# GrowthBook MCP

> GrowthBook's MCP server: your agent creates and cleans up feature flags, designs and analyzes A/B tests, and charts product data.

The GrowthBook MCP server connects your agent to GrowthBook, the open-source platform for feature flags, experimentation and product analytics. It's a thin bridge: it loads GrowthBook's own Agent Skills, step-by-step workflows with guardrails, and makes authenticated calls to the GrowthBook REST API.

What you can do with it
- Create, target, ramp, review, publish, search and clean up feature flags
- Find stale flags that are safe to remove
- Brainstorm, design, launch, analyze and stop A/B tests
- Search the metric catalog, chart product data and build dashboards

How it connects
It runs on your machine with npx @growthbook/mcp (Node.js 18 or later). Set GB_API_KEY to a GrowthBook personal access token or API key. GrowthBook recommends a personal access token, so changes are attributed to you and limited to your permissions. For a self-hosted GrowthBook, also set GB_API_URL to your API's address. On GrowthBook Cloud you can instead connect to GrowthBook's hosted server at https://mcp.growthbook.io/mcp and sign in with OAuth.

Its four tools
- growthbook_list_skills and growthbook_read_skill load the workflow for your task
- growthbook_api_read makes read-only GET calls to the GrowthBook API
- growthbook_api_write makes POST, PUT, PATCH and DELETE calls

Good to know
- The skills keep GrowthBook's guardrails, such as draft, review and publish, and two-step deletes.
- Give the key the Read only preset to block every write, or Human-in-the-Loop (Enterprise) so risky changes wait for a person to confirm them in GrowthBook.
- Set GB_SKILLS_ENABLED to false to expose only the two API tools when you bring your own workflows.

- Type: Plugin
- Made by: growthbook
- Category: Developer tools
- Formats: Local MCP
- Version: 2.2.0
- Website: https://docs.growthbook.io/integrations/mcp
- Source: https://github.com/growthbook/growthbook-mcp
- Page: https://pluginboard.ai/plugins/growthbook-mcp

## Works with

- Claude
- GitHub Copilot
- Cursor
- Claude Code
- Codex
- Antigravity
- Gemini CLI
- OpenClaw
- OpenCode
- Hermes Agent

## Install

You'll need:

- `GB_API_KEY` (optional): A GrowthBook API key or personal access token.
- `GB_API_URL` (optional): Your GrowthBook API URL. Defaults to https://api.growthbook.io.
- `GB_SKILLS_ENABLED` (optional): Set to false to disable bundled skill tools (growthbook_list_skills, growthbook_read_skill). Defaults to true.

Replace each `<NAME>` placeholder with your own value.

### Claude

Add to claude_desktop_config.json:

```json
{
  "mcpServers": {
    "growthbook-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@growthbook/mcp@2.2.0"
      ]
    }
  }
}
```

### GitHub Copilot

Add to VS Code: vscode:mcp/install?%7B%22name%22%3A%22growthbook-mcp%22%2C%22command%22%3A%22npx%22%2C%22args%22%3A%5B%22-y%22%2C%22%40growthbook%2Fmcp%402.2.0%22%5D%7D

Run in your terminal:

```shell
code --add-mcp '{"name":"growthbook-mcp","command":"npx","args":["-y","@growthbook/mcp@2.2.0"]}'
```

Copilot CLI:

```shell
copilot mcp add growthbook-mcp -- npx -y @growthbook/mcp@2.2.0
```

### Cursor

Add to Cursor: cursor://anysphere.cursor-deeplink/mcp/install?name=growthbook-mcp&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBncm93dGhib29rL21jcEAyLjIuMCJdfQ%3D%3D

Add to .cursor/mcp.json:

```json
{
  "mcpServers": {
    "growthbook-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@growthbook/mcp@2.2.0"
      ]
    }
  }
}
```

### Claude Code

Run in your terminal:

```shell
claude mcp add growthbook-mcp -- npx -y @growthbook/mcp@2.2.0
```

### Codex

Run in your terminal:

```shell
codex mcp add growthbook-mcp -- npx -y @growthbook/mcp@2.2.0
```

### Antigravity

Add to ~/.gemini/config/mcp_config.json:

```json
{
  "mcpServers": {
    "growthbook-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@growthbook/mcp@2.2.0"
      ]
    }
  }
}
```

### Gemini CLI

Run in your terminal:

```shell
gemini mcp add growthbook-mcp npx -y @growthbook/mcp@2.2.0
```

### OpenClaw

In a terminal: Run openclaw mcp add growthbook-mcp --command npx, with --arg before each argument (-y @growthbook/mcp@2.2.0) and --env NAME=value for each variable it needs.

### OpenCode

Run in your terminal:

```shell
opencode mcp add growthbook-mcp -- npx -y @growthbook/mcp@2.2.0
```

### Hermes Agent

Add to ~/.hermes/config.yaml:

```json
{
  "mcp_servers": {
    "growthbook-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@growthbook/mcp@2.2.0"
      ]
    }
  }
}
```

---
From Pluginboard (https://pluginboard.ai).