What is gemini-safety-net?

A safety plugin that uses agent hooks to block destructive Git and filesystem commands. Hooks are automatic checks that run when specified agent events occur.

It is for adding command guards to Gemini agent sessions, especially around risky Git and filesystem actions.

It helps prevent commands such as accidental recursive deletion or other destructive operations from changing the repository or computer.

gemini-safety-net — Plugin for Gemini CLI by kenryu42

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/kenryu42/gemini-safety-net

Made for: Gemini CLI.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/kenryu42/gemini-safety-net/gemini-extension/github.svg)](https://agentmods.dev/plugins/kenryu42/gemini-safety-net/gemini-extension)

Your own site

<a href="https://agentmods.dev/plugins/kenryu42/gemini-safety-net/gemini-extension"><img src="https://agentmods.dev/badge/plugins/kenryu42/gemini-safety-net/gemini-extension/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/kenryu42/gemini-safety-net/gemini-extension"><img src="https://agentmods.dev/badge/plugins/kenryu42/gemini-safety-net/gemini-extension.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade C, and why

gemini-safety-net scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 16d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

"rm -rf",

gemini-extension.json · 28 lines

What it actually says

{
  "name": "gemini-safety-net",
  "displayName": "Gemini Safety Net - Blocks destructive git and filesystem commands",
  "version": "2.0.0",
  "hooks": "./hooks/hooks.json",
  "author": "J Liew",
  "license": "MIT",
  "repository": {
    "type": "git",
    "url": "https://github.com/kenryu42/gemini-safety-net.git"
  },
  "homepage": "https://github.com/kenryu42/gemini-safety-net",
  "keywords": [
		"gemini",
		"rm -rf",
		"git",
		"safety net",
		"destructive",
		"command",
		"guard",
		"hook",
		"plugin",
    "extension"
	],
  "dependencies": {
    "node": ">=18.0.0"
  }
}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

16d ago First seen · 28 lines scan C e14d36d9a477

Subscribe to this mod's changes

gemini-safety-net is a plugin published in the GitHub repository kenryu42/gemini-safety-net (2 stars, last pushed 17d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-30.

Security extensions gemini gemini-cli hooks safety-net

gemini-safety-net

Getting it into your agent

Wrote this? Show the measurements

Grade C, and why

Recursive force deletehighDestructive command

What it actually says

What this file has done since we first saw it

Other plugins, from other repositories

ccmanager-config

looker

cloud-sql-postgresql

knowledge-catalog

firestore-native

alloydb