Growthbook Mcp
Connects Claude directly to your GrowthBook account for managing feature flags and experiments without leaving your chat. You can view experiment details, create new feature flags, and perform other operations using your GrowthBook API key or personal access token. Requires your API credentials and email to get started, with optional configuration for self-hosted instances. Permissions mirror what your token allows in the GrowthBook app itself, so if you can't create an experiment in the web UI, you won't be able to here either. Useful when you're deep in conversation about A/B tests or feature rollouts and want to act on them immediately rather than context switching to the browser.
- GitHub stars
- 24
- tools
- 4
- transport
- STDIO
- env vars
- 4
- last updated
- Oct 6, 2026
Tools
4 toolsPublic tool metadata for what this MCP can expose to an agent.
growthbook_list_skillsList top-level skill entry points (name + description)
List top-level skill entry points (name + description)
No parameter schema in public metadata yet.
growthbook_read_skillReturn a listed skill or qualified child workflow (`feature-flags` or `feature-flags/references/flag-create`)
Return a listed skill or qualified child workflow (`feature-flags` or `feature-flags/references/flag-create`)
No parameter schema in public metadata yet.
growthbook_api_readAuthenticated GET passthrough to the GrowthBook API
Authenticated GET passthrough to the GrowthBook API
No parameter schema in public metadata yet.
growthbook_api_writeAuthenticated POST/PUT/PATCH/DELETE passthrough
Authenticated POST/PUT/PATCH/DELETE passthrough
No parameter schema in public metadata yet.
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GB_API_KEYA GrowthBook API key or personal access token.
GB_API_URLYour GrowthBook API URL. Defaults to https://api.growthbook.io.
GB_SKILLS_ENABLEDSet to false to disable bundled skill tools (growthbook_list_skills, growthbook_read_skill). Defaults to true.
GB_HTTP_HEADER_*Custom HTTP headers via GB_HTTP_HEADER_<NAME> (e.g. GB_HTTP_HEADER_CF_ACCESS_TOKEN).
Readme
GrowthBook MCP Thin
A thin MCP server for GrowthBook with four tools:
| Tool | Purpose |
|---|---|
growthbook_list_skills | List top-level skill entry points (name + description) |
growthbook_read_skill | Return a listed skill or qualified child workflow (feature-flags or feature-flags/references/flag-create) |
growthbook_api_read | Authenticated GET passthrough to the GrowthBook API |
growthbook_api_write | Authenticated POST/PUT/PATCH/DELETE passthrough |
Competence lives in the skills repo and is bundled at build time. Capability is split into read vs write API tools (no per-endpoint formatters) so clients can honor readOnlyHint / destructiveHint correctly.
Tools are prefixed with growthbook_ so they stay unambiguous when a client has multiple MCP servers loaded.
Cursor plugin
Details
- Repository
- github.com/growthbook/growthbook-mcp
- Package
@growthbook/mcp- Transport
- STDIO
- Registry
- MCP registry, active