Claude Code mod
collision-guard
Warns when two Claude Code sessions on this machine edit the same file, and holds a git command once when it would stage, commit, stash or discard another session's uncommitted edits.
Install
/plugin marketplace add joaosavi/cockpit
/plugin install collision-guard@cockpitMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: runs processes, writes files, reads files, reads env vars, draws
- Sees
- every tool call
- Hooks
session.startturn.starttool.callsession.end
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- joaosavi/cockpit
- Folder
collision-guard- Marketplace
cockpit- Author
- João Savi
- License
- MIT
- Last updated
- 5 November 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is collision-guard?
Warns when two Claude Code sessions on this machine edit the same file, and holds a git command once when it would stage, commit, stash or discard another session's uncommitted edits. It is a mod for Claude Code, from joaosavi/cockpit on GitHub.
What can the collision-guard mod access?
Its widest reach is "writes or runs" (runs processes, writes files, reads files, reads env vars, draws). It sees every tool call. Like any mod, it runs with your permissions.
How do I install collision-guard?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add joaosavi/cockpit and then /plugin install collision-guard@cockpit.
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