On booking reassigned

calcom.onBookingReassigned subscribes when a round-robin booking is reassigned.

automations/on-booking-reassigned.automation.ts

import { automation, markSignificant } from "automate.ax"
import { calcom } from "automate.ax/calcom"

export default automation("On booking reassigned", () => {
  const event = calcom.onBookingReassigned()
  markSignificant(event)
})

Scope

Omit scope for personal bookings. To watch one team-owned Collective or Round Robin event type, pass { type: "team", teamId, eventTypeId }. Team scope requires a Cal.com Teams plan or higher and an API key owned by a team admin or owner.

Event

Field	Type	Required
`createdAt`	`string (date-time)`	Yes
`payload`	`object`	Yes
`payload.additionalNotes`	`string`	No
`payload.attendees`	`object[]`	Yes
`payload.attendees[].email`	`string (email)`	Yes
`payload.attendees[].id`	`integer`	No
`payload.attendees[].language`	`object`	Yes
`payload.attendees[].language.locale`	`string`	Yes
`payload.attendees[].name`	`string`	Yes
`payload.attendees[].phoneNumber`	`string \| null`	No
`payload.attendees[].timeZone`	`string`	Yes
`payload.attendees[].username`	`string \| null`	No
`payload.attendees[].utcOffset`	`number`	No
`payload.bookingId`	`integer`	Yes
`payload.customInputs`	`object \| null`	No
`payload.description`	`string`	Yes
`payload.endTime`	`string`	Yes
`payload.eventDescription`	`string \| null`	No
`payload.eventTitle`	`string`	No
`payload.eventTypeId`	`integer \| null`	No
`payload.location`	`JSON value`	No
`payload.metadata`	`object`	No
`payload.organizer`	`object`	Yes
`payload.organizer.email`	`string (email)`	Yes
`payload.organizer.id`	`integer`	No
`payload.organizer.language`	`object`	Yes
`payload.organizer.language.locale`	`string`	Yes
`payload.organizer.name`	`string`	Yes
`payload.organizer.phoneNumber`	`string \| null`	No
`payload.organizer.timeZone`	`string`	Yes
`payload.organizer.username`	`string \| null`	No
`payload.organizer.utcOffset`	`number`	No
`payload.responses`	`object \| null`	No
`payload.startTime`	`string`	Yes
`payload.status`	`string`	Yes
`payload.title`	`string`	Yes
`payload.type`	`string`	Yes
`payload.uid`	`string`	Yes
`payload.attendeeIcsContent`	`string`	No
`payload.organizerIcsContent`	`string`	No
`payload.addedHostUserIds`	`integer[]`	Yes
`payload.removedHostUserIds`	`integer[]`	Yes
`triggerEvent`	`"BOOKING_REASSIGNED"`	Yes

Additional provider fields are preserved. For webhook version 2026-07-27, attendeeIcsContent and organizerIcsContent contain pre-generated calendar invites for attendee and organizer emails. Either field may be absent because of calendar or privacy settings. Automate.ax creates and maintains the Cal.com webhook, verifies x-cal-signature-256, and deduplicates provider retries. Use calcom.onEvent when one automation should receive every supported Cal.com event.

Built-in triggers

Built-in actions

Runtime utilities

Integrations

On booking reassigned

Scope

Event

​Scope

​Event

Scope

Event