Yes, Growthbook is free to use.

How do I install Growthbook?

Growthbook is a local plugin. Install it using npm package: @growthbook/mcp and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

What credentials does Growthbook need?

Growthbook requires the following credentials or environment variables: GB_API_KEY, GB_EMAIL, GB_API_URL, GB_APP_ORIGIN, GB_HTTP_HEADER_*. You can find setup instructions on the server detail page.

What AI apps work with Growthbook?

Growthbook uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Growthbook MCP Server

by Growthbook

Developer ToolsLow Risk10.0MCP RegistryLocal

Free

Server data from the Official MCP Registry

MCP Server for interacting with GrowthBook

About

MCP Server for interacting with GrowthBook

What You'll Need

Set these up before or after installing:

A GrowthBook API key or PAT.Optional

Environment variable: GB_API_KEY

Your email address used with GrowthBook. Used when creating feature flags and experiments.Optional

Environment variable: GB_EMAIL

Your GrowthBook API URL. Defaults to `https://api.growthbook.io`.Optional

Environment variable: GB_API_URL

Your GrowthBook app URL Defaults to `https://app.growthbook.io`.Optional

Environment variable: GB_APP_ORIGIN

Custom HTTP headers to include in all GrowthBook API requests. Use the pattern GB_HTTP_HEADER_<NAME> where <NAME> is converted to proper HTTP header format. Examples: GB_HTTP_HEADER_X_TENANT_ID=abc123, GB_HTTP_HEADER_CF_ACCESS_TOKEN=<token>. Multiple custom headers can be configured.Optional

Environment variable: GB_HTTP_HEADER_*

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-growthbook-growthbook-mcp": {
      "env": {
        "GB_EMAIL": "your-gb-email-here",
        "GB_API_KEY": "your-gb-api-key-here",
        "GB_API_URL": "your-gb-api-url-here",
        "GB_APP_ORIGIN": "your-gb-app-origin-here",
        "GB_HTTP_HEADER_*": "your-gb-http-header-*-here"
      },
      "args": [
        "-y",
        "@growthbook/mcp"
      ],
      "command": "npx"
    }
  }
}

Security Report

10.0

Low Risk10.0Low Risk

Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.

3 files analyzed · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

file_system

Check that this permission is expected for this type of plugin.

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Growthbook MCP Server

About

What You'll Need

How to Install

Security Report

Permissions Required

Findings (1)

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