Eunomia MCP server

The Eunomia MCP Server provides integration between the Eunomia data governance framework and MCP (Model Context Protocol) servers, enabling you to enforce data governance policies on LLM-based applications through the MCP ecosystem.

Installation

To install the Eunomia MCP Server, clone the repository:

git clone https://github.com/whataboutyou-ai/eunomia-mcp-server.git

Usage

The server works by defining "instruments" in an Orchestra configuration that applies governance policies to text flowing through your MCP-based servers.

Creating Configuration Settings

First, create a settings file that defines your MCP server configuration and Eunomia instruments:

from pydantic_settings import BaseSettings
from eunomia.orchestra import Orchestra
from eunomia.instruments import PiiInstrument

class Settings(BaseSettings):
    APP_NAME: str = "mcp-server_orchestra"
    APP_VERSION: str = "0.1.0"
    LOG_LEVEL: str = "info"
    MCP_SERVERS: dict = {
        "web-browser-mcp-server": {
            "command": "uv",
            "args": [
                "tool",
                "run",
                "web-browser-mcp-server"
            ],
            "env": {
                "REQUEST_TIMEOUT": "30"
            }
        }
    }
    ORCHESTRA: Orchestra = Orchestra(
        instruments=[
            PiiInstrument(entities=["EMAIL_ADDRESS", "PERSON"], edit_mode="replace"),
            # Add more instruments as needed
        ]
    )

Running the Server

Run the MCP Orchestra server using the uv tool:

uv --directory "path/to/server/" run orchestra_server

How It Works

When you run the server:

1. It loads your defined settings from environment variables or .env file
2. Launches the Eunomia MCP Server to handle requests
3. Orchestrates external MCP servers as specified in your configuration
4. Applies data governance instruments to process incoming text

Available Instruments

You can use various instruments from the Eunomia framework:

• PiiInstrument: Detects and redacts personally identifiable information
• IdbacInstrument: Implements additional governance policies

Advanced Configuration

You can customize your MCP server by:

• Adding multiple instruments to the Orchestra
• Configuring different MCP servers to work together
• Adjusting environment variables for each server component

Example with Multiple Instruments

ORCHESTRA: Orchestra = Orchestra(
    instruments=[
        PiiInstrument(entities=["EMAIL_ADDRESS", "PERSON"], edit_mode="replace"),
        IdbacInstrument(rules=["no_profanity", "no_financial_advice"]),
        # Other instruments
    ]
)

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "eunomia-mcp-server" '{"command":"uv","args":["--directory","path/to/server/","run","orchestra_server"]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "eunomia-mcp-server": {
            "command": "uv",
            "args": [
                "--directory",
                "path/to/server/",
                "run",
                "orchestra_server"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

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

2. Add this to your configuration file:

{
    "mcpServers": {
        "eunomia-mcp-server": {
            "command": "uv",
            "args": [
                "--directory",
                "path/to/server/",
                "run",
                "orchestra_server"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect