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PreToolUse

PreToolUse is a hook for Claude Code from xChechi/xche-ai-app-security-pack. Its token cost is not measured, scanned A, original, MIT.

A pre-tool hook that runs a secret-checking script before Bash commands matching a Git commit. Hooks are automatic actions triggered by a specified event.

In plain words
What is it for?
It is for running a secret guard before Git commits made through Bash.
Why use it?
It can stop a commit when the changes appear to contain secrets, reducing the chance of credentials being stored in the repository.

Hook for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the ai-app-security plugin — 2 skills, 1 hook shipped together

not rated 5repo 4mo ago A scan tokens not measured original MIT

Good fit It is for running a secret guard before Git commits made through Bash.

Compare 6 hooks from other repositories ↓
View source ↗ xChechi/xche-ai-app-security-pack stefannasev.dev
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add xChechi/xche-ai-app-security-pack
Claude Code
/plugin install ai-app-security

Made for: Claude Code.

Or install ai-app-security, the plugin that ships this one along with the rest of its 2 skills, 1 hook.

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.

agentmods badge for PreToolUse

README.md
[![agentmods](https://agentmods.dev/badge/hooks/xchechi/xche-ai-app-security-pack/pre-tool-use/github.svg)](https://agentmods.dev/hooks/xchechi/xche-ai-app-security-pack/pre-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/xchechi/xche-ai-app-security-pack/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/xchechi/xche-ai-app-security-pack/pre-tool-use/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.

agentmods 80×15 button for PreToolUse

Your own site · 80×15
<a href="https://agentmods.dev/hooks/xchechi/xche-ai-app-security-pack/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/xchechi/xche-ai-app-security-pack/pre-tool-use.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

PreToolUse 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 1mo ago.

A static scan of the commands this hook runs, not an audit. A hook is shell that executes on your machine at the event it names, which is why every command in it is printed with what was found.

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/ai-app-security/hooks/hooks.json · 14 lines

What it actually says

{
  "PreToolUse": [
    {
      "matcher": "Bash",
      "hooks": [
        {
          "type": "command",
          "if": "Bash(git commit:*)",
          "command": "bash \"${CLAUDE_PLUGIN_ROOT}/scripts/secret-guard.sh\""
        }
      ]
    }
  ]
}
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.

  1. 1mo ago First seen · 14 lines scan A a1087f375506

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository xChechi/xche-ai-app-security-pack (5 stars, last pushed 4mo ago), licensed MIT. Its token cost is not measured: a hook is shell that never enters the context. 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 2026-08-31.

Claude CodeSecurityai-securityappsecclaudecursordevsecops
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