Let's break down why you're hitting this vague "Invalid Value" error and how to fix it, depending on what you actually want to achieve.

First: You’re using the wrong API method for deleting events #

The calendars.clear method isn’t designed to delete all events from a calendar. Instead, it’s meant to reset a calendar’s core metadata and settings (like wiping its name, description, or time zone back to defaults) — not remove events. Using it when you intend to delete events is almost certainly the root cause of that error, since the method expects parameters related to calendar configuration, not event management.

If your goal is to delete all events (the common use case) #

Here’s how to properly fetch and delete every event from a calendar in Node.js, including handling recurring events and pagination:

async function deleteAllEvents(calendarId, auth) {
  try {
    let nextPageToken;
    do {
      // Fetch up to 100 events per request (API limit)
      const response = await calendar.events.list({
        auth,
        calendarId,
        maxResults: 100,
        pageToken: nextPageToken,
        singleEvents: true, // Expands recurring events into individual instances
      });

      const events = response.data.items;
      if (events.length === 0) {
        console.log('No events left to delete.');
        break;
      }

      // Batch delete all fetched events
      const deletePromises = events.map(event => 
        calendar.events.delete({ auth, calendarId, eventId: event.id })
      );
      await Promise.all(deletePromises);
      console.log(`Deleted ${events.length} events.`);

      nextPageToken = response.data.nextPageToken;
    } while (nextPageToken);

    console.log('All events have been removed successfully.');
  } catch (err) {
    console.error('The API returned an error:', err);
    throw err;
  }
}

Key details for this approach: #

• singleEvents: true ensures you delete every instance of recurring events, not just the parent event template.
• Pagination handling with nextPageToken makes sure you don’t miss events that exceed the API’s 100-per-request limit.
• Using Promise.all batches deletions for better efficiency than deleting events one by one.

If you actually intended to use calendars.clear (reset calendar settings) #

If your goal was to wipe the calendar’s metadata (not delete events), the "Invalid Value" error usually comes from one of these issues:

• Invalid calendarId: Double-check you’re using a valid ID (like primary for the user’s main calendar, or the full email/ID of a shared calendar).
• Insufficient permissions: calendars.clear requires the full https://www.googleapis.com/auth/calendar scope — make sure your OAuth token includes this (not just event-write or read-only scopes).
• API not enabled: Verify the Google Calendar API is turned on in your Google Cloud Console project.

Correct calendars.clear usage (if this is your intended action): #

async function clearCalendarSettings(calendarId, auth) {
  try {
    const response = await calendar.calendars.clear({ auth, calendarId });
    console.log('Calendar settings cleared successfully:', response.data);
  } catch (err) {
    console.error('The API returned an error:', err);
    throw err;
  }
}

内容的提问来源于stack exchange，提问作者Cemil Birinci