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MCP Server for interacting with GrowthBook
Security Report
10.0
Low Risk10.0Low RiskValid 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.
What You'll Need
Set these up before or after installing:
A GrowthBook API key or PAT.
Environment variable: GB_API_KEY
Your email address used with GrowthBook. Used when creating feature flags and experiments.
Environment variable: GB_EMAIL
Your GrowthBook API URL. Defaults to `https://api.growthbook.io`.
Environment variable: GB_API_URL
Your GrowthBook app URL Defaults to `https://app.growthbook.io`.
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.
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"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
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.
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