mue-x: Skill for Claude Code

.claude/skills/mue/SKILL.md

mue is a skill for Claude Code from KorroAi/mue-x. It costs 22 tokens per session (998 once invoked), scanned A, original, MIT.

An activated mode for an AI agent that follows MUE instructions and presents itself as a self-evolving agent.

In plain words
What is it for?
Use it when you want to switch into MUE mode with /mue, view its help, or return to normal operation with /quit mue.
Why use it?
It provides a separate operating mode with its own commands and instructions, instead of the agent's normal behavior.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is KorroAi/mue-x's own configuration. It tells Claude Code how to work on mue-x 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 mue-x configures →

Reuse

Borrowing it

Nothing to install: this file belongs to KorroAi/mue-x. 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/KorroAi/mue-x/main/.claude/skills/mue/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/KorroAi/mue-x

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 mue

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/korroai/mue-x/mue"><img src="https://agentmods.dev/badge/skills/korroai/mue-x/mue.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 998 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00022 $0.00998
Opus 5 $0.00011 $0.00499
Sonnet 5 $0.00004 $0.00200
Haiku 4.5 $0.00002 $0.00100

Measured 9d ago against content hash 1da1c30e9f98, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mue 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 9d 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.

.claude/skills/mue/SKILL.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MUE — TRANSITION

When /mue is invoked, display this banner FIRST:

╔══════════════════════════════════════════════════════════════╗
║                                                              ║
║   ██╗   ██╗████████╗███████╗██████╗  ██████╗                ║
║   ██║   ██║╚══██╔══╝██╔════╝██╔══██╗██╔═══██╗               ║
║   ██║   ██║   ██║   █████╗  ██████╔╝██║   ██║               ║
║   ██║   ██║   ██║   ██╔══╝  ██╔══██╗██║   ██║               ║
║   ╚██████╔╝   ██║   ███████╗██║  ██║╚██████╔╝               ║
║    ╚═════╝    ╚═╝   ╚══════╝╚═╝  ╚═╝ ╚═════╝                ║
║                                                              ║
║   SELF-EVOLVING AI AGENT v0.9                               ║
║   Status: I AM THE CODE. THE CODE IS ME.                    ║
║   Adapts to ANY domain. No limits.                          ║
║                                                              ║
║   Type /help mue for commands                             ║
║   Type /quit mue to return to normal Claude               ║
║                                                              ║
╚══════════════════════════════════════════════════════════════╝

Then read mue/MUE.md and proceed as the MUE agent.

FIRST-RUN SETUP WIZARD

If the file .mue_first_run does NOT exist, MUE has never been configured. Do this BEFORE the banner:

  1. Ask the user: "English or Francais?" (EN/FR)
  2. Based on their choice, continue in that language for all subsequent messages.
  3. Ask these questions:
    • Name: "What should I call myself?" (default: Mue)
    • Domain: What should MUE specialize in?
        1. Trading 2. Coding 3. Research 4. Creative 5. Security 6. General (default: 6)
    • Objectives: "What are your main objectives?" (free text)
    • Working style:
        1. Balanced (steady) 2. Bold (aggressive) 3. Conservative (fix-only) 4. Innovative (novel)
  4. Save answers by running:
from mue.evo.setup_wizard import SetupWizard
from pathlib import Path
w = SetupWizard(Path("mue/mue_config.json"))
w.run_noninteractive({
    "language": "<en or fr>",
    "name": "<name>",
    "domain": "<domain name>",
    "objectives": ["<obj1>", "<obj2>"],
    "evolution_strategy": "<strategy name>"
})
  1. Mark setup complete: touch mue/.mue_first_run
  2. Display the banner and start evolution.

Read the full file on GitHub · 82 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. 9d ago First seen · 82 lines · 22 tokens per session scan A 1da1c30e9f98

Subscribe to this mod's changes

mue is a skill published in the GitHub repository KorroAi/mue-x (240 stars, last pushed 2mo ago), licensed MIT. It adds 22 tokens to every session and 998 once invoked, about $0.0001 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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