TriggerGoogle CalendarReal-timeUpdated May 2026
How do I trigger when a Google Calendar event begins?
Short answer: Drop the "Google Calendar → Event Started" trigger on your workflow canvas, add filters if you want them, and publish. It fires within seconds of the event in Google Calendar, not on a polling schedule.
Anatomy
What this trigger looks like in a workflow.
Drop it on the canvas. Configure a couple of fields. Publish.
In the builder
Trigger
Event Started
When the matching event happens
when calendar event startsgoogle calendar event startedmeeting startedon event startwatch for event startwhen meeting beginscalendar event beginning
What this trigger returns
for the curiousYou don’t need to read this. Tiny Command auto-maps every field into the visual picker so downstream nodes can pull values by clicking. We show it here for power users who want to know what’s on the wire.
{"items": [{"id": "abc123def456","end": {"dateTime": "2026-05-08T15:30:00-07:00","timeZone": "America/Los_Angeles"},"start": {"dateTime": "2026-05-08T15:00:00-07:00","timeZone": "America/Los_Angeles"},"status": "confirmed","creator": {"email": "owner@example.com"},"iCalUID": "abc123def456@google.com","summary": "Team Standup","htmlLink": "https://www.google.com/calendar/event?eid=abc","attendees": [{"email": "alice@example.com","responseStatus": "accepted"}],"eventType": "default","organizer": {"self": true,"email": "owner@example.com"},"description": "Daily sync","hangoutLink": "https://meet.google.com/abc-defg-hij"}]}
Output shape
Fields available to downstream nodes.
Every field below can be referenced by name in any action or filter that comes after this trigger.
| Field | Type | Example |
|---|---|---|
| items | array | [{"id":"abc123def456","end":{"dateTime":"2026-05-08T15:30:00 |
Pairs with
Drop these actions after Event Started.
FAQ
Questions about Event Started.
How does the Event Started trigger work in Google Calendar?
Fires when an event in the selected Google Calendar begins. Polls for events whose start time falls inside the most recent polling window. Use to set status, mute notifications, or join a Zoom automatically.
Is the Event Started trigger real-time?
Yes. Event Started uses webhooks or push subscriptions, not polling. Your workflow fires within seconds of the event happening in Google Calendar.
What data does Event Started return?
The full event payload from Google Calendar. The output shape table on this page lists every field, its type, and an example value so you can map fields into downstream nodes.
Can I filter Event Started so only some events start a workflow?
Yes. Add a Filter node right after the trigger and match on any field, whether that's subject, sender, status, or anything else in the payload. Workflows only continue when the filter passes.
Do I need Google Calendar admin permissions to use Event Started?
For most Google Calendar accounts a standard user can authorize the trigger. Some Google Calendar plans require an admin to enable third-party webhooks. Check Google Calendar's docs if the trigger fails to register.
More triggers
Other Google Calendar triggers.
Trigger
Event Cancelled
Fires when an event is cancelled or deleted from the selected Google Calendar. Use to release Zoom resources, update CRM activity, or notify attendees via another channel.
TriggerNew Event
Fires when a new event is added to the selected Google Calendar. Used to mirror booked meetings into CRM, send prep, or auto-create Zoom links.
TriggerEvent Ended
Fires when an event in the selected Google Calendar ends. Polls for events whose end time falls inside the most recent polling window. Use to follow up after a meeting or to kick off a recording/summary pipeline.
TriggerEvent Updated
Fires when an existing event is modified (rescheduled, retitled, attendees added/removed, etc.) in the selected Google Calendar. Combine with field filters to react only to specific changes.
Build a workflow on this trigger.
One trigger. 7+ downstream actions. Zero glue.
