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Nappai Documentation

Google Calendar Modifier

Google Calendar Modifier writes to one of your Google calendars: it creates a new event, changes the details of several events at once or deletes them. The events it changes or deletes are the ones it receives through Events, usually from Google Calendar Loader.

When to use it

  • Create an appointment in the calendar when a customer books on your website.
  • Change the location of every meeting on a given day.
  • Delete the appointments of a customer who cancels.

Configuration

The component needs a Google Calendar credential connected to the Google account of the calendar. See Credentials.

FieldWhat it does
Credential (required)The Google Calendar credential used to write to the calendar.
OperationWhat the component does: CREATE (create an event), UPDATE (change events) or DELETE (delete events). Default: CREATE.
CalendarThe calendar it works on. The list loads with the account’s calendars; click the refresh button if they don’t appear. Left empty, the account’s primary calendar is used.
Event SummaryThe title of the event.
Start TimeThe start date and time, in the format YYYY-MM-DD HH:MM:SS AM/PM zone, for example 2026-03-02 09:00:00 AM UTC. An ISO 8601 date such as 2026-03-02T09:00:00Z is also accepted; without a zone, UTC is used.
End TimeThe end date and time, in the same format.
EventsWith UPDATE and DELETE, the events that are changed or deleted. Each one must carry its ID in the id field.

Advanced options

FieldWhat it does
DescriptionThe description of the event.
LocationThe location of the event.

With UPDATE, only the details you fill in are changed; the rest stay as they were in each event.

Output

The Event Result output returns the event created or the events changed, with all their details. With DELETE, it returns the confirmation that the events have been deleted, with their IDs in deleted_ids.

Example

A clinic wants to add to its calendar the appointments booked on its website:

  1. Start the flow with a Webhook Input that receives the booking.
  2. Add Google Calendar Modifier, pick the credential, the practice’s calendar and the CREATE operation.
  3. Fill in Event Summary, Start Time and End Time with the booking details.
  4. In Description, add the patient’s name and phone number.

Good practices

  • Write the dates exactly in the format shown; otherwise the component returns an error.
  • Before using DELETE, check which events reach it through Events: they are all deleted.