hivemind: Skill for Claude Code

.claude/skills/tmux/SKILL.md

tmux is a skill for Claude Code from cohen-liel/hivemind. It costs 22 tokens per session (964 once invoked), scanned A, a copy of tmux, Apache-2.0.

A tool for controlling tmux, a terminal program that keeps command-line sessions running in separate panes and windows. It can read terminal output and send keystrokes to interactive programs.

In plain words
What is it for?
Use it to watch coding-agent sessions, inspect terminal output, navigate panes, or interact with programs running in tmux.
Why use it?
It lets you monitor or operate long-running command-line sessions without needing to keep the terminal window focused.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions Claude Code; mentions Codex; built for openclaw.

This is cohen-liel/hivemind's own configuration. It tells Claude Code how to work on hivemind itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything hivemind configures →

Reuse

Borrowing it

Nothing to install: this file belongs to cohen-liel/hivemind. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/cohen-liel/hivemind/main/.claude/skills/tmux/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/cohen-liel/hivemind

Made for: Claude Code.

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.

agentmods badge for tmux

README.md
[![agentmods](https://agentmods.dev/badge/skills/cohen-liel/hivemind/tmux/github.svg)](https://agentmods.dev/skills/cohen-liel/hivemind/tmux)
Your own site
<a href="https://agentmods.dev/skills/cohen-liel/hivemind/tmux"><img src="https://agentmods.dev/badge/skills/cohen-liel/hivemind/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.

agentmods 80×15 button for tmux

Your own site · 80×15
<a href="https://agentmods.dev/skills/cohen-liel/hivemind/tmux"><img src="https://agentmods.dev/badge/skills/cohen-liel/hivemind/tmux.svg" alt="Reviewed on agentmods" width="80" 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 964 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 89% 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00022 $0.00964
Opus 5 $0.00011 $0.00482
Sonnet 5 $0.00004 $0.00193
Haiku 4.5 $0.00002 $0.00096

Measured 5d ago against content hash 25f7d9ee5507, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, 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 5d 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.

Origin

This is a copy

89% identical to tmux — 19 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.

.claude/skills/tmux/SKILL.md · 154 lines

How it starts

The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.

tmux Session Control

Control tmux sessions by sending keystrokes and reading output. Essential for managing Claude Code sessions.

When to Use

USE this skill when:

  • Monitoring Claude/Codex sessions in tmux
  • Sending input to interactive terminal applications
  • Scraping output from long-running processes in tmux
  • Navigating tmux panes/windows programmatically
  • Checking on background work in existing sessions

When NOT to Use

DON'T use this skill when:

  • Running one-off shell commands → use exec tool directly
  • Starting new background processes → use exec with background:true
  • Non-interactive scripts → use exec tool
  • The process isn't in tmux
  • You need to create a new tmux session → use exec with tmux new-session

Example Sessions

Session Purpose
shared Primary interactive session
worker-2 - worker-8 Parallel worker sessions

Common Commands

List Sessions

tmux list-sessions
tmux ls

Capture Output

# Last 20 lines of pane
tmux capture-pane -t shared -p | tail -20

# Entire scrollback
tmux capture-pane -t shared -p -S -

# Specific pane in window
tmux capture-pane -t shared:0.0 -p

Send Keys

# Send text (doesn't press Enter)
tmux send-keys -t shared "hello"

# Send text + Enter
tmux send-keys -t shared "y" Enter

# Send special keys
tmux send-keys -t shared Enter
tmux send-keys -t shared Escape
tmux send-keys -t shared C-c          # Ctrl+C
tmux send-keys -t shared C-d          # Ctrl+D (EOF)
tmux send-keys -t shared C-z          # Ctrl+Z (suspend)

Window/Pane Navigation

# Select window
tmux select-window -t shared:0

# Select pane
tmux select-pane -t shared:0.1

# List windows
tmux list-windows -t shared

Session Management

# Create new session
tmux new-session -d -s newsession

# Kill session
tmux kill-session -t sessionname

# Rename session
tmux rename-session -t old new

Read the full file on GitHub · 154 lines

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.

  1. 5d ago First seen · 154 lines · 22 tokens per session scan A 25f7d9ee5507

Subscribe to this mod's changes

tmux is a skill published in the GitHub repository cohen-liel/hivemind (108 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 22 tokens to every session and 964 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to tmux, differing in 19 lines, and is treated as a copy.

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