Microsoft Office 365
Microsoft Office 365 (Microsoft 365) exposes its productivity and collaboration services through Microsoft Graph at graph.microsoft.com, covering Outlook mail, calendar and contacts, OneNote, Excel workbooks, To Do, Teams, users and groups, plus a hosted MCP server for AI agents, with SDKs in nine languages.
Microsoft Office 365 publishes 17 API contracts indexed on the APIs.io network, including Calendar API, Groups API, Mail API, and 14 more. Tagged areas include Cloud, Collaboration, Enterprise, Microsoft, and Productivity.
The Microsoft Office 365 catalog on APIs.io includes 2 JSON-LD contexts and 3 Spectral governance rulesets.
Microsoft Office 365’s developer surface includes pricing, authentication, support, engineering blog, developer console, changelog, release notes, and 66 more developer resources.
What this lets a business do 1
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
Kin Score
How this is scored →scored 2026-11-06 · rubric v0.27.0
It updates itself when the score changes. Paste this where you link to your API docs:
<a href="https://apis.io/providers/microsoft-office-365/"><img src="https://apis.io/badge/microsoft-office-365/card.svg" alt="Microsoft Office 365 on APIs.io — Kin Score by API Evangelist"></a>Other styles, a README pill and a shields.io endpoint are on the badge page.
- Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
- A2A Agent Card +8 pts — a2a/
-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 - Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
- Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
- Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
- Protected Resource Metadata +5 pts — a served /.well-known/oauth-protected-resource carrying `resource` (documented), and naming its authorization_servers (verified)
- Contract Governance scores 31.8 — up to +8.2 composite points
- Contract Quality scores 70.6 — up to +7.4 composite points
- Operational Transparency scores 44.7 — up to +7.2 composite points
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| Workplace Collaboration App Marketplaces | undeclared | - | - | - |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards implemented 3
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 17
Individual APIs this provider publishes, each with its own machine-readable definition.
Outlook Contacts API
Access to Outlook personal contacts for managing contact information, creating contact folders, and organizing people data.
OneNote API
Access to OneNote notebooks, sections, and pages for creating and managing notes and structured content.
Excel Workbooks and Charts API
Read and modify Excel workbooks stored in OneDrive and SharePoint, including managing worksheets, tables, charts, ranges, and sessions.
Microsoft To Do API
Manage tasks and task lists across To Do clients, Outlook, and Teams for personal task management and day planning.
Microsoft Bookings API
Manage customer bookings, appointment scheduling, business services, and staff information for enterprise and small business owners.
Microsoft Graph Security API
Connect security products, services, and partners to streamline security operations and improve threat protection, detection, and response.
Microsoft Graph Communications API
Create and join online meetings, manage call records, and enable cloud communications capabilities for applications.
Office Add-ins Platform
Platform for building solutions that extend Office applications including Excel, Outlook, Word, PowerPoint, and OneNote using web technologies and the Office JavaScript API.
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 Groups API
Manage Microsoft 365 groups and security groups. Groups provide shared access to resources such as SharePoint sites, shared mailboxes, Planner plans, OneNote notebooks, and conv...
Microsoft Office 365 Mail API
Access and manage Outlook mail messages, mail folders, and message attachments. Supports reading, creating, sending, replying, forwarding, and organizing email.
Microsoft Office 365 Users API
Manage users in Azure Active Directory. Users are the core identity resource representing a person, including their profile, organizational relationships, and access to services.
Outlook Mail API
Access email, manage folders, send mail, and manage mail settings via Microsoft Graph.
Outlook Calendar API
Access and manage calendar events, meeting requests, and calendar groups.
OneDrive API
Access and manage files stored in OneDrive and SharePoint.
Microsoft Teams API
Integrate with Microsoft Teams for chat, channels, meetings, and collaboration.
Microsoft MCP Server for Enterprise
Microsoft-hosted remote Model Context Protocol server (preview) that lets AI agents query Microsoft Entra tenant data in natural language by translating requests into read-only ...
