create_event
Create a new calendar event or meeting
LABSCO SUMMARY
Find a slot, book it, then chase the replies — without opening the calendar once.
find_free_slots is what lifts this above a create-and-delete wrapper: it takes a duration and a working-day window and returns candidates, which is the step that normally costs the most clicking. Anything that changes an event needs an eventId, so a change always begins with list_events, and because nearly every tool takes a calendar argument, a shared or secondary calendar is reachable as long as you name it.
What it is
A seven-tool Outlook calendar client covering listing, free-slot search, event creation and updates, and attendee responses across the calendars the account can reach.
What you get
- Events listed for a date range, on a named calendar or the default one
- Free-slot search bounded by workDayStart and workDayEnd for a required duration, so proposed times land inside working hours
- Meetings created with attendees, location and body, and an isMeeting flag separating a real meeting from a personal calendar block
- Existing events changed in place by eventId — time, subject, location or body — or deleted outright
- Attendee response status for one event, and get_calendars to see which calendars can be addressed by name
Requirements
Windows with the Outlook desktop client installed: the server drives Outlook through VBScript, so it does not run on macOS or Linux, and on Windows 11 24H2 or later VBScript has to be added back as an optional feature. Beyond that, an eventId from list_events for anything that updates or deletes. The server takes no key and no environment variables of its own. MIT licensed.
Setup effort
One command — npx -y outlook-calendar-mcp
USE CASES
01
Finding a time that works for a group
Check which calendars are addressable, ask for free slots of the length you need inside the working day, then create the meeting with the attendee list and location in the same step.
02
Moving a meeting that no longer fits
List the range to get the eventId, then change the time, location or subject in place. Nothing that mutates an event works without that id, so the listing is always the first call.
03
Chasing the people who have not replied
Pull the events for the week, then read the response status per attendee for the ones that matter, so the follow-up goes only to the people who have not answered.
04
Clearing out a series that was cancelled
Find the occurrences in the affected range and delete them by id, one call each, rather than opening the calendar to do it by hand.
7 tools
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
delete_event
Delete a calendar event by its ID
find_free_slots
Find available time slots in the calendar
get_attendee_status
Check the response status of meeting attendees
get_calendars
List available calendars
list_events
List calendar events within a specified date range
update_event
Update an existing calendar event
BEFORE YOU INSTALL
What to know first
Tools you get
7 tools when we connected.
Requires
- Windows, with the Microsoft Outlook desktop client installed — it does not run on macOS or Linux
- VBScript — on Windows 11 24H2 and later it is an optional feature you install from Settings
- Node.js 14 or later
- npx on PATH
CONTEXT COST
Light Standing cost
Rated by the size of the 7 tool definitions that ride along on every turn, not by how many there are
INSTALLATION
Connect your client
Add the block to your client, or run the command directly.
Server setup
Configuration file
JSON
{
"mcpServers": {
"outlook-calendar-mcp": {
"command": "npx",
"args": [
"-y",
"outlook-calendar-mcp"
]
}
}
}npx
TERMINAL
npx -y outlook-calendar-mcp
