> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.deepmask.io/llms.txt
> Use this file to discover all available pages before exploring further.

# List Calendars

`outlook_list_calendars`

Lists all calendars in the user's Outlook account. Returns calendar IDs, names, colours, and whether the signed-in user can edit each one. Use the returned `id` as `calendar_id` in event actions to target a specific calendar.

## Parameters

| Parameter         | Type   | Required | Description                                        |
| ----------------- | ------ | -------- | -------------------------------------------------- |
| `response_format` | string | No       | Output format: `"markdown"` (default) or `"json"`. |

## Returns

An array of calendar objects, each with `id`, `name`, `color`, `isDefaultCalendar`, and `canEdit`.

## Example use

> "What calendars do I have in Outlook?"