Growthbook MCP Server

Created By

growthbook7 months ago

The official GrowthBook MCP Server lets you create feature flags, review experiments, and more right from your favorite AI tool.

# ab testing

# feature flags

Overview Content Tools Comments

Overview

GrowthBook is an open source feature flagging and experimentation platform.

Our official MCP Server lets you create and read feature flags, review experiments, set up SDK connections, search docs, generate types, and more.

Prerequisites

Node.js: Check if you have it by running node -v. Install it from nodejs.org
GrowthBook API Key: To create a new key, go to Settings → API Keys → New Secret Key. Use this key in the next step. Installation We cover how to connect the GrowthBook MCP server for the most popular tools below, but the installation steps are similar for most AI tools.

Configuration includes 4 environment variables. Here's what they mean:

Variable Name	Status	Description
GB_API_KEY	Required	A GrowthBook API key.
GB_USER	Required	The name attached to any created flags.
GB_API_URL	Optional	Your GrowthBook API URL. Defaults to `https://api.growthbook.io`.
GB_APP_ORIGIN	Optional	Your GrowthBook app URL Defaults to `https://app.growthbook.io`.

GrowthBook Cloud users only need to configure GB_API_KEY and GB_USER.

Cursor

Open Cursor Settings → MCP
Click Add new global MCP server
Add an entry for the GrowthBook MCP, following the pattern below:

{
  "mcpServers": {
    "growthbook": {
      "command": "npx",
      "args": ["-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

{
  "mcpServers": {
    "growthbook": {
      "command": "cmd",
      "args": ["/c", "npx", "-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

{
  "mcpServers": {
    "growthbook": {
      "command": "wsl",
      "args": ["npx", "-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

{
  "mcpServers": {
    "growthbook": {
      "command": "npx",
      "args": ["-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

Save the settings.

You should now see a green active status after the server successfully connects!

GrowthBook MCP in Cursor

VS Code

Open User Settings (JSON)
Add an MCP entry:

{
  "servers": {
    "growthbook": {
      "command": "npx",
      "args": ["-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

{
  "servers": {
    "growthbook": {
      "command": "cmd",
      "args": ["/c", "npx", "-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

{
  "servers": {
    "growthbook": {
      "command": "wsl",
      "args": ["npx", "-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

{
  "servers": {
    "growthbook": {
      "command": "npx",
      "args": ["-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

Save your settings. In your file, a Start button will appear. Click it to the start the server.

In CoPilot Chat, you'll see a tool icon, indicating the server is connected successfully. GrowthBook MCP is now ready to use in VS Code.

GrowthBook MCP in VS Code Copilot

Claude Desktop

Open Settings → Developer
Click Edit Config
Open claude_desktop_config.json
Add the following configuration:

{
  "mcpServers": {
    "growthbook": {
      "command": "npx",
      "args": ["-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

{
  "mcpServers": {
    "growthbook": {
      "command": "cmd",
      "args": ["/c", "npx", "-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

{
  "mcpServers": {
    "growthbook": {
      "command": "wsl",
      "args": ["npx", "-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

{
  "mcpServers": {
    "growthbook": {
      "command": "npx",
      "args": ["-y", "@growthbook/mcp@latest"],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_API_URL": "YOUR_API_URL",
        "GB_APP_ORIGIN": "YOUR_APP_ORIGIN",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

Save the config and restart Claude

A hammer icon will appear in the chat window, indicating that your GrowthBook MCP server is connected and available for use!

Next steps

Now that you're connected, start using GrowthBook's MCP tools directly from your editor to:

Add new flags to your code and GrowthBook
Generate type definitions for your flags for typesafe feature flagging
Remove stale flags from your code automatically
Search the GrowthBooks docs without leaving the editor
Check out the GrowthBook MCP Server code on GitHub

Join our community Slack for additional tips and tricks

Server Config

{
  "mcpServers": {
    "growthbook": {
      "command": "npx",
      "args": [
        "-y",
        "@growthbook/mcp"
      ],
      "env": {
        "GB_API_KEY": "YOUR_API_KEY",
        "GB_USER": "YOUR_NAME"
      }
    }
  }
}

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