# Cocal Google Calendar MCP (@cocal/google-calendar-mcp) - AgentBreakWatch Reference

> TL;DR Verdict: Cocal Google Calendar MCP (`@cocal/google-calendar-mcp`) is currently at v2.7.0 on NPM (published 2026-09-28), with a 90-day Stability Score of 86/100 (B+) and MEDIUM schema drift risk across 2 releases in the last 90 days. Built on MCP SDK (^1.30.1); recent release v2.7.0 (up from v2.6.3) updates Productivity & Docs MCP tool schemas and transport handling (2 releases in last 90d). Pin exact version v2.7.0 in .mcp.json to avoid silent parameter drift.

## Live Telemetry Metadata
- Canonical Page: https://agentbreakwatch.vercel.app/p/cocal-google-calendar-mcp
- Category Hub: https://agentbreakwatch.vercel.app/c/productivity-docs (Productivity, Notion, Slack, Jira & Docs MCP Servers)
- Package Name: `@cocal/google-calendar-mcp`
- Registry: NPM (https://www.npmjs.com/package/@cocal/google-calendar-mcp)
- GitHub Repository: https://github.com/nspady/google-calendar-mcp
- Vendor: Cocal
- Latest Live Version: v2.7.0
- Published Date: 2026-09-28T21:55:35.939Z
- 90-Day Release Count: 2
- Direct Dependencies: 6
- License: MIT
- Stability Score: 86/100 (Grade B+)
- Schema Drift Risk: MEDIUM
- Recommended Exact Pin Command: `npx -y @cocal/google-calendar-mcp@2.7.0`
- Watched Symbols / MCP Tools: google-calendar-mcp, tools/list, tools/call
- Snapshot Timestamp: 2026-10-24T12:11:27.697Z

## Breaking Change & Schema Drift Summary
Built on MCP SDK (^1.30.1); recent release v2.7.0 (up from v2.6.3) updates Productivity & Docs MCP tool schemas and transport handling (2 releases in last 90d). Pin exact version v2.7.0 in .mcp.json to avoid silent parameter drift.

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

## Migration Diff: After (Verified v2.7.0 Pattern)
```
"cocal-google-calendar-mcp": {
  "command": "npx",
  "args": ["-y", "@cocal/google-calendar-mcp@2.7.0"]
}
```

## Recent Verified Releases
- v2.7.0 (published 2026-09-28) [LATEST]
- v2.6.3 (published 2026-09-02)
- v2.6.2 (published 2026-06-01)
- v2.6.1 (published 2026-03-02)
- v2.6.0 (published 2026-03-02)
- v2.4.1 (published 2026-01-18)