growthbook-mcpOfficial GrowthBook MCP server for creating flags, getting experiments, and more.

— (0)

Reviewed by Daniel Nikulshyn·Updated July 2026

Overview

The GrowthBook MCP server is an official tool for interacting with GrowthBook from an LLM client. It allows users to view experiment details, add feature flags, and more. The server requires a GrowthBook API key or PAT, email address, and optional API URL, app URL, and custom HTTP headers for configuration. The tool is designed for users who want to integrate GrowthBook with their AI tool of choice. The GrowthBook MCP server is open-source and available under the MIT license.

Key features

Experiment details retrieval
Feature flag creation
Support for custom HTTP headers
Configurable API URL and app URL

Pricing

Model: Free
Category: MCP Servers
Rating: No reviews yet

Use cases

Experiment Analysis

Use the GrowthBook MCP server to retrieve and analyze experiment details directly from an LLM client.

Feature Flag Management

Create and manage feature flags in GrowthBook using the MCP server from an LLM client.

Pros & Cons

Pros

Enables interaction with GrowthBook from an LLM client
Supports creating flags and getting experiments
Configurable with environment variables for flexibility

Cons

Requires a GrowthBook API key or PAT for access
Capabilities limited by PAT permissions
Dependent on correct configuration of environment variables

Reviews

No reviews yet. Be the first!

Q&A

What are the main features of the MCP server?

It lets you list bundled GrowthBook skills, read experiment details, and create feature flags via the generic growthbook_call_api tool, all configurable through environment variables and open‑source under MIT.

Asked by Malik Rasheed · Oct 26, 2025

Can I use growthbook-mcp over HTTP instead of stdio?

Yes, set GB_MCP_TRANSPORT=http and optionally GB_MCP_HOST, GB_MCP_PORT, and GB_MCP_URL. The server will listen on the specified port and host for HTTP connections.

Asked by Dara Fitzgerald · Sep 28, 2025

How do I configure custom HTTP headers for the server?

Set environment variables prefixed with GB_HTTP_HEADER_, e.g., GB_HTTP_HEADER_CF_ACCESS_TOKEN, to add any extra request headers that the GrowthBook API requires.

Asked by Xavier Costa · Sep 4, 2025

What credentials are needed to run growthbook-mcp?

You must provide a GrowthBook API key or personal access token via the GB_API_KEY environment variable. Optionally, you can set GB_API_URL for self‑hosted instances and GB_OAUTH_ISSUER if using OAuth.

Asked by Sanjay Gupta · Aug 16, 2025