What is worktree-guard?
worktree-guard is a Claude Code mod by thieung that guards a shared worktree: stops `git add -A` from staging files this session did not touch, previews destructive git commands, and points at the process holding a busy port. It is listed under Security and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | thieung |
| Repository | thieung/claude-mods |
| Popularity | no public popularity data yet |
| Category | Security |
| Security | Low risk (88/100) |
| Rank | #4,825 of 5,272 Claude Code mods; #499 in Security |
| License | MIT |
| Last commit | 2026-10-05 |
| Hooks | 5 events |
| Sees | Bash calls, every tool call |
| Draws on | Pane, AbovePrompt |
Is worktree-guard safe to install?
worktree-guard scores 88/100 on the MCPMods security check: Low risk. Things to review: starts processes outside the sandbox. It passed 7 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 processes outside the sandbox | Review |
| 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 |
|---|---|
$.command.register | |
$.process.run | runs processes |
$.session.cwd | |
$.session.id | |
$.state.get | |
$.state.set | |
$.ui.ask | draws interface |
$.ui.close | draws interface |
$.ui.log | draws interface |
$.ui.open | draws interface |
$.ui.panes | draws interface |
$.ui.resolve | draws interface |
$.ui.toast | draws interface |
How do I install worktree-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/thieung/claude-mods claude plugin validate ./claude-mods/worktree-guard
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add thieung/claude-mods && claude plugin install worktree-guard@thieung-mods
Or ask Claude to set it up
Paste this into Claude Code and it installs worktree-guard for you:
Install the "worktree-guard" Claude Code mod from https://github.com/thieung/claude-mods/tree/main/worktree-guard. Run claude plugin validate on it first and show me what it can access before you enable it.
More from thieung/claude-mods
This repository has 3 Claude Code mods on MCPMods.
- ak-cockpit: AgentKit cockpit above the prompt: context fill with a handoff nudge, and the active plan's phase and checklist. (Low risk)
- ghost-proc-guard: Stops Claude from starting a second copy of your dev servers on the next free port (monorepos and worktrees included), t (Low risk)