How to connect google calendar to Callin AI Voice Agents.

Common issue with Google Calendar when creating your agent (and how to fix it step by step)

I guess many of you have run into the same situation as me when starting with Callin.io. You create your first agent, enable the option to schedule appointments with Google Calendar, and suddenly you see a yellow warning telling you that something is not set up correctly. At first, it looks like a platform error, but it’s not. The truth is: one step is missing.

The key is that the Google Calendar integration is not activated directly from the agent, but from the Actions section in the dashboard. Before creating the agent, you need to go to Actions, connect your Google Calendar account, and grant the necessary permissions. Only after doing this can you select that integration when building your agent.

Another important detail that I discovered later: it’s not enough to just connect Google Calendar. You also need to fill in the Appointment section inside Actions. If you skip this step, the agent will never be able to schedule appointments, even if the calendar connection looks fine.

So, the process is:

1. Go to Actions.

2. Connect your Google Calendar account and select the correct calendar.

3. Configure the Appointment section (this defines how the agent books meetings).

4. Now, when you create your agent, you can select that action and it will work without errors.

Since I started doing it in this order, I never got the yellow warning again. As a personal tip, I recommend creating a separate calendar just for the agent, to avoid mixing it with your personal or team meetings.

Hopefully, this saves some time for anyone who’s just starting and facing the same issue.