io.github.growthbook/growthbook-mcp

Official

MCP Server for interacting with GrowthBook

22 4 tools GitHub

No known CVEs

No license

Actively maintained

Last commit 10d ago

Works with most clients

Transport: http

4 tools · ~214 tok

Grade A · 0.1% of 200K ctx

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Analytics

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktophttp · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "io-github-growthbook-growthbook-mcp": {
      "command": "<see-readme>",
      "args": []
    }
  }
}

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Read me

What io.github.growthbook/growthbook-mcp does

With the GrowthBook MCP server, you can interact with GrowthBook right from your LLM client. See experiment details, add a feature flag, and more.

Test This Server

No automated test available for this server. Check the GitHub README for setup instructions.

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Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

70/100across 5 weighted dimensions

How we score →

0255075100

−30

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

No package registry to scan.

Inventory

Tools (4)

Click any tool to inspect its schema.

~214 tokens total

Community

Reviews

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How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.growthbook/growthbook-mcp safe to use?: io.github.growthbook/growthbook-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.github.growthbook/growthbook-mcp?: io.github.growthbook/growthbook-mcp can be installed by cloning its GitHub repository and following the setup instructions in the README.
What can io.github.growthbook/growthbook-mcp do?: io.github.growthbook/growthbook-mcp provides 4 tools: list_experiments, get_experiment, create_feature_flag, create_experiment. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.github.growthbook/growthbook-mcp?: io.github.growthbook/growthbook-mcp is compatible with claude-desktop, cursor, claude-code. It uses http transport.
Is io.github.growthbook/growthbook-mcp actively maintained?: io.github.growthbook/growthbook-mcp is actively maintained — last commit was 10 days ago. It has 22 GitHub stars.

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Community

Discussion

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Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Setup

Environment Variables Use the following env variables to configure the MCP server.

Variable Name

Status

Description

GB_API_KEY

Required

A GrowthBook API key or PAT. When using a PAT, MCP server capabilities are limited by its permissions. E.g., if the user can't create an experiment in the app, they also won't be able to create one with the MCP server.

GB_EMAIL

Required

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

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.

GB_HTTP_HEADER_*

Optional

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 (underscores become hyphens). Examples: GB_HTTP_HEADER_X_TENANT_ID=abc123 becomes X-Tenant-ID: abc123, GB_HTTP_HEADER_CF_ACCESS_TOKEN=<token> becomes Cf-Access-Token: <token>. Multiple custom headers can be configured.

Add the MCP server to your AI tool of choice. See the official docs for complete a complete guide.

Frequently Asked Questions

Is io.github.growthbook/growthbook-mcp safe to use?

io.github.growthbook/growthbook-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install io.github.growthbook/growthbook-mcp?

io.github.growthbook/growthbook-mcp can be installed by cloning its GitHub repository and following the setup instructions in the README.

What can io.github.growthbook/growthbook-mcp do?

io.github.growthbook/growthbook-mcp provides 4 tools: list_experiments, get_experiment, create_feature_flag, create_experiment. See the full tools list on the server page for descriptions and parameters.

What AI clients work with io.github.growthbook/growthbook-mcp?

io.github.growthbook/growthbook-mcp is compatible with claude-desktop, cursor, claude-code. It uses http transport.

Is io.github.growthbook/growthbook-mcp actively maintained?

io.github.growthbook/growthbook-mcp is actively maintained — last commit was 10 days ago. It has 22 GitHub stars.

GrowthBook MCP Server

With the GrowthBook MCP server, you can interact with GrowthBook right from your LLM client. See experiment details, add a feature flag, and more.

Setup

Environment Variables Use the following env variables to configure the MCP server.

Variable Name	Status	Description
GB_API_KEY	Required	A GrowthBook API key or PAT. When using a PAT, MCP server capabilities are limited by its permissions. E.g., if the user can't create an experiment in the app, they also won't be able to create one with the MCP server.
GB_EMAIL	Required	Your email address used with GrowthBook. Used when creating feature flags and experiments.
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`.
GB_HTTP_HEADER_*	Optional	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 (underscores become hyphens). Examples: `GB_HTTP_HEADER_X_TENANT_ID=abc123` becomes `X-Tenant-ID: abc123`, `GB_HTTP_HEADER_CF_ACCESS_TOKEN=<token>` becomes `Cf-Access-Token: <token>`. Multiple custom headers can be configured.

Add the MCP server to your AI tool of choice. See the official docs for complete a complete guide.