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Microsoft Project Calendars API

Manage enterprise calendars

Microsoft Project Calendars API is one of 16 APIs that Microsoft Project publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 14 JSON Schema definitions.

Tagged areas include Calendars. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, authentication docs, code examples, a JSON-LD context, and 14 JSON Schemas.

This API exposes 4 operations across 2 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 1.0.

Requests are made against a single base URL, https://{tenant}.sharepoint.com/sites/pwa/_api/ProjectServer.

4 operations 2 paths 3 schemas 1 DELETE2 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0
Base URL
https://{tenant}.sharepoint.com/sites/pwa/_api/ProjectServer
Authentication
OAuth 2.0
Resource Areas
1

Authentication & Security 1

Microsoft Project Calendars API declares 1 security scheme for authenticating requests. It supports OAuth 2.0 (oauth2) using the authorizationCode flow, exposing 2 scopes. By default, every request must be authenticated.

  • oauth2 — OAuth 2.0 authentication via Azure AD for SharePoint Online

Paths & Operations 4

Across 2 paths, the API surfaces 4 operations — 1 DELETE, 2 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Calendars 4

Manage enterprise calendars

GET
/Calendars
Microsoft Project List Calendars
listCalendars → 200
POST
/Calendars
Microsoft Project Create Calendar
createCalendar body → 201
GET
/Calendars('{calendarId}')
Microsoft Project Get Calendar
getCalendar 1 param → 200
DELETE
/Calendars('{calendarId}')
Microsoft Project Delete Calendar
deleteCalendar 1 param → 204

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are Calendar (5 properties), CalendarCollection (1 property), CalendarCreate (1 property). Each schema is shown below with its type and property counts.

CalendarCreate
object
1 property 1 required
Calendar
object
5 properties
CalendarCollection
object
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

microsoft-project-calendars-api-openapi.yml Raw ↑

Other APIs Microsoft Project publishes across the network.

Microsoft Project Online CSOM API
Microsoft Project OData Reporting API
Microsoft Project JavaScript API
Microsoft Project Assignments API
Microsoft Project Custom Fields API
Microsoft Project Enterprise Project Types API
Microsoft Project Event Handlers API
Microsoft Project Lookup Tables API
Microsoft Project Phases API
Microsoft Project Projects API
Microsoft Project Resources API
Microsoft Project Stages API
Where this information came from

This is an independent, third-party profile of Microsoft Project Calendars 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.

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