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Embedded booking events

Subscribe to events from embedded booking calendars or booking pages to track visitor interactions and booking completions.

List of supported events​

Event nameFires when
oncehub.booking_calendar.loadedBooking calendar is first loaded, on page load.
oncehub.booking_calendar.time_slot_selectedVisitor selects a time slot and confirms it.
oncehub.booking.scheduledVisitor successfully completes the final step of the booking, and the meeting is scheduled.

Events payloads​

oncehub.booking_calendar.loaded​

Payload example:

{
  "type": "oncehub.booking_calendar.loaded",
  "payload": {
    "id": "BKC-8DJNDNL86G",
    "subject": "Introductory Sales Call",
    "host": "USR-FN1DQZ5UTP",
    "url": "https://oncehub.com/PAGE-DFFBCE6467",
    "name": "Introductory Call With Sales",
    "duration_minutes": 30
  }
}

oncehub.booking_calendar.time_slot_selected​

Payload example:

{
  "type": "oncehub.booking_calendar.time_slot_selected",
  "payload": {
    "id": "BKC-8DJNDNL86G",
    "subject": "Introductory Sales Call",
    "host": "USR-FN1DQZ5UTP",
    "url": "https://oncehub.com/PAGE-DFFBCE6467",
    "name": "Introductory Call With Sales",
    "duration_minutes": 30,
    "starting_time": "2026-06-15T14:45:00.000Z",
    "customer_timezone": "America/New_York"
  }
}

oncehub.booking.scheduled​

Payload example:

{
  "type": "oncehub.booking.scheduled",
  "payload": {
    "id": "BKNG-YZ7MEBLJFRV8",
    "subject": "Introductory Sales Call",
    "status": "scheduled",
    "creation_time": "2026-06-18T10:17:50.141Z",
    "starting_time": "2026-06-18T13:00:00.000Z",
    "customer_timezone": "America/New_York",
    "host": "USR-8YB4TL0VW9",
    "duration_minutes": 30,
    "location_description": "",
    "attendees": [
      "henryhostmeeting@gmail.com",
      "donaldmembermeeting@hotmail.com",
      "markmembermeeting@outlook.com"
    ],
    "booking_calendar": "BKC-8DJNDNL86G",
    "cancel_url": "https://oncehub.com/m/BKNG-YZ7MEBLJFRV8/cancel",
    "reschedule_url": "https://oncehub.com/m/BKNG-YZ7MEBLJFRV8",
    "utm_campaign": "",
    "utm_content": "",
    "utm_medium": "",
    "utm_source": "",
    "utm_term": "",
    "ics_url": "https://oncehub.com/api/bookings/ics/e193123e-3ca9-4cad-bd4d-5ed4f75c2550-ljfrv8",
    "custom_fields": [
      {
        "name": "name",
        "value": "Mark"
      },
      {
        "name": "email",
        "value": "mark@outlook.com"
      }
    ]
  }
}