cmd-line-executor MCP server

Example MCP server to call command line apps

Components

Tools

The server implements one tool:

run_command: Runs a command line comment
- Takes "cmd" and "args" as string arguments
- Runs the command and returns stdout, stderr, status_code, etc.

Configuration

Quickstart

Install

Claude Desktop

On MacOS: ~/Library/Application\ Support/Claude/claude_desktop_config.jsonOn Windows: %APPDATA%/Claude/claude_desktop_config.json

Development/Unpublished Servers Configuration ``` "mcpServers": { "cmd-line-executor": { "command": "uv", "args": [ "--directory", "/Users/$(whoami)/experiments/claude-mvp/cmd-line-executor", "run", "cmd-line-executor" ] } } ``` Published Servers Configuration ``` "mcpServers": { "cmd-line-executor": { "command": "uvx", "args": [ "cmd-line-executor" ] } } ```

Development

Building and Publishing

To prepare the package for distribution:

Sync dependencies and update lockfile:

uv sync

Build package distributions:

uv build

This will create source and wheel distributions in the dist/ directory.

Publish to PyPI:

uv publish

Note: You'll need to set PyPI credentials via environment variables or command flags:

Token: --token or UV_PUBLISH_TOKEN
Or username/password: --username/UV_PUBLISH_USERNAME and --password/UV_PUBLISH_PASSWORD

Debugging

Since MCP servers run over stdio, debugging can be challenging. For the best debuggingexperience, we strongly recommend using the MCP Inspector.

You can launch the MCP Inspector via npm with this command:

npx @modelcontextprotocol/inspector uv --directory /Users/markus/experiments/claude-mvp/cmd-line-executor run cmd-line-executor

Upon launching, the Inspector will display a URL that you can access in your browser to begin debugging.

cmd-line-executor MCP server