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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.

▶ 觀看演示 📦 安裝 💡 使用場景

為什麼要用

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

即時演示

實際使用效果

就緒

安裝

選擇你的客戶端

~/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
    }
  }
}

開啟 Claude Desktop → Settings → Developer → Edit Config。儲存後重啟應用。

~/.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 使用與 Claude Desktop 相同的 mcpServers 格式。專案級設定優先於全域。

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
    }
  }
}

點擊 Cline 側欄中的 MCP Servers 圖示，然後選 "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
    }
  }
}

格式與 Claude Desktop 相同。重啟 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 使用伺服器物件陣列，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 儲存後熱重載。

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 驗證，claude mcp remove 移除。

使用場景

實戰用法： Claude Code Safety Net

Install the safety net into Claude Code

👤 Claude Code users ⏱ ~15 min intermediate

何時使用： You've been bitten by an agent overwriting uncommitted changes.

步驟

Clone

git clone into ~/.claude/skills/safety-net✓ 已複製

→ Skill directory present
Wire hooks

Run the included setup; settings.json gets PreToolUse entries.✓ 已複製

→ Hooks active
Test

Ask Claude to git reset --hard; expect block.✓ 已複製

→ Block triggered

結果： Destructive ops require explicit override.

組合

與其他 MCP 搭配，撬動十倍槓桿

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✓ 已複製

工具

此 MCP 暴露的能力

工具	輸入參數	何時呼叫	成本
hook-driven	(see docs)	No callable tools; activates via PreToolUse hooks	1 call

成本與限制

運行它的成本

API 配額: N/A
每次呼叫 Token 數: 0
費用: Free
提示: Start in soft-warn mode; promote to hard-block after a week of clean runs

安全

權限、密鑰、影響範圍

最小權限： hooks-read hooks-write

憑證儲存： None

資料出站： None

故障排查

常見錯誤與修復

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