from: (Optional, integer) Skips the specified number of calendars. This parameter is supported only when you omit the <calendar_id>. Defaults to 0.
size: (Optional, integer) Specifies the maximum number of calendars to obtain. This parameter is supported only when you omit the <calendar_id>. Defaults to 100.

page.from: (integer) Skips the specified number of calendars. This object is supported only when you omit the <calendar_id>. Defaults to 0.
page.size: (integer) Specifies the maximum number of calendars to obtain. This object is supported only when you omit the <calendar_id>. Defaults to 100.

The API returns the following information:

calendars: (array) An array of calendar resources. For more information, see Calendar resources.

You must have monitor_ml, monitor, manage_ml, or manage cluster privileges to use this API. For more information, see Security privileges.

The following example gets configuration information for the planned-outages calendar:

GET _xpack/ml/calendars/planned-outages

The API returns the following results:

{
  "count": 1,
  "calendars": [
    {
      "calendar_id": "planned-outages",
      "job_ids": [
        "total-requests"
      ]
    }
  ]
}