# Growthbook MCP (@growthbook/mcp) - AgentBreakWatch Reference

> TL;DR Verdict: Growthbook MCP (`@growthbook/mcp`) is currently at v2.2.0 on NPM (published 2026-10-06), with a 90-day Stability Score of 86/100 (B+) and MEDIUM schema drift risk across 3 releases in the last 90 days. Built on MCP SDK (^1.27.1); recent release v2.2.0 (up from v2.1.0) updates Developer Tools MCP tool schemas and transport handling (3 releases in last 90d). Pin exact version v2.2.0 in .mcp.json to avoid silent parameter drift.

## Live Telemetry Metadata
- Canonical Page: https://agentbreakwatch.vercel.app/p/growthbook-mcp
- Category Hub: https://agentbreakwatch.vercel.app/c/mcp-bridges-devtools (MCP Bridges, Transports, Inspectors & Developer Tools)
- Package Name: `@growthbook/mcp`
- Registry: NPM (https://www.npmjs.com/package/@growthbook/mcp)
- GitHub Repository: https://github.com/growthbook/growthbook-mcp
- Vendor: Growthbook
- Latest Live Version: v2.2.0
- Published Date: 2026-10-06T16:51:55.345Z
- 90-Day Release Count: 3
- Direct Dependencies: 3
- License: MIT
- Stability Score: 86/100 (Grade B+)
- Schema Drift Risk: MEDIUM
- Recommended Exact Pin Command: `npx -y @growthbook/mcp@2.2.0`
- Watched Symbols / MCP Tools: mcp, tools/list, tools/call
- Snapshot Timestamp: 2026-10-24T12:11:27.697Z

## Breaking Change & Schema Drift Summary
Built on MCP SDK (^1.27.1); recent release v2.2.0 (up from v2.1.0) updates Developer Tools MCP tool schemas and transport handling (3 releases in last 90d). Pin exact version v2.2.0 in .mcp.json to avoid silent parameter drift.

## Migration Diff: Before (Deprecated / Unpinned Pattern)
```
"growthbook-mcp": {
  "command": "npx",
  "args": ["-y", "@growthbook/mcp@latest"]
}
```

## Migration Diff: After (Verified v2.2.0 Pattern)
```
"growthbook-mcp": {
  "command": "npx",
  "args": ["-y", "@growthbook/mcp@2.2.0"]
}
```

## Recent Verified Releases
- v2.2.0 (published 2026-10-06) [LATEST]
- v2.1.0 (published 2026-08-11)
- v2.0.0 (published 2026-07-30)
- v1.8.1 (published 2026-03-09)
- v1.8.0 (published 2026-03-09)
- v1.7.0 (published 2026-03-06)