What is env-exfil-guard?
env-exfil-guard is a Claude Code mod by baselane-sh that asks before a command prints your environment, echoes a secret variable or sends local data to a remote host. It is listed under Security and has 1 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | baselane-sh |
| Repository | baselane-sh/mods |
| Popularity | 1 GitHub stars |
| Category | Security |
| Security | Low risk (100/100) |
| Rank | #1,555 of 5,272 Claude Code mods; #172 in Security |
| License | MIT |
| Last commit | 2026-10-06 |
| Hooks | 1 events |
| Sees | classic hooks |
| Draws on | nothing |
Is env-exfil-guard safe to install?
env-exfil-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 |
How do I install env-exfil-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/baselane-sh/mods claude plugin validate ./mods/plugins/env-exfil-guard
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add baselane-sh/mods && claude plugin install env-exfil-guard@baselane-mods-dev
Or ask Claude to set it up
Paste this into Claude Code and it installs env-exfil-guard for you:
Install the "env-exfil-guard" Claude Code mod from https://github.com/baselane-sh/mods/tree/main/plugins/env-exfil-guard. Run claude plugin validate on it first and show me what it can access before you enable it.
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