About io.github.growthbook/growthbook-mcp
io.github.growthbook/growthbook-mcp is an MCP server published by growthbook in the Developer Tools category: mCP Server for interacting with GrowthBook.
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Install
claude mcp add io-github-growthbook-growthbook-mcp -- npx -y @growthbook/mcpnpx -y @growthbook/mcpThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (4)
growthbook_api_readAuthenticated GET passthrough to the GrowthBook API
Parameters not published.
growthbook_api_writeAuthenticated POST/PUT/PATCH/DELETE passthrough
Parameters not published.
growthbook_list_skillsList top-level skill entry points (name + description)
Parameters not published.
growthbook_read_skillReturn a listed skill or qualified child workflow (`feature-flags` or `feature-flags/references/flag-create`)
Parameters not published.
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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. |
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README copy captured when this server was indexed; it may lag the repository. The original is authoritative.