MCP Builder is a Python-based server that installs and configures other MCP servers for integration with MCP clients like Claude Desktop.

Install MCP servers from package repositories (PyPI or npm packages) using install_repo_mcp_server
Install MCP servers from local directories using install_local_mcp_server for locally cloned code
Configure installed servers with custom environment variables and command-line arguments
Automatically detect server type (Python or Node.js) during installation
Cross-platform compatibility supporting Windows, macOS, and Linux
Client integration by automatically modifying Claude Desktop's configuration file to register installed servers

mcp-builder

A Python-based MCP server to install other MCP servers.

The purpose of this server is to provide a complete, user-friendly, and cross-platform way to install and configure MCP servers.

TODO

Support for more MCP Clients (e.g. Cursor, Windsurf, ...)
Support for more MCP server types and sources (e.g., Node.js, Java, etc.)
Support recovery mechanism for failed installations
...

Features

Package Repository Installation: Install MCP servers from PyPI or npm packages
Local Installation: Install MCP servers from local directories
Configuration Management: Configure environment variables and arguments for installed servers
Automatic Detection: Automatically detect the type of MCP server (Node.js or Python)
Cross-Platform Support: Works on Windows, macOS, and Linux

Related MCP server: Python REPL MCP Server

Requirements

Python 3.10 or higher
pip (for Python packages)
Node.js and npm (optional, for JavaScript packages)

Installation

Install from Source

git clone https://github.com/xd3an/mcp-builder.git cd mcp-builder pip install -e .

Usage

Running Directly

After installation, you can run the MCP Builder directly:

# Using the entry point mcpbuilder # Or as a module python -m mcp_builder.server

Development Mode

For development and testing, you can use the MCP CLI tools:

# Install MCP CLI tools pip install "mcp[cli]" # Run in development mode mcp dev path/to/mcp_builder/server.py # npx @modelcontextprotocol/inspector npx @modelcontextprotocol/inspector python -m mcp_builder.server

MCP Client Integration

Claude Desktop Integration

To use MCP Builder with Claude Desktop, add it to your claude_desktop_config.json file:

{ "mcpServers": { "mcp-builder": { "command": "python", "args": [ "-m", "mcp_builder.server" ] } } }

The configuration file is located at:

Windows: %APPDATA%\Claude\claude_desktop_config.json
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Linux: ~/.config/Claude/claude_desktop_config.json

Example Commands

Once integrated with Claude Desktop, you can ask Claude to:

read https://github.com/microsoft/playwright-mcp help me install playwright-mcp in my claude config

demo image

How It Works

MCP Builder modifies the Claude Desktop configuration file to register MCP servers. It supports:

Node.js Packages: Installs using npx and configures Claude to use them
Python Packages: Configures Claude to use Python modules
Local Repositories: Installs dependencies and configures Claude to use local code

MCP Builder

mcp-builder

TODO

Features

Requirements

Installation

Install from Source

Usage

Running Directly

Development Mode

MCP Client Integration

Claude Desktop Integration

Example Commands

How It Works

Resources

Tools

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