named profile per project with agent: cc-yolo, pass it with -a cc-yolo, or use it directly in a pane with <agent:cc-yolo>. Structured profiles support command, args, env, and type fields.

Delegating tasks with /worktree

The /worktree skill lets you delegate tasks to parallel worktree agents directly from your conversation. A main agent on the main branch can act as a coordinator: planning work and spinning up worktree agents for each task.

📝 See this blog post for a detailed walkthrough of the workflow.

Usage

> /worktree Implement user authentication
> /worktree Fix the race condition in handler.go
> /worktree Add dark mode, Implement caching  # multiple tasks

See the Skills guide for more skills including /merge, /rebase, /coordinator, and /open-pr.

Shell completions

To enable tab completions for commands and branch names, add the following to your shell's configuration file.

For bash, add to your .bashrc:

eval "$(workmux completions bash)"

For zsh, add to your .zshrc:

eval "$(workmux completions zsh)"

For fish, add to your config.fish:

workmux completions fish | source

Requirements

• Rust (for building)
• Git 2.5+ (for worktree support)
• tmux (or an alternative backend)

Alternative backends

While tmux is the primary and recommended backend, workmux also supports alternative terminal multiplexers:

• WezTerm (experimental) - For users who prefer WezTerm's features. Thanks to @JeremyBYU for contributing this backend.
• kitty (experimental) - For users who prefer kitty terminal. Requires allow_remote_control and listen_on configuration.
• Zellij (experimental) - For users who prefer Zellij. Detected automatically via $ZELLIJ.

workmux auto-detects the backend from environment variables ($TMUX, $WEZTERM_PANE, $KITTY_WINDOW_ID, or $ZELLIJ). Session-specific variables are checked first, so running tmux inside kitty correctly selects the tmux backend. Set $WORKMUX_BACKEND to override detection.

Inspiration and related tools

workmux is inspired by wtp, an excellent git worktree management tool. While wtp streamlines worktree creation and setup, workmux takes this further by tightly coupling worktrees with tmux window management.

For managing multiple AI agents in parallel, tools like claude-squad and vibe-kanban offer dedicated interfaces, like a TUI or kanban board. In contrast, workmux adheres to its philosophy that tmux is the interface, providing a native tmux experience for managing parallel workflows without requiring a separate interface to learn.

Contributing

Bug reports and feature suggestions are always welcome via issues or discussions. Large and/or complex PRs, especially without prior discussion, may not get merged. Thanks for contributing!

See CONTRIBUTING.md for development setup.

Related projects

• tmux-tools — Collection of tmux utilities including file picker, smart sessions, and more
• tmux-file-picker — Pop up fzf in tmux to quickly insert file paths, perfect for AI coding assistants
• tmux-bro — Smart tmux session manager that sets up project-specific sessions automatically
• git-surgeon — Non-interactive hunk-level git staging for AI agents
• claude-history — Search and view Claude Code conversation history with fzf
• consult-llm — Consult other AI models from your agent workflow
• tmux-agent-usage — Display AI agent rate limit usage in your tmux status bar