Outlook Calendar MCP server ​

The Outlook Calendar MCP server enables LLMs to read, interpret, and modify calendar data stored in Microsoft Outlook Calendar through natural conversation. It provides tools to retrieve events, check availability, and create, update, or delete calendar entries without requiring direct interaction with the Outlook interface.

Uses ​

Use the Outlook Calendar MCP server when you plan to perform the following actions:

• View upcoming or past calendar events for planning or reporting
• Check availability for yourself or other attendees to support scheduling
• Retrieve full details for specific events
• Schedule new meetings, focus time, or out-of-office events
• Reschedule, update, or cancel existing calendar events
• Access multiple calendars including shared and delegate calendars
• Find open time slots for meetings or personal time
• Manage recurring meetings and series

Example prompts ​

Use the following example prompts to invoke Outlook Calendar MCP server tools:

• What's on my calendar for this week?
• Schedule a 30-minute meeting with Alex and Priya next Tuesday.
• When am I free tomorrow afternoon?
• Get the details for my 2pm meeting today.
• Move my standup meeting to 10am instead of 9am.
• Cancel the budget review meeting on Friday.
• What calendars do I have access to?
• Find a time when Sarah and I are both free this week.

Outlook Calendar MCP server tools ​

The Outlook Calendar MCP server provides the following tools:

Install the Outlook Calendar MCP server ​

Complete the following steps to install a prebuilt MCP server to your project:

Outlook Calendar connection setup ​

https://www.workato.com/oauth/callback

Client credentials-based authentication (OAuth 2.0) ​

https://www.workato.com/oauth/callback

How to use Outlook Calendar MCP server tools ​

Refer to the following sections for detailed information on available tools:

list_events tool ​

The list_events tool retrieves calendar events from one or more Outlook calendars within a time window you specify or by direction and count. Your LLM uses this tool to see what's on your calendar, plan your day or week, or review past events.

Try asking:

• What's on my calendar for this week?
• Show me my meetings for tomorrow.
• List all events on my calendar between January 1st and January 15th.
• What do I have scheduled for next Monday?

get_event tool ​

The get_event tool retrieves full details for a single Outlook Calendar event by its unique event ID. Your LLM uses this tool to read, inspect, or open a specific event, retrieve complete details before modifying or deleting the event, summarize a particular meeting, or confirm metadata prior to scheduling decisions.

Try asking:

• Get the details for my 2pm meeting today.
• Show me the full information for the quarterly review meeting.
• What are the details of my next appointment?
• Read the agenda for the product planning meeting.

get_availability tool ​

The get_availability tool retrieves free and busy availability for you and attendees over a time window you specify. Your LLM uses this tool to find times to schedule a meeting, check whether you or others are free, evaluate potential windows for rescheduling, or identify open periods for PTO or focus time.

Try asking:

• When am I free tomorrow afternoon?
• Find a time when Sarah and I are both free this week.
• Check my availability for Thursday between 2pm and 5pm.
• When are Alex, Mei, and I all available next week?

create_event tool ​

The create_event tool creates a new Outlook Calendar event. Your LLM uses this tool to schedule a new meeting or call, add a calendar hold or focus time block, create a recurring event, block off PTO or OOO time, or create follow-up meetings.

Try asking:

• Schedule a 30-minute meeting with Marco and Jade next Tuesday at 2pm.
• Create a recurring weekly standup every Monday at 9am.
• Block off next Friday as PTO.
• Set up a focus time block for tomorrow morning from 9am to 11am.

update_event tool ​

The update_event tool updates an existing Outlook Calendar event with new details including time, attendees, description, or recurrence. Your LLM uses this tool to move or reschedule a meeting, shorten or extend an event's duration, add, remove, or update attendees, update meeting descriptions or agendas, or modify a recurring series.

Try asking:

• Move my standup meeting to 10am instead of 9am.
• Reschedule the budget review to next Wednesday.
• Add Josh to the product planning meeting.
• Extend my 1pm meeting by 30 minutes.

delete_event tool ​

The delete_event tool deletes or cancels an existing Outlook Calendar event identified by its unique ID. Your LLM uses this tool to cancel meetings, remove calendar blocks, or delete events that are no longer needed.

Try asking:

• Cancel the budget review meeting on Friday.
• Delete my 3pm appointment tomorrow.
• Remove the team lunch from my calendar.
• Cancel the recurring standup for next week only.

list_calendars tool ​

The list_calendars tool retrieves the list of Outlook calendars accessible to you, including default, secondary, shared, and delegate calendars. Your LLM uses this tool to discover available calendars, select a specific calendar for operations, or understand your calendar access.

Try asking:

• What calendars do I have access to?
• Show me all my Outlook calendars.
• List the shared calendars I can view.
• What calendars are available for scheduling?

Getting started ​

View and manage your MCP server tools in the Overview page Tools section. Tool management provides the following capabilities:

• Start tools
• Remove tools
• Edit tools
• Add tools
• Edit your LLM-facing MCP server description