TriggerCal.comReal-timeUpdated June 2026

When does Cal.com fire on rescheduling?

Short answer: Drop the "Cal.com → Booking Rescheduled" trigger on your workflow canvas, add filters if you want them, and publish. It fires within seconds of the event in Cal.com, not on a polling schedule.

Use this trigger All 3 Cal.com triggers

Anatomy

What this trigger looks like in a workflow.

Drop it on the canvas. Configure a couple of fields. Publish.

In the builder

Trigger

Booking Rescheduled

When the matching event happens

watch for booking rescheduledwhen a booking is rescheduledon booking rescheduledwhen booking reschedulednew booking rescheduled

What this trigger returns

for the curious

You 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.

{
  "event": "BOOKING_RESCHEDULED",
  "start": "2026-04-15T14:00:00Z",
  "title": "Meeting with John",
  "attendee": "john@example.com"
}

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
event	string	"BOOKING_RESCHEDULED"
start	string	"2026-04-15T14:00:00Z"
title	string	"Meeting with John"
attendee	string	"john@example.com"

Pairs with

Drop these actions after Booking Rescheduled.

Add Labels to Message

Gmail · Email

Add Reaction

Slack · Communication

Add Sheet Tab

Google Sheets · Spreadsheets & Databases

Create Company

HubSpot · CRM & Sales

FAQ

Questions about Booking Rescheduled.

How does the Booking Rescheduled trigger work in Cal.com?

Fires when a booking moves to a different time. Payload includes both old and new times. Useful for cascading updates — adjust downstream reminders, update calendar holds, sync the new time to client CRM record.

Is the Booking Rescheduled trigger real-time?

Yes. Booking Rescheduled uses webhooks or push subscriptions, not polling. Your workflow fires within seconds of the event happening in Cal.com.

What data does Booking Rescheduled return?

The full event payload from Cal.com. 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 Booking Rescheduled 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 Cal.com admin permissions to use Booking Rescheduled?

For most Cal.com accounts a standard user can authorize the trigger. Some Cal.com plans require an admin to enable third-party webhooks. Check Cal.com's docs if the trigger fails to register.