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Postman Collections 1
Ready-to-run Postman collections for exercising this provider's APIs.
Open Collections 5
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Microsoft Office 365 Microsoft Graph API
OPEN COLLECTIONMicrosoft Office 365 Microsoft Graph Calendar API
OPEN COLLECTIONMicrosoft Office 365 Microsoft Graph Calendar Groups API
OPEN COLLECTIONMicrosoft Office 365 Microsoft Graph Calendar Mail API
OPEN COLLECTIONMicrosoft Office 365 Microsoft Graph Calendar Users API
OPEN COLLECTIONArazzo Workflows 19
Multi-step API workflows described with the Arazzo specification.
Microsoft Office 365 Cancel Event
Create an event, read it back to confirm, then delete it from the calendar.
ARAZZOMicrosoft Office 365 Cleanup Draft Message
Create a draft, read it back, then delete it from the mailbox.
ARAZZOMicrosoft Office 365 Create Group With Members
Create a Microsoft 365 group, add a member, then list members to confirm.
ARAZZOMicrosoft Office 365 Deprovision User
Disable a user account, confirm the change, then delete the user.
ARAZZOMicrosoft Office 365 Draft and Send Mail
Create a draft message, read it back, then send it from the mailbox.
ARAZZOMicrosoft Office 365 Find Event in Window
Query a calendar view for a time window, then read the first event found.
ARAZZOMicrosoft Office 365 Find or Create Group
Look up a group by display name and create it only if it does not exist.
ARAZZOMicrosoft Office 365 Notify New User
Create a user, then send a welcome email to their new mailbox address.
ARAZZOMicrosoft Office 365 Onboard User to Group
Create a user, add them to an existing group, then confirm membership.
ARAZZOMicrosoft Office 365 Provision User
Create a new user, then read it back to confirm provisioning.
ARAZZOMicrosoft Office 365 Reschedule Event
Create an event, patch its start and end times, then read it back.
ARAZZOMicrosoft Office 365 Respond to Invitation
Read an event, then accept or decline it based on a desired response.
ARAZZOMicrosoft Office 365 Rotate Group Member
Remove one member from a group, add another, then list members to confirm.
ARAZZOMicrosoft Office 365 Schedule and Accept Event
Create an event, then accept it on behalf of the signed-in user.
ARAZZOMicrosoft Office 365 Schedule Event
Create a calendar event, then read it back to confirm the booking.
ARAZZOMicrosoft Office 365 Triage Inbox Message
Read the latest inbox message, then mark it as read and categorize it.
ARAZZOMicrosoft Office 365 Update Draft and Send
Create a draft, patch its subject and body, then send the updated message.
ARAZZOMicrosoft Office 365 Update Group and Verify
Patch a group's properties, then read it back to verify the change.
ARAZZOMicrosoft Office 365 Update User Profile
Patch a user's profile properties, then read the user back to verify.
ARAZZOScroll for all 19
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Microsoft MCP Server for Enterprise
Microsoft-hosted MCP server that translates natural language requests into read-only Microsoft Graph API calls against a Microsoft Entra tenant.
MCP SERVERAgent Skills 3
Packaged agent skills for driving this provider's APIs from an AI assistant.
Microsoft Office 365 API pricing
Prices published by Microsoft Office 365, read 2026-09-20 from www.microsoft.com/en-us/security/business/microsoft-entra....
| Plan | Price |
|---|---|
| Microsoft Entra ID P1 | $7.00 user/month, paid yearly Includes: Available as standalone or included with Microsoft 365 E3 / Business Premium |
| Microsoft Entra ID P2 | $10.00 user/month, paid yearly Includes: Available as standalone or included with Microsoft 365 E5 |
| Microsoft Entra Suite | $12.00 user/month, paid yearly Includes: Requires subscription to Microsoft Entra ID P1 or package including it |
| Microsoft Entra ID Governance | $7.00 user/month, paid yearly Includes: Available for Microsoft Entra ID P1 and P2 customers |
| Microsoft Entra External ID | See pricing Includes: Core features free for your first 50,000 monthly active users |
| Microsoft Entra Workload ID | $3.00 user/month, paid yearly |
| Microsoft Entra Domain Services | Contact Sales |
Plan details, limits and sources →
Billed by: user · FinOps profile →
Pricing Plans 2
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Microsoft Office 365 Rate Limits
RATE LIMITSService Levels 1
Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.
