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Claude Code Safety Net

Name: Claude Code Safety Net (Claude Skill)
Author: kenryu42

作者 kenryu42 · kenryu42/claude-code-safety-net

A hooks-driven safety net for Claude Code — interceptors catch rm -rf, git reset --hard, force pushes, and uncommitted destructive edits.

Installs as a Claude Code plugin with PreToolUse hooks. Each potentially destructive operation is intercepted and either confirmed or refused based on rules. Includes rules for git, file system, npm, and arbitrary bash.

▶ 观看演示 📦 安装 💡 使用场景

为什么要用

核心特性

PreToolUse hook interceptors
Categorized rules (git / fs / pkg / bash)
Auto-block force-push to main
Detect uncommitted-work-overwriting edits
Soft-warn vs hard-block modes
Rules editable per project

实时演示

实际使用效果

就绪

安装

选择你的客户端

~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "claude-code-safety-net": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/kenryu42/claude-code-safety-net",
        "~/.claude/skills/safety-net"
      ],
      "_inferred": true
    }
  }
}

打开 Claude Desktop → Settings → Developer → Edit Config。保存后重启应用。

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "claude-code-safety-net": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/kenryu42/claude-code-safety-net",
        "~/.claude/skills/safety-net"
      ],
      "_inferred": true
    }
  }
}

Cursor 使用与 Claude Desktop 相同的 mcpServers 格式。项目级配置优先于全局。

VS Code → Cline → MCP Servers → Edit

{
  "mcpServers": {
    "claude-code-safety-net": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/kenryu42/claude-code-safety-net",
        "~/.claude/skills/safety-net"
      ],
      "_inferred": true
    }
  }
}

点击 Cline 侧栏中的 MCP Servers 图标，然后选 "Edit Configuration"。

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "claude-code-safety-net": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/kenryu42/claude-code-safety-net",
        "~/.claude/skills/safety-net"
      ],
      "_inferred": true
    }
  }
}

格式与 Claude Desktop 相同。重启 Windsurf 生效。

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "claude-code-safety-net",
      "command": "git",
      "args": [
        "clone",
        "https://github.com/kenryu42/claude-code-safety-net",
        "~/.claude/skills/safety-net"
      ]
    }
  ]
}

Continue 使用服务器对象数组，而非映射。

~/.config/zed/settings.json

{
  "context_servers": {
    "claude-code-safety-net": {
      "command": {
        "path": "git",
        "args": [
          "clone",
          "https://github.com/kenryu42/claude-code-safety-net",
          "~/.claude/skills/safety-net"
        ]
      }
    }
  }
}

加入 context_servers。Zed 保存后热重载。

claude mcp add claude-code-safety-net -- git clone https://github.com/kenryu42/claude-code-safety-net ~/.claude/skills/safety-net

一行命令搞定。用 claude mcp list 验证，claude mcp remove 卸载。

使用场景

实战用法： Claude Code Safety Net

Install the safety net into Claude Code

👤 Claude Code users ⏱ ~15 min intermediate

何时使用： You've been bitten by an agent overwriting uncommitted changes.

步骤

Clone

git clone into ~/.claude/skills/safety-net✓ 已复制

→ Skill directory present
Wire hooks

Run the included setup; settings.json gets PreToolUse entries.✓ 已复制

→ Hooks active
Test

Ask Claude to git reset --hard; expect block.✓ 已复制

→ Block triggered

结果： Destructive ops require explicit override.

组合

与其他 MCP 搭配，撬动十倍杠杆

claude-code-safety-net + filesystem

Pairs naturally with any agent doing repo edits

Combine claude-code-safety-net with filesystem: Pairs naturally with any agent doing repo edits✓ 已复制

工具

此 MCP 暴露的能力

工具	输入参数	何时调用	成本
hook-driven	(see docs)	No callable tools; activates via PreToolUse hooks	1 call

成本与限制

运行它的成本

API 配额: N/A
每次调用 Token 数: 0
费用: Free
提示: Start in soft-warn mode; promote to hard-block after a week of clean runs

安全

权限、密钥、影响范围

最小权限： hooks-read hooks-write

凭据存储： None

数据出站： None

故障排查

常见错误与修复

Hooks not firing

Confirm settings.json was actually updated; restart Claude Code

False positives on benign git ops

Tune the per-project rules file

替代方案