Outlook Calendar

Connect Outlook Calendar to check availability and manage Microsoft 365 meetings.

What it can do​

• List calendars and read events.
• Check attendee availability.
• Create, update, cancel, or delete events.
• Accept, decline, or tentatively accept invitations.

Setup and security​

• You sign in with your own Microsoft account. Nomic can reach only the calendars that account can see.
• Tools that change data ask for approval before they run. The Approval column under Supported tools shows each tool's setting.
• Updating an event's attendees replaces the whole attendee list. Canceling an event notifies attendees; deleting it does not.
• Your Microsoft 365 administrator may need to approve Nomic before you can finish signing in. See Microsoft Graph permissions.
• Outlook Calendar and Outlook Mail are separate sign-ins. Both are separate from the Outlook integration under Settings → Integrations.

To connect, see Add an MCP server.

Example requests​

• "What's on my calendar for the week of the owner walkthrough?"
• "Find a time next week when the architect, the superintendent, and I are all free for an hour."
• "Create a punch walk on Friday at 9am with the subcontractor leads."
• "Cancel Thursday's OAC meeting and let the attendees know."

Supported tools​

Tool	Action	Approval
get_me	Read the signed-in Microsoft profile.	Not required
list_calendars	List available calendars.	Not required
list_events	List events in a time range from a selected calendar.	Not required
get_event	Read an event's details.	Not required
get_schedule	Check attendee availability and free/busy schedules.	Not required
create_event	Create an event.	Required
update_event	Change an event; providing attendees replaces the attendee list.	Required
cancel_event	Cancel an event and notify attendees.	Required
delete_event	Delete an event without sending a cancellation notice.	Required
respond_to_event	Accept, decline, or tentatively accept an invitation.	Required

Microsoft Graph permissions​

This section is for Microsoft 365 administrators reviewing Nomic in Microsoft Entra.

Outlook Calendar requests only delegated permissions. Nomic acts as the signed-in user and reaches only the calendars that user can see. It requests no application permissions.

Permission	Type	Admin consent	Used for
offline_access	Delegated	Not required	Keep the user signed in between sessions with a refresh token.
User.Read	Delegated	Not required	Read the signed-in user's profile.
Calendars.ReadWrite	Delegated	Not required	Read calendars and availability, and manage events.

Microsoft does not require admin consent for these permissions, but your tenant's user consent settings may still require an administrator to approve Nomic.

Outlook Calendar, Outlook Mail, and Microsoft Teams sign in through the same Nomic app in Microsoft Entra. Each requests only its own permissions when a user signs in.

Graph API calls​

Every call goes to https://graph.microsoft.com/v1.0 and stays under /me. get_me uses User.Read; every other tool uses Calendars.ReadWrite.

Tool	Graph API call
get_me	GET /me
list_calendars	GET /me/calendars
list_events	GET /me/calendarView GET /me/calendars/{id}/calendarView
get_event	GET /me/events/{id}
get_schedule	POST /me/calendar/getSchedule
create_event	POST /me/events POST /me/calendars/{id}/events
update_event	PATCH /me/events/{id}
cancel_event	POST /me/events/{id}/cancel
delete_event	DELETE /me/events/{id}
respond_to_event	POST /me/events/{id}/accept POST /me/events/{id}/decline POST /me/events/{id}/tentativelyAccept