by trailofbits · Codex Skill · ★ 806
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
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 | 806 |
| Forks | 44 |
| Language | Rust |
| Category | Codex Skill |
| License | Apache-2.0 |
| Quality Score | 69/100 |
| Open Issues | 57 |
| Last Updated | 2026-11-04 |
| Created | 2026-04-02 |
| Platforms | claude-code, cli, codex, rust |
| Est. Tokens | ~22k |
coop Isolated VM environments for running Claude Code and Codex. Pronunciation: "coop" (/kuːp/) — one syllable, rhymes with "loop", like the thing you keep chickens in. Not "co-op". coop is a Rust CLI that manages disposable virtual machines where Claude Code and Codex have full tool access: Docker, git, compilers, package managers, all without risk to your host machine.
These tools work well together with coop for enhanced workflows:
Looking for a coop alternative? If you're comparing coop with other codex skill tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.
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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: