Danger Zone MCP

Danger Zone MCP

A Model Context Protocol (MCP) server that allows executing predefined commands with safety checks.

Features

• Execute safe commands from configuration
• Execute dangerous commands with native macOS confirmation dialog
• Support for pre-authorized dangerous commands (skip confirmation)
• JSONC support (JSON with comments)
• Multiple configuration file formats supported (.jsonc and .json)
• Fallback to global config in ~/.claude/ if project config not found
• TypeScript implementation
• Works with npx for easy execution

Installation

npm install -g @koinunopochi/danger-zone-mcp

Or use with npx (no installation required):

npx @koinunopochi/danger-zone-mcp

Configuration

Create a configuration file in your project root or home directory:

1. Project-specific config (highest priority):

   • <project>/.claude/.danger-zone-exec.local.jsonc (recommended for comments)
   • <project>/.claude/.danger-zone-exec.local.json

2. Global config (fallback):

   • ~/.claude/.danger-zone-exec.jsonc (recommended for comments)
   • ~/.claude/.danger-zone-exec.json

{
  // Safe commands that can be executed without confirmation
  "commands": [
    {
      "name": "build_project",
      "description": "Build the project",
      "command": "npm",
      "args": ["run", "build"]
    },
    {
      "name": "check_chrome_mcp",
      "description": "Check if MCP Chrome profile instances are running",
      "command": "ps aux | grep -E '(Google Chrome.*mcp-chrome-profile)' | grep -v grep | wc -l"
    }
  ],
  
  // Dangerous commands that require confirmation
  "dangerZone": [
    {
      "name": "clean_build",
      "description": "Clean all build artifacts",
      "command": "rm -rf dist"
      // Will show confirmation dialog (default behavior)
    },
    {
      "name": "kill_chrome_mcp",
      "description": "Kill all Chrome instances with MCP profile",
      "command": "pkill -f 'Google Chrome.*mcp-chrome-profile'",
      "preAuthorized": true  // Skip confirmation dialog
    }
  ]
}

Usage with Claude Desktop / Claude Code

Add to your Claude configuration:

{
  "mcpServers": {
    "danger-zone": {
      "command": "npx",
      "args": ["@koinunopochi/danger-zone-mcp"]
    }
  }
}

Note: When using Claude Code, the cwd is automatically set to your current project directory.

Development

# Install dependencies
npm install

# Build
npm run build

# Run in development mode
npm run dev

Configuration Options

Command Properties

• name: Tool name (used as exec_<name>)
• description: Description shown in Claude
• command: Shell command to execute
• args: Optional array of default arguments

DangerZone Properties

• name: Tool name (used as danger_<name>)
• description: Description shown in Claude
• command: Shell command to execute
• preAuthorized: Skip confirmation dialog if true (optional, defaults to false)

Safety Features

• Dangerous commands show native macOS confirmation dialog by default
• Pre-authorized commands can skip confirmation when explicitly configured
• Commands are sandboxed to configured list
• Clear separation between safe and dangerous operations