GrowthBook

official

Create and read feature flags, review experiments, generate flag types, search docs, and interact with GrowthBook's feature flagging and experimentation platform.

GitHub
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What can you do with Growth Book MCP?

  • View experiment details — Ask for a specific experiment’s configuration, status, and results using get_experiment.
  • List all experiments — Retrieve a paginated list of experiments across your organization with list_experiments.
  • Create a feature flag — Add a new feature flag directly from your AI client with create_feature_flag.
  • Manage feature flags — List, get, update, or delete feature flags using list_features, get_feature, update_feature, and delete_feature.
  • Create an experiment — Set up a new experiment in GrowthBook via create_experiment.
  • Update an experiment — Modify an existing experiment’s settings using update_experiment.

Documentation

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.

GrowthBook Server MCP server

Setup

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

Variable NameStatusDescription
GB_API_KEYRequiredA 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_EMAILRequiredYour email address used with GrowthBook. Used when creating feature flags and experiments.
GB_API_URLOptionalYour GrowthBook API URL. Defaults to https://api.growthbook.io.
GB_APP_ORIGINOptionalYour GrowthBook app URL Defaults to https://app.growthbook.io.
GB_HTTP_HEADER_*OptionalCustom 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.