tmux-aware

tmux-aware is a skill for Claude Code from sjungling/sjungling-claude-plugins. It costs 73 tokens per session (1,493 once invoked), scanned A, original, MIT.

A workflow for managing long-running services in tmux, a terminal tool that keeps programs running in named windows and panes.

In plain words
What is it for?
Use it to start services, find or create named tmux panes, capture their output, and manage background processes during development.
Why use it?
It keeps server output out of the current terminal and helps verify that commands sent to background panes worked.

Skill for Claude Code

Written for Claude Code: SessionStart hook event.

Part of the tmux-tools plugin — 1 skill shipped together

Good fit Use it to start services, find or create named tmux panes, capture their output, and manage background processes during development.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sjungling/sjungling-claude-plugins/tmux-aware
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.

Any agent
npx skills add sjungling/sjungling-claude-plugins --skill tmux-aware
Clone the repo
git clone --depth 1 https://github.com/sjungling/sjungling-claude-plugins

Made for: Claude Code.

Or install tmux-tools, the plugin that ships this one along with the rest of its 1 skill.

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-aware

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/sjungling/sjungling-claude-plugins/tmux-aware"><img src="https://agentmods.dev/badge/skills/sjungling/sjungling-claude-plugins/tmux-aware.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,493 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 original No closer match found 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 $0.00073 $0.01493
Opus 5 $0.00036 $0.00746
Sonnet 5 $0.00015 $0.00299
Haiku 4.5 $0.00007 $0.00149

Measured 12d ago against content hash 88dd098debaf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

tmux-aware 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 12d 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.

plugins/tmux-tools/skills/tmux-aware/SKILL.md · 185 lines

How it starts

The opening of the file, as written. The whole thing — 185 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TMUX-Aware Process Management

Overview

When running inside a TMUX session, manage services in dedicated panes without cluttering the current view. All Claude-created panes go in a dedicated "claude-controlled" window.

For the visual workflow diagram, see ./references/workflow.mmd.

Key Principles

  1. Never clutter the current window - Always create panes in the "claude-controlled" window
  2. Find panes by name - Search for existing panes/windows by title, not by process
  3. Verify commands worked - Capture output after sending commands to detect errors
  4. Ask when uncertain - If a pane can't be found by name, list options and ask the user

Starting a Service

When the user asks to start a service (e.g., "start the API server"):

Step 1: Check for claude-controlled window

# List windows, look for claude-controlled
tmux list-windows -F '#{window_index}:#{window_name}' | grep ':claude-controlled$'

Step 2: Create window if needed

# Create the claude-controlled window
tmux new-window -n "claude-controlled"

Step 3: Create a named pane for the service

# If claude-controlled window already has panes, split it
tmux split-window -t claude-controlled -v

# Name the pane after the service
tmux select-pane -t claude-controlled -T "api-server"

Step 4: Send the start command

tmux send-keys -t "claude-controlled:0.api-server" "npm run dev" Enter

Step 5: Verify it started (capture output after brief delay)

sleep 2
tmux capture-pane -t "claude-controlled:0.api-server" -p -S -20

Check the output for errors. Report success or detected issues.

Naming Convention

  • Window: claude-controlled (all Claude-created panes go here)
  • Pane titles: Lowercase, hyphenated, match the service (e.g., api-server, redis, vite-dev, postgres)

Finding Existing Panes

When the user asks to interact with a process (e.g., "check the redis logs"):

Step 1: List panes with names

Read the full file on GitHub · 185 lines

Files

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.

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. 12d ago First seen · 185 lines · 73 tokens per session scan A 88dd098debaf

Subscribe to this mod's changes

tmux-aware is a skill published in the GitHub repository sjungling/sjungling-claude-plugins (13 stars, last pushed 29d ago), licensed MIT. It adds 73 tokens to every session and 1,493 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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