FinOps 1
Cost, billing, and metering signals for API financial operations.
Features 9
Notable capabilities this provider offers.
Unified API Endpoint
Access Microsoft 365 data through a single REST endpoint at graph.microsoft.com covering mail, calendar, files, users, and groups.
Real-Time Notifications
Subscribe to change notifications via webhooks to receive real-time updates when data changes across Microsoft 365 services.
Batch Requests
Combine multiple API requests into a single HTTP call to reduce network overhead and improve performance.
Delta Queries
Track incremental changes to resources efficiently using delta links without polling entire datasets.
Rich Mail Management
Read, send, reply, forward, and organize email messages with full attachment and folder support.
Calendar and Scheduling
Create events, manage calendars, check free/busy availability, and handle meeting responses programmatically.
File Storage and Sharing
Access OneDrive and SharePoint files with upload, download, sharing, and real-time collaboration capabilities.
Team Collaboration
Manage Microsoft Teams channels, messages, tabs, and apps for team communication and collaboration.
User and Group Management
Create, update, and manage users, groups, and organizational directory resources.
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Semantic Vocabularies 2
JSON-LD contexts and semantic vocabularies used across these APIs.
Microsoft Graph Context
JSON-LDMicrosoft Office 365 Context
JSON-LDSpectral Rules 3
Spectral governance rulesets for linting and validating these APIs.
Microsoft Office 365 API Rules
SPECTRALMicrosoft Office 365 API Rules
SPECTRALJSON Schema 82
Standalone JSON Schema definitions for this provider's data models.
AssignedLicense
JSON SCHEMAAttendee
JSON SCHEMACalendarCollectionResponse
JSON SCHEMACalendar
JSON SCHEMADateTimeTimeZone
JSON SCHEMADirectoryObjectCollectionResponse
JSON SCHEMADirectoryObject
JSON SCHEMAEmailAddress
JSON SCHEMAEventCollectionResponse
JSON SCHEMAEventCreateRequest
JSON SCHEMAEvent
JSON SCHEMAEventUpdateRequest
JSON SCHEMAFollowupFlag
JSON SCHEMAGroupCollectionResponse
JSON SCHEMAGroupCreateRequest
JSON SCHEMAGroup
JSON SCHEMAGroupUpdateRequest
JSON SCHEMAItemBody
JSON SCHEMALocation
JSON SCHEMAMailFolderCollectionResponse
JSON SCHEMAMailFolder
JSON SCHEMAMessageCollectionResponse
JSON SCHEMAMessageCreateRequest
JSON SCHEMAMessage
JSON SCHEMAMessageUpdateRequest
JSON SCHEMAODataError
JSON SCHEMAObjectIdentity
JSON SCHEMAOnlineMeetingInfo
JSON SCHEMAOutlookGeoCoordinates
JSON SCHEMAPasswordProfile
JSON SCHEMAPatternedRecurrence
JSON SCHEMAPhysicalAddress
JSON SCHEMARecipient
JSON SCHEMARecurrencePattern
JSON SCHEMARecurrenceRange
JSON SCHEMAResponseStatus
JSON SCHEMATimeSlot
JSON SCHEMAUserCollectionResponse
JSON SCHEMAUserCreateRequest
JSON SCHEMAUser
JSON SCHEMAUserUpdateRequest
JSON SCHEMAAssignedLicense
JSON SCHEMAAttendee
JSON SCHEMACalendar
JSON SCHEMACalendarCollectionResponse
JSON SCHEMADateTimeTimeZone
JSON SCHEMADirectoryObject
JSON SCHEMADirectoryObjectCollectionResponse
JSON SCHEMAEmailAddress
JSON SCHEMAEvent
JSON SCHEMAEventCollectionResponse
JSON SCHEMAEventCreateRequest
JSON SCHEMAEventUpdateRequest
JSON SCHEMAFollowupFlag
JSON SCHEMAGroup
JSON SCHEMAGroupCollectionResponse
JSON SCHEMAGroupCreateRequest
JSON SCHEMAGroupUpdateRequest
JSON SCHEMAItemBody
JSON SCHEMALocation
JSON SCHEMAMailFolder
JSON SCHEMAMailFolderCollectionResponse
JSON SCHEMAMessage
JSON SCHEMAMessageCollectionResponse
JSON SCHEMAMessageCreateRequest
JSON SCHEMAMessageUpdateRequest
JSON SCHEMAObjectIdentity
JSON SCHEMAODataError
JSON SCHEMAOnlineMeetingInfo
JSON SCHEMAOutlookGeoCoordinates
JSON SCHEMAPasswordProfile
JSON SCHEMAPatternedRecurrence
JSON SCHEMAPhysicalAddress
JSON SCHEMARecipient
JSON SCHEMARecurrencePattern
JSON SCHEMARecurrenceRange
JSON SCHEMAResponseStatus
JSON SCHEMATimeSlot
JSON SCHEMAMicrosoft Office 365 User
JSON SCHEMAUserCollectionResponse
JSON SCHEMAUserCreateRequest
JSON SCHEMAUserUpdateRequest
JSON SCHEMAScroll for all 82
JSON Structure 42
JSON Structure definitions describing this provider's data shapes.
Microsoft Graph Assigned License Structure
JSON STRUCTUREMicrosoft Graph Attendee Structure
JSON STRUCTUREMicrosoft Graph Calendar Collection Response Structure
JSON STRUCTUREMicrosoft Graph Calendar Structure
JSON STRUCTUREMicrosoft Graph Date Time Time Zone Structure
JSON STRUCTUREMicrosoft Graph Directory Object Structure
JSON STRUCTUREMicrosoft Graph Email Address Structure
JSON STRUCTUREMicrosoft Graph Event Collection Response Structure
JSON STRUCTUREMicrosoft Graph Event Create Request Structure
JSON STRUCTUREMicrosoft Graph Event Structure
JSON STRUCTUREMicrosoft Graph Event Update Request Structure
JSON STRUCTUREMicrosoft Graph Followup Flag Structure
JSON STRUCTUREMicrosoft Graph Group Collection Response Structure
JSON STRUCTUREMicrosoft Graph Group Create Request Structure
JSON STRUCTUREMicrosoft Graph Group Structure
JSON STRUCTUREMicrosoft Graph Group Update Request Structure
JSON STRUCTUREMicrosoft Graph Item Body Structure
JSON STRUCTUREMicrosoft Graph Location Structure
JSON STRUCTUREMicrosoft Graph Mail Folder Structure
JSON STRUCTUREMicrosoft Graph Message Collection Response Structure
JSON STRUCTUREMicrosoft Graph Message Create Request Structure
JSON STRUCTUREMicrosoft Graph Message Structure
JSON STRUCTUREMicrosoft Graph Message Update Request Structure
JSON STRUCTUREMicrosoft Graph O Data Error Structure
JSON STRUCTUREMicrosoft Graph Object Identity Structure
JSON STRUCTUREMicrosoft Graph Online Meeting Info Structure
JSON STRUCTUREMicrosoft Graph Outlook Geo Coordinates Structure
JSON STRUCTUREMicrosoft Graph Password Profile Structure
JSON STRUCTUREMicrosoft Graph Patterned Recurrence Structure
JSON STRUCTUREMicrosoft Graph Physical Address Structure
JSON STRUCTUREMicrosoft Graph Recipient Structure
JSON STRUCTUREMicrosoft Graph Recurrence Pattern Structure
JSON STRUCTUREMicrosoft Graph Recurrence Range Structure
JSON STRUCTUREMicrosoft Graph Response Status Structure
JSON STRUCTUREMicrosoft Graph Time Slot Structure
JSON STRUCTUREMicrosoft Graph User Collection Response Structure
JSON STRUCTUREMicrosoft Graph User Create Request Structure
JSON STRUCTUREMicrosoft Graph User Structure
JSON STRUCTUREMicrosoft Graph User Update Request Structure
JSON STRUCTUREMicrosoft Office 365 Structure
JSON STRUCTUREScroll for all 42
Examples 67
Example request and response payloads for these APIs.
