About

Imported from terminalskills/skills (skills/git-guardrails-claude-code/SKILL.md). Install upstream with npx skills add terminalskills/skills --skill git-guardrails-claude-code. Copyright stays with the author (Apache-2.0).

Setup Git Guardrails

Name: git-guardrails-claude-code
Author: terminalskills

Sets up a PreToolUse hook that intercepts and blocks dangerous git commands before Claude executes them.

What Gets Blocked

git push (all variants including --force)
git reset --hard
git clean -f / git clean -fd
git branch -D
git checkout . / git restore .

When blocked, Claude sees a message telling it that it does not have authority to access these commands.

Steps

1. Ask scope

Ask the user: install for this project only (.claude/settings.json) or all projects (~/.claude/settings.json)?

2. Copy the hook script

The bundled script is at: scripts/block-dangerous-git.sh

Copy it to the target location based on scope:

Project: .claude/hooks/block-dangerous-git.sh
Global: ~/.claude/hooks/block-dangerous-git.sh

Make it executable with chmod +x.

3. Add hook to settings

Add to the appropriate settings file:

Project (.claude/settings.json):

{
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Bash",
        "hooks": [
          {
            "type": "command",
            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/block-dangerous-git.sh"
          }
        ]
      }
    ]
  }
}

Global (~/.claude/settings.json):

{
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Bash",
        "hooks": [
          {
            "type": "command",
            "command": "~/.claude/hooks/block-dangerous-git.sh"
          }
        ]
      }
    ]
  }
}

If the settings file already exists, merge the hook into existing hooks.PreToolUse array — don't overwrite other settings.

4. Ask about customization

Ask if user wants to add or remove any patterns from the blocked list. Edit the copied script accordingly.

5. Verify

Run a quick test:

echo '{"tool_input":{"command":"git push origin main"}}' | <path-to-script>

Should exit with code 2 and print a BLOCKED message to stderr.

Use it

Copy one of these into your project. Installing also returns the manifest and these snippets.

yaml

targets:
  - https://api.opensmartroute.ai/api/v1/registry/terminalskills-skills-git-guardrails-claude-code/manifest   # or paste the manifest below

Manifest

An Open Capability Manifest: the router reads it to know what this does, what it costs and when to pick it.

terminalskills-skills-git-guardrails-claude-code.ocm.jsonjson

{
  "ocm": "1",
  "id": "terminalskills-skills-git-guardrails-claude-code",
  "kind": "skill",
  "name": "git-guardrails-claude-code",
  "description": "Set up Claude Code hooks to block dangerous git commands (push, reset --hard, clean, branch -D, etc.) before they execute. Use when: user wants to prevent destructive git operations, add git safety hooks, or block git push/reset in Claude Code.",
  "publisher": "terminalskills",
  "version": "1.0.0",
  "capabilities": {
    "domains": [
      "coding"
    ],
    "tags": [
      "skill-md",
      "git",
      "safety",
      "claude-code",
      "hooks",
      "guardrails",
      "skills-sh"
    ],
    "languages": [
      "en"
    ]
  },
  "quality_prior": 0.6,
  "examples": [
    "Set up Claude Code hooks to block dangerous git commands (push, reset --hard, clean, branch -D, etc.) before they execute. Use when: user wants to prevent destructive git operations, add git safety hooks, or block git push/reset in Claude Code."
  ],
  "primary": false,
  "metadata": {
    "source": {
      "provider": "skills.sh",
      "repository": "https://github.com/terminalskills/skills",
      "path": "skills/git-guardrails-claude-code/SKILL.md",
      "ref": "HEAD",
      "url": "https://github.com/terminalskills/skills/blob/HEAD/skills/git-guardrails-claude-code/SKILL.md",
      "key": "terminalskills/skills/skills/git-guardrails-claude-code/SKILL.md"
    },
    "compatibility": "Claude Code, any AI coding agent",
    "license": "Apache-2.0"
  },
  "instructions": "# Setup Git Guardrails\n\nSets up a PreToolUse hook that intercepts and blocks dangerous git commands before Claude executes them.\n\n## What Gets Blocked\n\n- `git push` (all variants including `--force`)\n- `git reset --hard`\n- `git clean -f` / `git clean -fd`\n- `git branch -D`\n- `git checkout .` / `git restore .`\n\nWhen blocked, Claude sees a message telling it that it does not have authority to access these commands.\n\n## Steps\n\n### 1. Ask scope\n\nAsk the user: install for **this project only** (`.claude/settings.json`) or **all projects** (`~/.claude/settings.json`)?\n\n### 2. Copy the hook script\n\nT",
  "cost": {
    "context_tokens": 502
  }
}

Fetch it by URL: GET /api/v1/registry/terminalskills-skills-git-guardrails-claude-code/manifest?version=1.0.0

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