by GreyhavenHQ · Agent Tool · ★ 286
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
brew install greywall
go install github.com/GreyhavenHQ/greywall/cmd/greywall@latestTaken from the project's README on GitHub.
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.
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 | 286 |
| Forks | 34 |
| Language | Go |
| Category | Agent Tool |
| License | Apache-2.0 |
| Quality Score | 72/100 |
| Open Issues | 23 |
| Last Updated | 2026-08-13 |
| Created | 2026-03-04 |
| Platforms | claude-code, go |
| Est. Tokens | ~18k |
Greywall — Sandbox for AI Coding Agents Greywall is a container-free sandbox for AI coding agents on Linux and macOS, with two complementary modes: — deny-by-default sandbox. Restricts filesystem access, network connections, and system calls to only what you explicitly allow, so tools like Claude Code, Cursor, Codex, and other AI agents can't reach your SSH keys, secrets, or anything outside the...
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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: