Tmux Init

tmux-init

Set up a notification system for Claude Code that sends native macOS notifications when sessions need attention, with click-to-navigate support for tmux panes.

Usage

/tmux-init              # Install notification system
/tmux-init --status     # Check installation status
/tmux-init --uninstall  # Remove notification system

What Gets Installed

1. Configuration in ~/bin/:

   • hooks.json - Webhook routing configuration

2. Webhook service (LaunchAgent):

   • Listens on port 9000 for notification requests
   • Auto-starts on login

3. Shell environment (added to ~/.zshrc):

   • WS_TMUX_LOCATION - Current tmux session:window.pane
   • WS_TMUX_SESSION_NAME - Current session name
   • WS_TMUX_WINDOW_NAME - Current window name

4. Claude hooks (added to ~/.claude/settings.json):

   • Stop hook - Calls forge notify hook when Claude finishes
   • Notification hook - Calls forge notify hook when Claude needs input

5. Python CLI commands:

   • forge notify hook - Sends notifications (called by Claude hooks)
   • forge tmux go - Navigates to tmux location (called by webhook on click)

Prerequisites

• macOS
• tmux
• Homebrew (for installing dependencies)

Execution Instructions

Parse Arguments

UNINSTALL=false
STATUS=false

for arg in "$@"; do
    case "$arg" in
        --uninstall) UNINSTALL=true ;;
        --status) STATUS=true ;;
    esac
done

If --status: Check Installation Status

echo "=== Claude tmux Notification System Status ==="
echo ""

# Check dependencies
echo "Dependencies:"
command -v terminal-notifier &>/dev/null && echo "  ✅ terminal-notifier" || echo "  ❌ terminal-notifier (missing)"
command -v webhook &>/dev/null && echo "  ✅ webhook" || echo "  ❌ webhook (missing)"
command -v jq &>/dev/null && echo "  ✅ jq" || echo "  ❌ jq (missing)"
command -v tmux &>/dev/null && echo "  ✅ tmux" || echo "  ❌ tmux (missing)"
echo ""

# Check configuration and CLI commands
echo "Configuration:"
[ -f "$HOME/bin/hooks.json" ] && echo "  ✅ ~/bin/hooks.json" || echo "  ❌ ~/bin/hooks.json (missing)"
command -v forge &>/dev/null && echo "  ✅ forge CLI" || echo "  ❌ forge CLI (missing)"
forge notify hook --help &>/dev/null && echo "  ✅ forge notify hook" || echo "  ❌ forge notify hook (missing)"
forge tmux go --help &>/dev/null && echo "  ✅ forge tmux go" || echo "  ❌ forge tmux go (missing)"
echo ""

# Check LaunchAgent
echo "Webhook Service:"
PLIST="$HOME/Library/LaunchAgents/com.claude.webhook.plist"
if [ -f "$PLIST" ]; then
    if launchctl list | grep -q "com.claude.webhook"; then
        echo "  ✅ LaunchAgent installed and running"
    else
        echo "  ⚠️  LaunchAgent installed but not running"
    fi
else
    echo "  ❌ LaunchAgent not installed"
fi
echo ""

# Check webhook port
echo "Webhook Port:"
if curl -s http://localhost:9000/hooks/claude-notify -o /dev/null -w "%{http_code}" | grep -q "200\|405"; then
    echo "  ✅ Port 9000 responding"
else
    echo "  ❌ Port 9000 not responding"
fi
echo ""

# Check shell environment
echo "Shell Environment:"
if grep -q "WS_TMUX_LOCATION" "$HOME/.zshrc" 2>/dev/null; then
    echo "  ✅ tmux env vars in ~/.zshrc"
else
    echo "  ❌ tmux env vars not in ~/.zshrc"
fi
echo ""

# Check Claude hooks via webhook log
echo "Claude Hooks (check log for activity):"
LOG_FILE="$HOME/Library/Logs/claude-webhook/webhook.log"
if [ -f "$LOG_FILE" ]; then
    RECENT_LINES=$(tail -5 "$LOG_FILE" 2>/dev/null)
    if [ -n "$RECENT_LINES" ]; then
        echo "  Recent webhook log entries:"
        echo "$RECENT_LINES" | sed 's/^/    /'
    else
        echo "  ⚠️  Log file exists but is empty"
    fi
    echo ""
    echo "  To verify hooks are working, trigger a Claude stop event"
    echo "  and check: tail -f ~/Library/Logs/claude-webhook/webhook.log"
else
    echo "  ⚠️  No log file yet at ~/Library/Logs/claude-webhook/webhook.log"
    echo "  Log will be created when first notification is received"
fi

Exit after showing status.

If --uninstall: Remove Installation

echo "=== Uninstalling Claude tmux Notification System ==="
echo ""

# Stop and remove LaunchAgent
PLIST="$HOME/Library/LaunchAgents/com.claude.webhook.plist"
if [ -f "$PLIST" ]; then
    echo "Stopping webhook service..."
    launchctl unload "$PLIST" 2>/dev/null || true
    rm -f "$PLIST"
    echo "  ✅ LaunchAgent removed"
fi

# Remove configuration
echo "Removing configuration..."
rm -f "$HOME/bin/hooks.json"
echo "  ✅ Configuration removed"

# Note: Don't remove shell env or Claude hooks automatically
echo ""
echo "Manual cleanup (optional):"
echo "  - Remove WS_TMUX_* lines from ~/.zshrc"
echo "  - Remove Stop/Notification hooks from ~/.claude/settings.json"
echo ""
echo "✅ Uninstallation complete"

Exit after uninstalling.

Install: Full Setup

Run the automated installer:

forge webhook init

This command will:

1. Install dependencies (terminal-notifier, webhook, jq)
2. Create webhook configuration (~/bin/hooks.json)
3. Set up LaunchAgent for webhook service
4. Configure Claude Code hooks to call forge notify hook
5. Set up shell environment (tmux env vars)

After installation:

# Check status
forge webhook status

# Restart your shell
source ~/.zshrc

# Start a new tmux session and run Claude Code
# You'll receive notifications when Claude finishes or needs input

Troubleshooting

Notifications not appearing

1. Check if webhook is running:

   launchctl list | grep claude.webhook
   

2. Check webhook logs:

   tail -f ~/Library/Logs/claude-webhook/webhook.log
   

3. Test webhook manually:

   curl -X POST -H "Content-Type: application/json" \
     -d '{"tmux_location":"test:0.0","hook_event_name":"Stop"}' \
     http://localhost:9000/hooks/claude-notify
   

Click doesn't navigate to pane

1. Ensure tmux env vars are set:

   echo $WS_TMUX_LOCATION
   

2. Test navigation command:

   forge tmux go "session:0.0"
   

Webhook won't start

1. Check if port 9000 is in use:

   lsof -i :9000
   

2. Try restarting:

   launchctl unload ~/Library/LaunchAgents/com.claude.webhook.plist
   launchctl load ~/Library/LaunchAgents/com.claude.webhook.plist
   

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