CommandExecution — Development skill for Claude Code

Command Execution MCP Server for Claude Desktop

Overview

The Command Execution MCP (Model Context Protocol) Server is a secure, controlled tool that allows Claude to execute shell commands directly on your local system. This server provides a safe and flexible way to interact with your computer's command line through Claude's interface.

Key Features

• Secure Command Execution: Runs shell commands with built-in safety checks
• Working Directory Support: Execute commands in specific directories
• Cross-Platform Compatibility: Works on macOS and other Unix-like systems
• Extensive Error Handling: Provides detailed feedback on command execution
• Timeout and Buffer Limits: Prevents runaway or resource-intensive commands

Security Measures

The server implements multiple layers of security:

1. **Dangerous Command Blocking**

   • Prevents execution of potentially harmful commands like rm -rf, sudo, etc.
   • Blocks commands that could compromise system integrity

2. **Execution Constraints**

   • Maximum execution time: 30 seconds
   • Maximum output buffer: 1MB
   • Validates working directory existence

Supported Tools

1. `execute-command`

Execute shell commands with optional working directory specification.

**Parameters:**

• command (required): The shell command to execute
• workingDirectory (optional): Specify the directory for command execution

**Example Usage in Claude:**

execute-command with command="ls -la" and workingDirectory="/Users/yourusername/Documents"

2. `simple-hello`

A basic demonstration tool that returns a greeting.

**Parameters:**

• name (optional): Name to greet (defaults to "World")

**Example Usage in Claude:**

simple-hello with name="Claude"

Installation

1. Prerequisites

• Node.js (v16 or later)
• Claude Desktop
• npm (Node Package Manager)

2. Install Dependencies

cd /path/to/command-execution-tool
npm install @modelcontextprotocol/sdk

3.