A configuration skill for changing the status icons shown by the claude-tmux-status plugin in tmux, a terminal tool that keeps multiple shell sessions visible.

It lists available icon themes, shows the current settings, applies a named theme, and customizes the idle, processing, and attention icons.

It removes the need to edit configuration files by hand when changing status themes or individual indicators. Changes appear after the next Claude Code lifecycle event without restarting.

tmux-icons — Skill for Claude Code by haxybaxy

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code

/plugin marketplace add haxybaxy/claude-tmux-status

Claude Code

/plugin install tmux-status

Made for: Claude Code.

Or install tmux-status, the plugin that ships this one along with the rest of its 1 skill, 9 hooks.

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/haxybaxy/claude-tmux-status/tmux-icons/github.svg)](https://agentmods.dev/skills/haxybaxy/claude-tmux-status/tmux-icons)

Your own site

<a href="https://agentmods.dev/skills/haxybaxy/claude-tmux-status/tmux-icons"><img src="https://agentmods.dev/badge/skills/haxybaxy/claude-tmux-status/tmux-icons/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/haxybaxy/claude-tmux-status/tmux-icons"><img src="https://agentmods.dev/badge/skills/haxybaxy/claude-tmux-status/tmux-icons.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 586 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.

Model	Per session	Once invoked
Fable 5.1	$0.00054	$0.00586
Opus 5	$0.00027	$0.00293
Sonnet 5	$0.00011	$0.00117
Haiku 4.5	$0.00005	$0.00059

Measured 12d ago against content hash dc597317198f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

tmux-icons 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.

skills/tmux-icons/SKILL.md · 63 lines

What it actually says

tmux-icons: Theme and Icon Customization

Manage the icon theme for the claude-tmux-status plugin. Changes take effect immediately on the next Claude Code lifecycle event (no restart needed).

Arguments

The user invoked this with: $ARGUMENTS

Plugin Location

The plugin root is at: $CLAUDE_PLUGIN_ROOT

If $CLAUDE_PLUGIN_ROOT is empty or not set, check ~/.claude/plugins/ for the claude-tmux-status directory.

Configuration Files

Active config: $CLAUDE_PLUGIN_ROOT/config/active.conf — key=value file with idle, processing, attention mappings
Theme presets: $CLAUDE_PLUGIN_ROOT/config/themes/*.json — JSON files with name, description, and icons fields

Actions

No arguments or "list"

Show the current active config and list all available themes with their icons in a comparison table.

Theme name (e.g., "emoji", "nerd-font", "minimal")

Read the theme JSON from $CLAUDE_PLUGIN_ROOT/config/themes/<name>.json
Write the icons to $CLAUDE_PLUGIN_ROOT/config/active.conf in key=value format (one per line: idle=<icon>, processing=<icon>, attention=<icon>)
Confirm the change and show the new active icons

"set " (e.g., "set attention !!")

Read current active.conf
Replace the line for the given state with the new icon
Write back active.conf
Valid states: idle, processing, attention

"reset"

Read the emoji theme from $CLAUDE_PLUGIN_ROOT/config/themes/emoji.json
Write it to active.conf
Confirm reset to defaults

"create "

Ask the user for icons for each state (idle, processing, attention)
Create a new theme JSON at $CLAUDE_PLUGIN_ROOT/config/themes/<name>.json
Optionally activate it

Response Format

After any change, show the resulting active configuration:

Active tmux icons:
  idle:       <icon>
  processing: <icon>
  attention:  <icon>

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.

12d ago First seen · 63 lines · 54 tokens per session scan A dc597317198f

Subscribe to this mod's changes

tmux-icons is a skill published in the GitHub repository haxybaxy/claude-tmux-status (6 stars, last pushed 1mo ago), licensed MIT. It adds 54 tokens to every session and 586 once invoked, about $0.0003 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 2026-08-31.

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