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 → Security and login → Developer mode

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 web access and copy your Connection URL
Click the LMCP icon in your menu bar and find Your web AI · Cloud Relay. Turn web access ON (it is off by default for privacy), then open your assistant’s panel and click Copy URL.
That URL already contains your personal token — it looks like . Every step below that says “the URL you copied” means this one. Treat it like a password: anyone holding it can reach your Mac, and you can rotate it any time from the LMCP menu, which invalidates the old one.
3
Turn on Developer mode (one-time)
Use a desktop browser at chatgpt.com — connectors can’t be added from the mobile or desktop apps. Open Settings → “Security and login” and turn on Developer mode: it’s the one-time prerequisite, and the custom-connector section (labeled “Connectors”, “Apps” or “Apps & Connectors” depending on rollout) only appears after it’s on — that’s why there may be no “Apps” yet.
Still don’t see it? Fully reload chatgpt.com after toggling — Developer mode also has to stay on to use the connector. On Business/Enterprise/Edu a workspace admin must enable connectors first.
4
Create the LMCP connector
With Developer mode on, go to chatgpt.com/plugins and click the ＋ at the top right — that is where the button lives, not on the Settings page (Settings → Plugins → “Browse plugins” takes you to the same screen). Fill in Name: and, in Server URL, paste the URL you copied from the LMCP menu bar — the tokenized one, exactly as copied. Authentication stays on “OAuth” — that is already the default, and the client ID/secret stay empty because we auto-register. Tick I understand and want to continue and click Create.
5
Sign in and approve on your Mac
Create only registers the connector — it still reads “No app actions available yet”. Click Sign in with LMCP: ChatGPT opens an Authorize page on , and a dialog appears on your Mac. Click Approve there and the tool catalog loads.
If no dialog shows up, or the page says LMCP isn’t running, the approval simply expired — it only lasts 5 minutes. Click the button again; nothing needs reinstalling. (Pasting your token is the fallback for a different device or a browser that blocks the app-open.)
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 2026-08-08. 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