A safety plugin that blocks dangerous Bash commands before they run. Bash is a command-line shell commonly used to manage files and run development tools.

Use it as a protective check whenever an agent is about to run Bash commands.

It helps prevent destructive or unsafe shell commands from being executed accidentally.

bash-guards — Plugin for Claude Code by motlin/claude-code-plugins

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/motlin/claude-code-plugins

Made for: Claude Code.

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/motlin/claude-code-plugins/bash-guards/github.svg)](https://agentmods.dev/plugins/motlin/claude-code-plugins/bash-guards)

Your own site

<a href="https://agentmods.dev/plugins/motlin/claude-code-plugins/bash-guards"><img src="https://agentmods.dev/badge/plugins/motlin/claude-code-plugins/bash-guards/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/motlin/claude-code-plugins/bash-guards"><img src="https://agentmods.dev/badge/plugins/motlin/claude-code-plugins/bash-guards.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 A 0 findings. 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 A, and why

bash-guards scanned grade A with 0 findings 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 3d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/bash-guards/.claude-plugin/plugin.json · 11 lines

What it actually says

{
	"$schema": "https://anthropic.com/claude-code/plugin.schema.json",
	"name": "bash-guards",
	"description": "Block dangerous bash commands before they execute",
	"version": "1.37.0",
	"license": "Apache-2.0",
	"author": {
		"name": "Craig Motlin"
	}
}

Contents

What it installs

The manifest is a name and a version. 1 hook travel with it, and installing the plugin installs all of them. Each is measured on its own page, and each can be installed alone.

Hook PreToolUse A not measured

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.

3d ago Changed 4461cebc2d06
6d ago Changed 492576bd2b13
9d ago Changed 2b39973970c2
29d ago Changed 02cec619f2f3
1mo ago Changed 72fae74fbc64
1mo ago Changed 1d069bf024d8
1mo ago Changed c3e96a2207e8
1mo ago Changed 2adc5b4f6073
1mo ago Changed 57d424c3e02e
1mo ago First seen · 11 lines scan A 2bea77356f85

Subscribe to this mod's changes

bash-guards is a plugin published in the GitHub repository motlin/claude-code-plugins (20 stars, last pushed yesterday), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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