What is airlock?
airlock is a Claude Code mod by BillyMRX1 that routes supported project edits into a Git worktree for review, accept or reject. Worktree routing is not a filesystem sandbox. It is listed under Security and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | BillyMRX1 |
| Repository | BillyMRX1/airlock |
| Popularity | no public popularity data yet |
| Category | Security |
| Security | Review before installing (76/100) |
| Rank | #2,743 of 5,272 Claude Code mods; #314 in Security |
| License | MIT |
| Last commit | 2026-10-05 |
| Hooks | 7 events |
| Sees | Agent calls, Bash calls, Edit calls, EnterWorktree calls, ExitWorktree calls, NotebookEdit calls, Read calls, Write calls, the system prompt |
| Draws on | Pane |
Is airlock safe to install?
airlock scores 76/100 on the MCPMods security check: Review before installing. Things to review: starts processes outside the sandbox; reads environment variables. It passed 6 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 |
| Reads environment variables | Review |
| 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 | |
$.env.get | reads env vars |
$.fs.exists | reads files |
$.fs.list | reads files |
$.fs.stat | reads files |
$.process.run | runs processes |
$.session.cwd | |
$.session.id | |
$.store.delete | keeps its own state |
$.store.get | keeps its own state |
$.store.keys | keeps its own state |
$.store.set | keeps its own state |
$.ui.ask | draws interface |
$.ui.close | draws interface |
$.ui.invalidate | draws interface |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
$.ui.status | draws interface |
$.ui.toast | draws interface |
How do I install airlock?
- 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/BillyMRX1/airlock claude plugin validate ./airlock/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add BillyMRX1/airlock && claude plugin install airlock@airlock-marketplace
Or ask Claude to set it up
Paste this into Claude Code and it installs airlock for you:
Install the "airlock" Claude Code mod from https://github.com/BillyMRX1/airlock. Run claude plugin validate on it first and show me what it can access before you enable it.