Skill

git-guardrails-claude-code

Blocks dangerous git commands (push, reset --hard, clean -f, branch -D) in Claude Code using PreToolUse hooks. Prevents destructive operations before execution.

Git

Bash

security

git-workflow

npx claudepluginhub vinvcn/mattpocock-skills-zh-cn

Tool Access

This skill uses the workspace's default tool permissions.

Preview

设置一个 PreToolUse hook，在 Claude 执行危险 git commands 前拦截并阻止它们。

Supporting Assets

scripts/block-dangerous-git.sh

SKILL.md

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Stats

Stars13

Forks2

Last CommitApr 28, 2026

Actions

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Setup Git Guardrails

设置一个 PreToolUse hook，在 Claude 执行危险 git commands 前拦截并阻止它们。

What Gets Blocked

git push（包括 --force 在内的所有 variants）
git reset --hard
git clean -f / git clean -fd
git branch -D
git checkout . / git restore .

被阻止时，Claude 会看到一条 message，说明它无权访问这些 commands。

Steps

1. Ask scope

询问用户：只为当前 project 安装（.claude/settings.json），还是为所有 projects 安装（~/.claude/settings.json）？

2. Copy the hook script

bundled script 位于：scripts/block-dangerous-git.sh

根据 scope 复制到目标位置：

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

用 chmod +x 让它可执行。

3. Add hook to settings

添加到对应 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"
          }
        ]
      }
    ]
  }
}

如果 settings file 已存在，把 hook merge 到现有 hooks.PreToolUse array 中，不要覆盖其他 settings。

4. Ask about customization

询问用户是否要在 blocked list 中添加或移除 patterns。相应编辑复制后的 script。

5. Verify

运行快速测试：

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

应以 code 2 退出，并向 stderr 打印 BLOCKED message。