How to Connect Multiple Google Calendars to Claude
Claude can see shared calendars on the Google account you connected. It cannot hold a second Google login on that same connector. Those are two different limits: one person may have work and personal Google identities, while a single identity may contain primary, team, family, and subscribed calendars. Carly connects the identities separately and preserves the calendar names, so Claude or Cowork can work across the whole set through one connection. Carly holds your Outlook calendars and every mailbox on both sides in the same place, so this setup covers the rest of what you own.
1. Add your Google calendars to Carly
- Sign in at carlyassistant.com.
- Open carlyassistant.com/integrations.
- Find Google Calendar, click Connect, and authorize the calendar.
- Click Connect again for the next one, and keep going for as many calendars as you want.
Carly calculates availability across Google Calendar and Outlook at the same time, while each event stays on its original calendar.
Carly connects to thousands of apps, so while you are on that page you can add your inboxes, files, CRM, and anything else you want Claude to reach through the same connector.
2. Add Carly to Claude
- Open Customize in the sidebar.
- Select Connectors.
- Click +, then Add custom connector.
- Paste
https://carlyassistant.com/mcp/. - Click Add and authorize your Carly account.
- In chat or in a Cowork task, open + → Connectors and enable Carly.
Anthropic documents this path in its remote MCP connector guide. On Team and Enterprise, an Owner adds the connector to the organization first. Free plans are limited to one custom connector.
First identify which kind of “multiple” you have
Anthropic’s Google Workspace connector help says Claude can access Calendar data for “the Google account you’ve connected.” It also says Claude can “view events and calendars, including shared calendars you have access to,” and can create, update, and delete events on that account.
| Your setup | What it means |
|---|---|
| Work and personal Google logins | Multiple Google accounts, each with its own authorization |
| Primary, team, and family calendars under one login | Multiple calendars inside one Google account |
| Calendar shared to your account | A separate calendar reached through your current identity |
| Subscribed ICS calendar | Usually read-only and owned elsewhere |
On the connected Google Calendar, Claude can:
- create, update, and delete events
- find mutual availability
- manage attendees
- accept, decline, or mark tentative
- set up recurring meetings
Claude Google Calendar next to Carly
| Need | Native Google Calendar connector | Carly |
|---|---|---|
| Read a connected Google account | Yes | Yes |
| Shared calendars under that account | Yes | Yes |
| Keep two Google identities connected | No | Yes |
| Compare work and personal availability | Not in one native connection | Yes |
| Create, update, or delete an event | Yes, on the connected account, with approval | Yes, with the calendar’s permissions |
Carly offers free Zapier-style workflows; AI agents start at $35/month.
Quick fixes
| Problem | Fix |
|---|---|
| A secondary calendar is missing | Name it explicitly; Claude’s native connector should see shared calendars on the connected account |
| Second Google account replaced the first | Keep each identity connected in Carly instead of switching the native connector |
| Carly is installed but unused | Enable it under + → Connectors for this chat or Cowork task |
| Team plan cannot add the URL | Ask the Claude Owner to add the custom connector |
| Event landed on the wrong calendar | Require both the full address and calendar name before approval |
Frequently asked questions
Can Claude connect two Google Calendar accounts?
Not natively. The Google connector is one identity. Shared calendars under that identity are supported. A second Google login requires Carly or a reconnect that drops the first account.
Can Claude read secondary Google Calendars?
Yes, on the connected account. Anthropic documents viewing events “including shared calendars you have access to.”
Can Claude create Google Calendar events?
Yes, on the connected account. Create, update, and delete are documented. Claude asks before acting.
Can Claude check work and personal Google Calendars in one chat?
Not with the native connector. Connect both identities to Carly, add Carly to Claude, and name the target account on every write.
Related: Claude + Google Calendar · How to manage multiple Google Calendars · Best AI assistants for Google Calendar · Multiple Gmail accounts in Claude Cowork · Carly’s Google Calendar integration
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