Unleash Feature Flag MCP Server

by ylin6

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An MCP server that enables AI agents to manage feature flags in the Unleash feature management system via the Unleash API. It is intended for developers and teams using AI assistants like Cursor or Claude to interact with Unleash programmatically.

Explore

This repository contains a Model Context Protocol (MCP) server for interacting with Unleash feature flag management system. It allows AI agents to manage feature flags through the Unleash API.

Retrieves all feature flags within a specific project.

Parameters:

- projectId: The ID of the project

Creates a new feature flag within a project.

Parameters:

- projectId: The ID of the project
- name: The name of the feature flag
- description: A description of the feature flag
- type: The type of the feature flag (e.g., "release", "experiment", "operational", "kill-switch")

Updates an existing feature flag.

Parameters:

- projectId: The ID of the project
- featureId: The ID of the feature flag
- description: A new description for the feature flag
- type: A new type for the feature flag

Retrieves details about a specific feature flag.

Parameters:

- projectId: The ID of the project
- featureId: The ID of the feature flag

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below

Plugin Name Unleash Feature Flag MCP Server

Command (node, npx, python, etc.)

Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

From the repository

You can install the package from npm:

npm install -g @ylin6/unleash-ff-mcp-server

Or run it directly using npx:

npx @ylin6/unleash-ff-mcp-server

The MCP server provides the following tools for managing feature flags:

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "unleash feature flag mcp server": {
            "unleash-ff-mcp-server": {
                "command": "npx",
                "args": [
                    "@ylin6/unleash-ff-mcp-server"
                ]
            }
        }
    }
}

McpServers

{
    "unleash-ff-mcp-server": {
        "command": "npx",
        "args": [
            "@ylin6/unleash-ff-mcp-server"
        ]
    }
}

This repository contains a Model Context Protocol (MCP) server for interacting with Unleash feature flag management system. It allows AI agents to manage feature flags through the Unleash API.

What is MCP?

The Model Context Protocol (MCP) is a specification for enabling AI models to interact with external tools and data sources. This server implements the MCP protocol for Unleash, allowing AI assistants to manage feature flags programmatically.

Installation

You can install the package from npm:

npm install -g @ylin6/unleash-ff-mcp-server

Or run it directly using npx:

npx @ylin6/unleash-ff-mcp-server

Configuration

The server requires the following environment variables:

- UNLEASH_API_URL: The URL of your Unleash API instance
- UNLEASH_AUTH_TOKEN: The authentication token for your Unleash instance

Available Tools

The MCP server provides the following tools for managing feature flags:

Get Projects

Retrieves a list of all projects in the Unleash instance.

Get Features

Retrieves all feature flags within a specific project.

Parameters:

- projectId: The ID of the project

Create Feature Flag

Creates a new feature flag within a project.

Parameters:

Update Feature Flag

Updates an existing feature flag.

Parameters:

- projectId: The ID of the project
- featureId: The ID of the feature flag
- description: A new description for the feature flag
- type: A new type for the feature flag

Get Feature Flag

Retrieves details about a specific feature flag.

Parameters:

- projectId: The ID of the project
- featureId: The ID of the feature flag

Using with Cursor

To use this MCP server with Cursor, use the following command in your cursor settings

env UNLEASH_API_URL=XXXX UNLEASH_AUTH_TOKEN=XXX npx -y @ylin6/unleash-ff-mcp-server

Examples

Example conversation with Cursor/Claude:

You: Show me all the feature flags in the 'dashboard' project Claude: I'll fetch all the feature flags in the 'dashboard' project for you. [Claude uses the getFeatures tool with projectId='dashboard']

Claude: Here are all the feature flags in the 'website' project: - new-homepage (type: release) - dark-mode (type: experiment) - beta-footer (type: operational) ...

Development

To inspect the MCP server's operations, you can run:

npm run inspect

This uses the MCP inspector to analyze request/response patterns.

License

ISC

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About

Explore

Setting up with Highlight

From the repository

Claude Desktop / Cursor

McpServers

What is MCP?

Installation

Configuration

Available Tools

Get Projects

Get Features

Create Feature Flag

Update Feature Flag

Get Feature Flag

Using with Cursor

Examples

Development

License

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