
This sets up a pre-execution hook that blocks Claude Code from running destructive git commands like push, reset --hard, clean -f, and branch -D. You get to choose whether to install it per project or globally, and it intercepts the bash tool before anything dangerous runs. It's straightforward: the hook script checks the command against a blocklist and exits with code 2 if there's a match. Honestly, this is the kind of thing you want if you're letting Claude make changes in a repo where one wrong push could ruin someone's day. You can customize which patterns to block after installation.
$ npx -y skills add vinvcn/mattpocock-skills-zh-cn --skill git-guardrails-claude-code --agent claude-codeInstalls into .claude/skills of the current project.
设置一个 PreToolUse hook,在 Claude 执行危险 git commands 前拦截并阻止它们。
git push(包括 --force 在内的所有 variants)git reset --hardgit clean -f / git clean -fdgit branch -Dgit checkout . / git restore .被阻止时,Claude 会看到一条 message,说明它无权访问这些 commands。
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)?
bundled script 位于:scripts/block-dangerous-git.sh
根据 scope 复制到目标位置:
.claude/hooks/block-dangerous-git.sh~/.claude/hooks/block-dangerous-git.sh用 chmod +x 让它可执行。
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。
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。
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。
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