A control method for tmux, a terminal tool that keeps command-line sessions running and lets you interact with them remotely.

Use it to create and monitor terminal sessions, send keystrokes to interactive programs, and capture output from terminal panes.

It allows an agent to operate interactive command-line programs and inspect their output after starting them.

tmux — Skill for Claude Code and Codex by CraftOS-dev: A control method for tmux, a terminal tool that…

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add skills/craftos-dev/craftbot/tmux

Any agent

npx skills add CraftOS-dev/CraftBot --skill tmux

Clone the repo

git clone --depth 1 https://github.com/CraftOS-dev/CraftBot

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/craftos-dev/craftbot/tmux.svg)](https://agentmods.dev/skills/craftos-dev/craftbot/tmux)

Your own site

<a href="https://agentmods.dev/skills/craftos-dev/craftbot/tmux"><img src="https://agentmods.dev/badge/skills/craftos-dev/craftbot/tmux.svg" alt="Measured on agentmods" height="20"></a>

Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,307 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin 80% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00022	$0.01307
Opus 5	$0.00011	$0.00654
Sonnet 5	$0.00004	$0.00261
Haiku 4.5	$0.00002	$0.00131

Measured 2d ago against content hash 9801a7dde410, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

tmux scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/find-sessions.sh, scripts/wait-for-text.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

80% identical to tmux — 20 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/tmux/SKILL.md · 122 lines

How it starts

The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.

tmux Skill (Clawdbot)

Use tmux only when you need an interactive TTY. Prefer bash background mode for long-running, non-interactive tasks.

Quickstart (isolated socket, bash tool)

SOCKET_DIR="${CLAWDBOT_TMUX_SOCKET_DIR:-${TMPDIR:-/tmp}/clawdbot-tmux-sockets}"
mkdir -p "$SOCKET_DIR"
SOCKET="$SOCKET_DIR/clawdbot.sock"
SESSION=clawdbot-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 CLAWDBOT_TMUX_SOCKET_DIR (default ${TMPDIR:-/tmp}/clawdbot-tmux-sockets).
Default socket path: "$CLAWDBOT_TMUX_SOCKET_DIR/clawdbot.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 CLAWDBOT_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 darwin/linux and requires tmux on PATH.

Read the full file on GitHub · 122 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2d ago First seen · 122 lines · 22 tokens per session scan A 9801a7dde410

Subscribe to this mod's changes

tmux is a skill published in the GitHub repository CraftOS-dev/CraftBot (380 stars, last pushed 3d ago), licensed MIT. It adds 22 tokens to every session and 1,307 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 80% identical to tmux, differing in 20 lines, and is treated as a copy.

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