MAGG

🧲 MAGG - The MCP (Model Context Protocol) Aggregator

An MCP server that manages and aggregates other MCP servers, enabling LLMs to dynamically extend their own capabilities.

What is MAGG?

MAGG (MCP Aggregator) is a meta-MCP server that acts as a central hub for managing multiple MCP servers. It provides tools that allow LLMs to:

Search for new MCP servers and discover setup instructions
Add and configure MCP servers dynamically
Enable/disable servers on demand
Aggregate tools from multiple servers under unified prefixes
Persist configurations across sessions

Think of MAGG as a "package manager for LLM tools" - it lets AI assistants install and manage their own capabilities at runtime.

Key Features

Self-Service Tool Management: LLMs can search for and add new MCP servers without human intervention
Automatic Tool Proxying: Tools from added servers are automatically exposed with configurable prefixes
Smart Configuration: Uses MCP sampling to intelligently configure servers from just a URL
Persistent Configuration: Maintains server configurations in .magg/config.json
Multiple Transport Support: Works with stdio, HTTP, and other MCP transports

Installation

Prerequisites

Python 3.13 or higher
uv, poetry, or pip

Run Directly from GitHub

The easiest way to run MAGG is directly from GitHub using uvx:

# Run with stdio transport (for Claude Desktop, Cline, etc.)
uvx --from git+https://github.com/sitbon/magg.git magg

# Run with HTTP transport (for system-wide access)
uvx --from git+https://github.com/sitbon/magg.git magg serve --http

Local Development

For development, clone the repository and install in editable mode:

# Clone the repository
git clone https://github.com/sitbon/magg.git
cd magg

# Install in development mode with uv (recommended)
uv pip install -e .

# Or with pip
pip install -e .

# Run the CLI
magg --help

Usage

Running MAGG

MAGG can run in two modes:

Stdio Mode (default) - For integration with Claude Desktop, Cline, Cursor, etc.:
magg serve
HTTP Mode - For system-wide access or web integrations:
magg serve --http --port 8000

Available Tools

Once MAGG is running, it exposes the following tools to LLMs:

magg_list_servers - List all configured MCP servers
magg_add_server - Add a new MCP server
magg_remove_server - Remove a server
magg_enable_server / magg_disable_server - Toggle server availability
magg_search_servers - Search for MCP servers online
magg_list_tools - List all available tools from all servers
magg_smart_configure - Intelligently configure a server from a URL
magg_analyze_servers - Analyze configured servers and suggest improvements

Configuration

MAGG stores its configuration in .magg/config.json in your current working directory. This allows for project-specific tool configurations.

Example configuration:

{
  "servers": {
    "calculator": {
      "name": "calculator",
      "source": "https://github.com/executeautomation/calculator-mcp",
      "command": "npx @executeautomation/calculator-mcp",
      "prefix": "calc",
      "enabled": true
    }
  }
}

Adding Servers

Servers can be added in several ways:

Using the LLM (recommended):
"Add the Playwright MCP server" "Search for and add a calculator tool"
Manual configuration via magg_add_server:
name: playwright url: https://github.com/microsoft/playwright-mcp command: npx @playwright/mcp@latest prefix: pw
Direct config editing: Edit .magg/config.json directly

Documentation

For more documentation, see docs/.

This server cannot be installed

security - not tested

license - permissive license

quality - not tested

How are these scores calculated?

hybrid server

The server is able to function both locally and remotely, depending on the configuration or use case.

A meta-MCP server that manages and aggregates other MCP servers, enabling LLMs to dynamically extend their own capabilities by searching for, adding, and configuring tool servers.

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