How to Connect ChatGPT to Your Calendar on Mac
Let ChatGPT read your calendar, create events, check availability and spot conflicts through Calendar.app on your Mac. Works with iCloud, Google and Exchange calendars — via a free MCP connector. No API keys, your calendar stays local.
Can ChatGPT See My Calendar?
With LMCP, ChatGPT can read your calendar, create and update events, and check availability directly through Calendar.app on your Mac. Ask “What’s on my calendar tomorrow?”, “Find a free hour on Thursday afternoon”, or “Schedule a 30-minute call with the design team Friday morning.”
No Google Calendar API keys, no OAuth. LMCP reads the calendars already in Calendar.app — iCloud, Google, Exchange, subscribed calendars — locally on your Mac.
What You Will Need
- macOS 12+ with Calendar.app set up
- ChatGPT on the web (Plus/Pro/Business/Enterprise/Edu) — custom connectors require a paid plan and Developer mode
- LMCP installed (free)
Connect ChatGPT to LMCP (about 5 minutes)
- Install LMCP, open the menu bar app → Settings → Connect, enter your email, click Connect, toggle Cloud Data Forwarding ON, and copy your Token.
- On chatgpt.com: Settings → Apps → Advanced settings → Developer mode, then Create app with URL
https://www.local-mcp.com/mcpand Authentication OAuth. - Click Connect → paste your token on the Authorize ChatGPT page → Authorize.
Full setup with screenshots: Connect ChatGPT to your Mac · visual walkthrough.
Try It Out
Start a new chat, enable LMCP via + → More → LMCP, then ask:
- “What’s on my calendar this week?”
- “Do I have any conflicts or double-bookings on Thursday?”
- “Find a free 30-minute slot Friday afternoon and create a call with the design team.”
- “Move my 2pm to 4pm and let me confirm first.”
For creating, updating, or deleting events, ChatGPT shows a preview and asks you to confirm first.
Which Calendars Work?
Any calendar in Calendar.app:
- iCloud calendars
- Google calendars (added to Calendar.app)
- Microsoft Exchange / Office 365
- Subscribed / holiday / shared calendars
Privacy: Your Calendar Stays on Your Mac
- LMCP reads Calendar.app through native macOS APIs — no Google/Microsoft API keys.
- With Cloud Data Forwarding on, requests route through an encrypted relay to your Mac and execute locally.
- No event data is stored, cached or logged by LMCP. GDPR/CCPA compliant by architecture.
Troubleshooting
ChatGPT can’t see my events
Grant LMCP Calendar access in System Settings > Privacy & Security > Calendars, and make sure Cloud Data Forwarding is ON in LMCP Settings → Connect.
The connector shows “No app actions available yet”
Normal — that settings panel doesn’t list tools. Enable LMCP in a chat via + → More → LMCP and it works.