Connect ChatGPT to Your Mac Calendar — Events & Scheduling (Free)

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 Your Mac

Connect ChatGPT to your Mac

chatgpt.com → Settings → Apps

Adding a custom connector needs Developer mode, available on ChatGPT Plus, Pro, Business, Enterprise, and Edu (not the free plan). ChatGPT flags it high-risk because a custom connector can act on your data.

1
Install LMCP on your Mac
Download LMCP from local-mcp.com and run the installer — it installs Local MCP to Applications and auto-configures your AI clients in ~30 seconds.
2
Turn on the Cloud Relay
Open the LMCP menu bar app → Settings → Connect and toggle Cloud Data Forwarding ON (off by default for privacy). Click Copy next to Token — you paste it once on the authorize page.
3
Turn on Developer mode (one-time)
On chatgpt.com, open Settings → Apps, then turn on Developer mode — it now lives on its own page under Security & sign-in (linked from the bottom of Apps). It’s flagged high-risk because it lets you add custom connectors.
4
Create the LMCP connector
Back in Settings → Apps, add a new connector — Name: LMCP, MCP Server URL: https://www.local-mcp.com/mcp, Authentication: OAuth (leave client ID/secret empty — we auto-register). Confirm you trust it and Create.
5
Approve with your token
ChatGPT opens an Authorize page on www.local-mcp.com. Paste the Token you copied from the LMCP menu bar and click Authorize. The page closes and the connector shows Connected with the full tool catalog.
6
Enable it in a chat
Start a new conversation and enable the LMCP connector from the composer’s tools menu (+). Then ask: “List my email accounts” or “What meetings do I have today?”

Steps verified 2026-07-14. 100% local · you confirm anything it sends · free.

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.

Frequently Asked Questions

Can ChatGPT create calendar events on my Mac?

Yes. ChatGPT can see your schedule, create and reschedule events, check availability and find conflicts — across your iCloud, Google and Exchange calendars in Calendar.app.

Does it need Google or Microsoft API keys?

No. LMCP reads your calendar through macOS EventKit locally — no Google or Microsoft API keys, no OAuth for the calendar data.

Which calendars does it work with?

Every calendar in Calendar.app — iCloud, Google and Exchange — all at once.

How to Connect ChatGPT to Your Calendar on Mac