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mcp-rancher: Hook for Claude Code

.claude/settings.json

PreToolUse is a hook for Claude Code from rex/mcp-rancher. Its token cost is not measured, scanned A, original, MIT.

A pre-tool hook that runs checks before the agent uses shell or file-editing tools.

In plain words
What is it for?
Use it to protect Bash, reading, searching, and editing operations with the project's guard and gate scripts.
Why use it?
It guards shell commands and enforces required project rules before changes or file access occur.

Hook for Claude Code

Written for Claude Code: $CLAUDE_PROJECT_DIR variable.

This is rex/mcp-rancher's own configuration. It tells Claude Code how to work on mcp-rancher itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-rancher configures →

One of 7 entries in settings.json upstream. Installing this one merges just its entry into your config; the other 6 are separate, each on its own page.

not rated 1repo changed 4d ago A scan tokens not measured original MIT
View source ↗ rex/mcp-rancher
Reuse

Borrowing it

Nothing to install: this file belongs to rex/mcp-rancher. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/rex/mcp-rancher/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/rex/mcp-rancher

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.

agentmods badge for PreToolUse

README.md
[![agentmods](https://agentmods.dev/badge/hooks/rex/mcp-rancher/pre-tool-use.svg)](https://agentmods.dev/hooks/rex/mcp-rancher/pre-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/rex/mcp-rancher/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/rex/mcp-rancher/pre-tool-use.svg" alt="Measured on agentmods" 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 4d 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.

.claude/settings.json · 13 lines

What it actually says

{
  "PreToolUse": [
    {
      "matcher": "Bash",
      "hooks": [
        {
          "type": "command",
          "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/bash-guard.sh"
        }
      ]
    }
  ]
}
Same file

What else settings.json configures

This page is one entry in a file that holds 7. Installing the file brings all of them; each is measured and scanned on its own page.

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. 4d ago Changed · -9 lines a9217c163c78
  2. 8d ago First seen · 22 lines scan A 61149b9d3c50

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository rex/mcp-rancher (1 stars, last pushed today), 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.

DevOps and cloudai-appanthropicclaudecluster-managementk8s
Related

Other hooks, from other repositories

Stop

Runs when the agent finishes a response, running python3. From dbc-oduffy/coordinator-claude.

dbc-oduffy/coordinator-claude · not measured

SessionStart

Runs when a session starts, running "/path/to/shipworthy/hooks/session-start". From Vimalk0703/shipworthy.

Vimalk0703/shipworthy · not measured

PostToolUse

Runs after a tool call finishes for Write and Edit tool calls, executing format_and_lint.sh. From supabase/supabase.

supabase/supabase · not measured

SessionStart

Runs when a session starts on startup, executing install_pkgs.sh. From supabase/supabase.

supabase/supabase · not measured

SessionStart

Runs when a session starts, executing on-start.js via node. From google-gemini/gemini-cli.

google-gemini/gemini-cli · not measured

PreToolUse

Runs before the agent uses a tool for Bash tool calls, running an inline shell check. From apache/superset.

apache/superset · not measured