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MCP verified MIT Self-run

Growthbook Mcp

mcp-growthbook-growthbook-mcp · by growthbook

Official GrowthBook MCP server for creating flags, getting experiments, and more.

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Install

$ agentstack add mcp-growthbook-growthbook-mcp

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Passed review? Show it. Paste this badge into your README, it links to the public security report.

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[![AgentStack Verified](https://agentstack.voostack.com/badges/verified.svg)](https://agentstack.voostack.com/security/report/mcp-growthbook-growthbook-mcp)

Reliability & compatibility

✓ Security review passed
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Declared compatibility

Claude CodeClaude DesktopCursorWindsurf

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

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About

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 | | ------------- | -------- | ----------------------------------------------------------------- | | GBAPIKEY | 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. | | GBEMAIL | Required | Your email address used with GrowthBook. Used when creating feature flags and experiments.| | GBAPIURL | Optional | Your GrowthBook API URL. Defaults to https://api.growthbook.io. | | GBAPPORIGIN | Optional | Your GrowthBook app URL Defaults to https://app.growthbook.io. | | GBHTTPHEADER* | Optional | Custom HTTP headers to include in all GrowthBook API requests. Use the pattern GB_HTTP_HEADER_ where ` is converted to proper HTTP header format (underscores become hyphens). Examples: GBHTTPHEADERXTENANTID=abc123 becomes X-Tenant-ID: abc123, GBHTTPHEADERCFACCESSTOKEN= becomes Cf-Access-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.

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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