MCP Comparison · 2026
Google Calendar vs Microsoft 365 MCP Server
Comparing Google Calendar and Microsoft 365 as MCP servers? Google Calendar (manage calendar events) is best when scheduling assistants. Microsoft 365 (microsoft 365 access) is best when outlook inbox triage from an agent. Both run as Model Context Protocol servers and can coexist in the same client. Updated 2026.
Side-by-side specs
Pulled from each MCP's verified fact sheet.
| Google Calendar | Microsoft 365 | |
|---|---|---|
| Primary function | Manage Calendar Events | Microsoft 365 access |
| Maintainer | Google (official remote) / Community nspady (self-host) | Softeria |
| Pricing | Free | Open source |
| Setup complexity | Medium · ~10 min | Medium · ~10 min |
| Transport | Streamable HTTP, stdio | stdio, Streamable HTTP |
| Auth model | OAuth 2.1 | OAuth 2.1 |
| License | MIT | MIT |
| Language | TypeScript | TypeScript |
| Latest version | latest | — |
| Compatible clients | Claude, Cursor, Any MCP-compatible client, Google accounts | Claude, Claude Code, Cursor, VS Code, Any MCP-compatible client |
| Last verified | 2026-06-25 | 2026-08-23 |
Which one should you pick?
Decision rubric drawn from each MCP's documented strengths.
Choose Google Calendar
- Scheduling assistants
- Find-a-slot flows
- Meeting-prep agents
Choose Microsoft 365
- Outlook inbox triage from an agent
- Free-busy lookup across Microsoft 365 calendars
- Reading Teams threads for context
Pick something else if…
- Bulk calendar exports
- Google Workspace stacks
Feature breakdown
Key capabilities each server ships out of the box.
Google Calendar
- Official Google remote MCP (calendarmcp.googleapis.com) with 8 tools
- Self-hostable community server (nspady, MIT)
- OAuth-scoped calendars
- Free-busy and suggest-time queries
- Event CRUD with attendees
- Multiple-calendar support
Microsoft 365
- Outlook mail and calendar via Microsoft Graph
- Teams, OneDrive, Excel, OneNote, To Do and contacts
- MSAL device-code authentication
- Read-only mode for safe first runs
- Tool filtering and presets to shrink the tool surface
- Global and 21Vianet (China) cloud endpoints
Install snippets
Open the detail page for ready-to-paste config for every major client.
FAQ
Google Calendar vs Microsoft 365: which MCP server should I use?
Pick Google Calendar when scheduling assistants. Pick Microsoft 365 when outlook inbox triage from an agent. Google Calendar is built for manage calendar events, while Microsoft 365 focuses on microsoft 365 access.
Can I run both Google Calendar and Microsoft 365 together?
Yes. MCP clients run each server as a separate process and surface every server's tools simultaneously, so you can install both and let your agent decide which to call. Be deliberate with auth scopes when stacking servers.
How fresh is this comparison?
Updated for 2026. Google Calendar's last verification: 2026-06-25. Microsoft 365's last verification: 2026-08-23. We refresh detail-page facts on every catalog rebuild.
More Google Calendar comparisons
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