by josefchen · Claude Skill · ★ 90
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
brew install --cask josefchen/tap/muster
git clone https://github.com/josefchen/muster.git && cd musterTaken from the project's README on GitHub. Check the security audit before running it.
None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →
The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.
| Stars | 90 |
| Forks | 1 |
| Language | Swift |
| Category | Claude Skill |
| License | MIT |
| Quality Score | 62/100 |
| Last Updated | 2026-10-21 |
| Created | 2026-10-12 |
| Platforms | claude-code, cli, codex |
| Est. Tokens | ~17k |
Muster Never keep an agent waiting. A free, open-source Mac menu bar app for your Claude Code, Codex and Cursor sessions. Download for Mac · brew install --cask josefchen/tap/muster · agentmuster.app · Changelog · 简体中文 Two agents ask. ⌥↓ shows why, two presses of ⌥↩ answer them, and you never left what you were doing. Recorded from the app.
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Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.
The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.
Sources & who's responsible: