Remote-control tmux sessions for interactive CLIs by sending keystrokes and scraping pane output.
View on GitHubFebruary 3, 2026
Select agents to install to:
npx add-skill https://github.com/openclaw/openclaw/blob/fc40ba8e7eb1345afdb1c8d274219cd702b73354/skills/tmux/SKILL.md -a claude-code --skill tmuxInstallation paths:
.claude/skills/tmux/# tmux Skill (OpenClaw)
Use tmux only when you need an interactive TTY. Prefer exec background mode for long-running, non-interactive tasks.
## Quickstart (isolated socket, exec tool)
```bash
SOCKET_DIR="${OPENCLAW_TMUX_SOCKET_DIR:-${CLAWDBOT_TMUX_SOCKET_DIR:-${TMPDIR:-/tmp}/openclaw-tmux-sockets}}"
mkdir -p "$SOCKET_DIR"
SOCKET="$SOCKET_DIR/openclaw.sock"
SESSION=openclaw-python
tmux -S "$SOCKET" new -d -s "$SESSION" -n shell
tmux -S "$SOCKET" send-keys -t "$SESSION":0.0 -- 'PYTHON_BASIC_REPL=1 python3 -q' Enter
tmux -S "$SOCKET" capture-pane -p -J -t "$SESSION":0.0 -S -200
```
After starting a session, always print monitor commands:
```
To monitor:
tmux -S "$SOCKET" attach -t "$SESSION"
tmux -S "$SOCKET" capture-pane -p -J -t "$SESSION":0.0 -S -200
```
## Socket convention
- Use `OPENCLAW_TMUX_SOCKET_DIR` (legacy `CLAWDBOT_TMUX_SOCKET_DIR` also supported).
- Default socket path: `"$OPENCLAW_TMUX_SOCKET_DIR/openclaw.sock"`.
## Targeting panes and naming
- Target format: `session:window.pane` (defaults to `:0.0`).
- Keep names short; avoid spaces.
- Inspect: `tmux -S "$SOCKET" list-sessions`, `tmux -S "$SOCKET" list-panes -a`.
## Finding sessions
- List sessions on your socket: `{baseDir}/scripts/find-sessions.sh -S "$SOCKET"`.
- Scan all sockets: `{baseDir}/scripts/find-sessions.sh --all` (uses `OPENCLAW_TMUX_SOCKET_DIR`).
## Sending input safely
- Prefer literal sends: `tmux -S "$SOCKET" send-keys -t target -l -- "$cmd"`.
- Control keys: `tmux -S "$SOCKET" send-keys -t target C-c`.
## Watching output
- Capture recent history: `tmux -S "$SOCKET" capture-pane -p -J -t target -S -200`.
- Wait for prompts: `{baseDir}/scripts/wait-for-text.sh -t session:0.0 -p 'pattern'`.
- Attaching is OK; detach with `Ctrl+b d`.
## Spawning processes
- For python REPLs, set `PYTHON_BASIC_REPL=1` (non-basic REPL breaks send-keys flows).
## Windows / WSL
- tmux is supported on macOS/Linux. On Windows, use WSL and install tmux inside WSL.
- This skill is gated to