What is shell-guard?
shell-guard is a Claude Code mod by youllook that windows shell guard: fixes backslash drive paths in Bash, blocks quote-eating node -e / heredoc patterns, and catches PowerShell/Bash syntax sent to the wrong shell. It is listed under Security and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | youllook |
| Repository | youllook/ClaudeMods |
| Popularity | no public popularity data yet |
| Category | Security |
| Security | Low risk (100/100) |
| Rank | #5,213 of 5,272 Claude Code mods; #534 in Security |
| License | MIT |
| Last commit | 2026-10-06 |
| Hooks | 1 events |
| Sees | Bash calls, PowerShell calls |
| Draws on | nothing |
Is shell-guard safe to install?
shell-guard scores 100/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 8 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts no processes | Pass |
| Writes no files or config | Pass |
| Doesn't read environment variables | Pass |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Passes claude plugin validate | Pass |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.ui.toast | draws interface |
How do I install shell-guard?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/youllook/ClaudeMods claude plugin validate ./ClaudeMods/plugins/shell-guard
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add youllook/ClaudeMods && claude plugin install shell-guard@claude-mods
Or ask Claude to set it up
Paste this into Claude Code and it installs shell-guard for you:
Install the "shell-guard" Claude Code mod from https://github.com/youllook/ClaudeMods/tree/main/plugins/shell-guard. Run claude plugin validate on it first and show me what it can access before you enable it.
More from youllook/ClaudeMods
This repository has 2 Claude Code mods on MCPMods.
- token-weather-cache: Context-window weather band above the prompt, plus a prompt-cache countdown with expiry toasts. Modified from Anthropic' (Low risk)