elizaOS is an open-source TypeScript framework and product stack for building and running autonomous AI agents. Developers use its runtime, application, command-line tool, cloud services, native bridges, and plugins to create agent-based software. The catalogue entries provide skills, commands, instructions, and rules for working with this monorepo and its agent ecosystem.
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.
npx skills add elizaOS/eliza --skill tmuxgit clone --depth 1 https://github.com/elizaOS/elizaWrote 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.
[](https://agentmods.dev/skills/elizaos/eliza/tmux)<a href="https://agentmods.dev/skills/elizaos/eliza/tmux"><img src="https://agentmods.dev/badge/skills/elizaos/eliza/tmux/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/elizaos/eliza/tmux"><img src="https://agentmods.dev/badge/skills/elizaos/eliza/tmux.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00087 | $0.01571 |
| Opus 5 | $0.00044 | $0.00785 |
| Sonnet 5 | $0.00017 | $0.00314 |
| Haiku 4.5 | $0.00009 | $0.00157 |
Grade A, and why
tmux scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.
tmux Skill (Otto)
Use tmux only when you need an interactive TTY. Prefer exec background mode for long-running, non-interactive tasks.
Quickstart (isolated socket, exec tool)
SOCKET_DIR="${OTTO_TMUX_SOCKET_DIR:-${TMPDIR:-/tmp}/otto-tmux-sockets}"
mkdir -p "$SOCKET_DIR"
SOCKET="$SOCKET_DIR/otto.sock"
SESSION=otto-python
tmux -S "$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 "$SESSION":0.0 -S -200
Socket convention
- Use
OTTO_TMUX_SOCKET_DIR. - Default socket path:
"$OTTO_TMUX_SOCKET_DIR/otto.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 "$SOCKET". - Scan all sockets:
{baseDir}/scripts/find-sessions.sh --all(usesOTTO_TMUX_SOCKET_DIR).
Sending input safely
- Prefer literal sends:
tmux -S "$SOCKET" send-keys -t target -l -- "$cmd". - Control keys:
tmux -S "$SOCKET" send-keys -t target C-c. - For interactive TUI apps like Claude Code/Codex, this guidance covers how to send commands.
Do not append
Enterin the samesend-keys. These apps may treat a fast text+Enter sequence as paste/multi-line input and not submit; this is timing-dependent. Send text andEnteras separate commands with a small delay (tune per environment; increase if needed, or usesleep 1if sub-second sleeps aren't supported):
tmux -S "$SOCKET" send-keys -t target -l -- "$cmd" && sleep 0.1 && tmux -S "$SOCKET" send-keys -t target Enter
Watching output
- Capture recent history:
tmux -S "$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.
What ships with it
2 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.
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.
- 11d ago First seen · 136 lines · 87 tokens per session scan A 3477f23c8ce3
tmux is a skill published in the GitHub repository elizaOS/eliza (19,313 stars, last pushed today), licensed MIT. It adds 87 tokens to every session and 1,571 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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