首頁技能地圖學習路線六大區如何寫出好技能

name	`git-guardrails-claude-code`
description (EN)	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.
說明 (繁中)	設定 Claude Code hooks 來在執行前阻擋危險的 git 命令（push、reset --hard、clean、branch -D 等）。當使用者想要防止破壞性的 git 操作、新增 git 安全 hooks，或在 Claude Code 中阻擋 git push/reset 時使用。

git-guardrails-claude-code

在 Claude Code 的鉤子裡擋下危險 git 指令，防止手滑出事。

Setup Git Guardrails

設定 Git 護欄（Setup Git Guardrails）

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

設定一個 PreToolUse hook，在 Claude 執行危險 git 命令之前攔截並阻擋它們。

What Gets Blocked

會被阻擋的內容

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

git push（所有變體，包含 --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.

當被阻擋時，Claude 會看到一則訊息，告訴它沒有權限存取這些命令。

Steps

步驟

1. Ask scope

1. 詢問範圍

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

詢問使用者：只為此專案安裝（.claude/settings.json）還是所有專案（~/.claude/settings.json）？

2. Copy the hook script

2. 複製 hook 腳本

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

隨附的腳本位於：scripts/block-dangerous-git.sh

Copy it to the target location based on scope:

根據範圍將它複製到目標位置：

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

專案：.claude/hooks/block-dangerous-git.sh
全域：~/.claude/hooks/block-dangerous-git.sh

Make it executable with chmod +x.

用 chmod +x 使它可執行。

3. Add hook to settings

3. 將 hook 加入設定

Add to the appropriate settings file:

加到適當的設定檔：

Project (.claude/settings.json):

專案（.claude/settings.json）：

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

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

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

全域（~/.claude/settings.json）：

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

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

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

如果設定檔已經存在，將 hook 合併到既有的 hooks.PreToolUse 陣列中 — 不要覆寫其他設定。

4. Ask about customization

4. 詢問客製化

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

詢問使用者是否要從阻擋清單中新增或移除任何模式。據此編輯已複製的腳本。

5. Verify

5. 驗證

Run a quick test:

執行一個快速測試：

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

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

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

應該以代碼 2 結束，並在 stderr 列印一則 BLOCKED 訊息。