Microsoft Graph User Example
EXAMPLEScroll for all 67
Security Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Use Cases 5
What developers build with this provider.
Enterprise Productivity Integration
Build applications that integrate email, calendar, and file management into unified productivity workflows.
Automated Reporting
Generate automated reports by pulling data from mail, calendar, and user profiles across the organization.
Identity and Access Management
Manage user provisioning, group membership, and directory synchronization for enterprise identity workflows.
Team Communication Automation
Automate team notifications, channel management, and messaging workflows across Microsoft Teams.
Document Collaboration
Enable multi-user document editing, sharing, and version tracking through OneDrive and SharePoint APIs.
Integrations 6
Pre-built integrations with other platforms and tools.
Azure Active Directory
Integrate with Azure AD for user authentication, authorization, and directory management.
Microsoft Teams
Build bots, tabs, and messaging extensions that integrate with Microsoft Teams collaboration platform.
Power Automate
Connect Microsoft Graph data to Power Automate flows for no-code/low-code automation.
Power BI
Feed Microsoft 365 data into Power BI dashboards for business intelligence and reporting.
SharePoint
Access SharePoint sites, lists, and document libraries for enterprise content management.
Outlook
Integrate with Outlook mail, calendar, and contacts for personal and shared mailbox management.
Resources
Get Started 3
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 30
Pagination, idempotency, versioning, errors, and events
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Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 9
Authentication, authorization, and security posture
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Operate 7
Status, limits, changes, and where to get help
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Commercial 5
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 4
Properties that don't map to a standard resource type
Source (apis.yml)
Microsoft Office 365 API — frequently asked questions
Does Microsoft Office 365 have an API?
Yes. APIs.io lists 17 APIs from Microsoft Office 365, including Outlook Contacts API, OneNote API and Excel Workbooks and Charts API, and 14 more.
Is there an OpenAPI specification for the Microsoft Office 365 API?
Yes. APIs.io indexes 4 OpenAPI specifications for Microsoft Office 365, each linked for download from this page.
How do I authenticate with the Microsoft Office 365 API?
Microsoft Office 365 documents its authentication (http/oauth2 · 2 schemes). The details are profiled on APIs.io as Microsoft Office 365 Authentication.
How much does the Microsoft Office 365 API cost?
Microsoft Office 365 publishes its prices; its Microsoft Entra ID P1 plan is $7.00 user/month, paid yearly as of 2026-09-20. APIs.io lists 7 pricing plans for Microsoft Office 365, with each plan's price, limits and inclusions under Pricing on this page.
Does Microsoft Office 365 have an MCP server?
Yes. APIs.io lists 1 MCP server for Microsoft Office 365: Microsoft-hosted MCP server that translates natural language requests into read-only Microsoft Graph API calls against a Microsoft Entra tenant.
Is the Microsoft Office 365 API ready for AI agents?
Microsoft Office 365 has a Kin Score of 69.5 out of 100 (exemplar) and an Agent Readiness score of 40.9 (agent-ready), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.