How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Microsoft Office 365 Calendar API

Access and manage Outlook calendar events, calendars, and calendar groups. Supports scheduling, meeting management, and free/busy lookups.

Microsoft Office 365 Calendar API is one of 12 APIs that Microsoft Office 365 publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 1 JSON Schema definition.

Tagged areas include Calendar. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a JSON-LD context, pricing, authentication docs, rate-limit docs, and 1 JSON Schema.

This API exposes 9 operations across 6 paths, and defines 21 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against 2 base URLs: https://graph.microsoft.com/v1.0, https://graph.microsoft.com/beta.

9 operations 6 paths 21 schemas 1 DELETE4 GET1 PATCH3 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://graph.microsoft.com
Authentication
OAuth 2.0, HTTP Bearer
Terms of Service
Resource Areas
1

Authentication & Security 2

Microsoft Office 365 Calendar API declares 2 security schemes for authenticating requests. It supports OAuth 2.0 (oauth2) using the authorizationCode and clientCredentials flows, exposing 18 scopes. It accepts HTTP bearer tokens (JWT) (bearerAuth). By default, every request must be authenticated.

  • oauth2 — Microsoft identity platform OAuth 2.0 authorization. Supports delegated (user) and application-only permissions. Microsoft Graph uses scopes to control access…
  • bearerAuth — Bearer token obtained from the Microsoft identity platform. Use an access token in the Authorization header of each request.

Paths & Operations 9

Across 6 paths, the API surfaces 9 operations — 1 DELETE, 4 GET, 1 PATCH, 3 POST. Each is listed below with its method, path, parameters, and response codes.

Calendar 9

Access and manage Outlook calendar events, calendars, and calendar groups. Supports scheduling, meeting management, and free/busy lookups.

GET
/me/events
Microsoft Office 365 List Events
listEvents 5 params → 200401403429
POST
/me/events
Microsoft Office 365 Create Event
createEvent body → 201400401403429
GET
/me/events/{event-id}
Microsoft Office 365 Get Event
getEvent 3 params → 200401403404429
PATCH
/me/events/{event-id}
Microsoft Office 365 Update Event
updateEvent 1 param body → 200400401403404429
DELETE
/me/events/{event-id}
Microsoft Office 365 Delete Event
deleteEvent 1 param → 204401403404429
GET
/me/calendars
Microsoft Office 365 List Calendars
listCalendars 4 params → 200401403429
GET
/me/calendarView
Microsoft Office 365 Get Calendar View
getCalendarView 7 params → 200400401403429
POST
/me/events/{event-id}/accept
Microsoft Office 365 Accept Event
acceptEvent 1 param body → 202401403404429
POST
/me/events/{event-id}/decline
Microsoft Office 365 Decline Event
declineEvent 1 param body → 202401403404429

Schemas 21

The contract defines 21 schemas that model the data the API accepts and returns. The most detailed are Event (34 properties), EventCreateRequest (19 properties), EventUpdateRequest (16 properties), Calendar (14 properties). Each schema is shown below with its type and property counts.

ODataError
object
The error response from the Microsoft Graph API following OData conventions.
1 property
EventUpdateRequest
object
16 properties
ItemBody
object
Represents properties of the body of a message or event.
2 properties
RecurrencePattern
object
Describes the frequency by which a recurring event repeats.
7 properties
Location
object
Represents location information of an event.
7 properties
DateTimeTimeZone
object
Describes the date, time, and time zone of a point in time.
2 properties
OnlineMeetingInfo
object
Details for an attendee to join the meeting online.
6 properties
Attendee
object
An event attendee that can be a person or resource.
4 properties
RecurrenceRange
object
Describes a date range over which a recurring event repeats.
5 properties
TimeSlot
object
A time period.
2 properties
ResponseStatus
object
The response status of an attendee or organizer for a meeting request.
2 properties
EventCreateRequest
object
19 properties 3 required
Event
object
An event in a user calendar or the default calendar of a Microsoft 365 group. Contains event details, scheduling, recurrence, attendees, and location informati…
34 properties
PatternedRecurrence
object
The recurrence pattern and range.
2 properties
Recipient
object
Represents information about a user in the sending or receiving end of a message or event.
1 property
Calendar
object
A calendar which is a container for events.
14 properties
EventCollectionResponse
object
4 properties
OutlookGeoCoordinates
object
The geographic coordinates and elevation of a location.
5 properties
EmailAddress
object
The name and email address of a contact or message recipient.
2 properties
PhysicalAddress
object
Represents the street address of a resource such as a contact or event.
5 properties
CalendarCollectionResponse
object
3 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

microsoft-office-365-calendar-api-openapi.yml Raw ↑

Other APIs Microsoft Office 365 publishes across the network.

Outlook Contacts API
OneNote API
Excel Workbooks and Charts API
Microsoft To Do API
Microsoft Bookings API
Microsoft Graph Security API
Microsoft Graph Communications API
Office Add-ins Platform
Microsoft Office 365 Groups API
Microsoft Office 365 Mail API
Microsoft Office 365 Users API
Where this information came from

This is an independent, third-party profile of Microsoft Office 365 Calendar API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.