Growthbook MCP

A thin MCP server for GrowthBook with four tools: 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. It runs locally over stdio via the published package.

People connecting API integration tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-08-17 · ★ 23 · #11 OF 250 MAINTAINED API INTEGRATION · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install Growthbook MCP

before you install - you'll need

Set GB_SKILLS_ENABLED, OAUTH_AS_ENABLED, GB_MCP_TRANSPORT before connecting. GB_API_KEY, GB_API_URL are optional or environment-specific per the README.

Claude Code

claude mcp add growthbook-growthbook-mcp -- npx -y @growthbook/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "growthbook-growthbook-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@growthbook/mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package @growthbook/mcp - published under the repo owner's npm scope (@growthbook)

registry namespace io.github.growthbook is GitHub-verified and matches the repo owner

03 · What Growthbook MCP can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v2.1.0 · 2026-08-11

Split API tools into read vs write (2.1.0)

v2.0.0 · 2026-07-30

Initial release on npm · Add step to install pnpm · Add step to install dependencies · fix package.json issue and specify access public for npm publish · Update readme with package · add MCP server badge · Add create…

04 · Who maintains Growthbook MCP

growthbook-mcp is maintained by growthbook. It's the only MCP server we track from this author; the repo dates to May 2025.

05 · Facts

repository: github.com/growthbook/growthbook-mcp
category: API integration - ranked #11 of 250 actively-maintained API integration servers as of 2026-08-25.
release cadence: 2 releases in the last 90 days (latest 2026-08-11)
registry: io.github.growthbook/growthbook-mcp (active, first published 2025-12-30 · 11 versions)
packages: npm:@growthbook/mcp

06 · Growthbook MCP FAQ

What is Growthbook MCP?

Is Growthbook MCP still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-17 and it shipped 2 releases in the last 90 days. We re-verify nightly.

How do I install Growthbook MCP?

Run `npx -y @growthbook/mcp`. The README documents 5 environment variables (GB_API_KEY, GB_API_URL, GB_SKILLS_ENABLED…) to set first. Set GB_SKILLS_ENABLED, OAUTH_AS_ENABLED, GB_MCP_TRANSPORT before connecting. GB_API_KEY, GB_API_URL are optional or environment-specific per the README. You can also paste the ready-made client config above.

Does Growthbook MCP run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Growthbook MCP

Alternatives to Growthbook MCP

Maintained API integration servers if Growthbook MCP isn't the fit.

More API integration MCP servers · Gud API MCP · Apple Ads · Computer-Use Agents API · Admin MCP · Himalayas Remote Jobs

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