Office 365 website screenshot

Office 365

Microsoft Office 365 is a cloud-based suite of productivity and collaboration applications that integrates all Microsoft's existing online applications into a single platform including email, calendar, files, Teams, and SharePoint.

Office 365 publishes 1 API on the APIs.io network: Microsoft Graph API. Tagged areas include Cloud, Collaboration, Documents, Email, and Enterprise.

Office 365’s developer surface includes documentation, authentication, support, engineering blog, and 9 more developer resources.

41.2/100 thin ▬ flat Agent 28/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemium
5 APIs
CloudCollaborationDocumentsEmailEnterpriseProductivity

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 41.2/100 · thin
Contract Quality 8.1 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 13.7 / 20
Operational Transparency 6.8 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 28/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/office-365: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

Microsoft Graph API

The primary API for Office 365, providing access to data and intelligence in Microsoft 365, Windows 10, and Enterprise Mobility + Security.

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.

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Office 365 Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Office 365 Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Office 365 Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 4

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: office-365
name: Office 365
description: Microsoft Office 365 is a cloud-based suite of productivity and collaboration applications that integrates all
  Microsoft's existing online applications into a single platform including email, calendar, files, Teams, and SharePoint.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/office-365.png
tags:
- Cloud
- Collaboration
- Documents
- Email
- Enterprise
- Productivity
url: https://raw.githubusercontent.com/api-evangelist/office-365/refs/heads/main/apis.yml
created: '2024-01-15'
modified: '2026-04-28'
specificationVersion: '0.19'
apis:
- aid: office-365:microsoft-graph-api
  name: Microsoft Graph API
  description: The primary API for Office 365, providing access to data and intelligence in Microsoft 365, Windows 10, and
    Enterprise Mobility + Security.
  humanURL: https://developer.microsoft.com/en-us/graph
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - Calendar
  - Graph
  - Mail
  - SharePoint
  - Teams
  - Users
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/overview
  - type: OpenAPI
    url: https://raw.githubusercontent.com/microsoftgraph/msgraph-metadata/master/openapi/v1.0/openapi.yaml
  - type: Authentication
    url: https://learn.microsoft.com/en-us/graph/auth/
  - type: SDKs
    url: https://learn.microsoft.com/en-us/graph/sdks/sdks-overview
  - type: ChangeLog
    url: https://developer.microsoft.com/en-us/graph/changelog
- aid: office-365:outlook-mail-api
  name: Outlook Mail API
  description: Access email, manage folders, send mail, and manage mail settings via Microsoft Graph.
  humanURL: https://learn.microsoft.com/en-us/graph/outlook-mail-concept-overview
  baseURL: https://graph.microsoft.com/v1.0/me/messages
  tags:
  - Email
  - Mail
  - Outlook
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/mail-api-overview
- aid: office-365:outlook-calendar-api
  name: Outlook Calendar API
  description: Access and manage calendar events, meeting requests, and calendar groups.
  humanURL: https://learn.microsoft.com/en-us/graph/outlook-calendar-concept-overview
  baseURL: https://graph.microsoft.com/v1.0/me/calendar
  tags:
  - Calendar
  - Events
  - Meetings
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/calendar
- aid: office-365:onedrive-api
  name: OneDrive API
  description: Access and manage files stored in OneDrive and SharePoint.
  humanURL: https://learn.microsoft.com/en-us/onedrive/developer/
  baseURL: https://graph.microsoft.com/v1.0/me/drive
  tags:
  - Files
  - OneDrive
  - Storage
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/onedrive
- aid: office-365:microsoft-teams-api
  name: Microsoft Teams API
  description: Integrate with Microsoft Teams for chat, channels, meetings, and collaboration.
  humanURL: https://learn.microsoft.com/en-us/graph/teams-concept-overview
  baseURL: https://graph.microsoft.com/v1.0/teams
  tags:
  - Chat
  - Collaboration
  - Teams
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/api/resources/teams-api-overview
common:
- type: TrustCenter
  url: security/office-365-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/office-365-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/office-365-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/OfficeDev
- type: LinkedIn
  url: https://www.linkedin.com/showcase/microsoft-365
- type: Website
  url: https://www.microsoft.com/en-us/microsoft-365
- type: Documentation
  url: https://developer.microsoft.com/en-us/microsoft-365
- type: Authentication
  url: https://learn.microsoft.com/en-us/azure/active-directory/develop/
- type: StatusPage
  url: https://status.office365.com/
- type: Support
  url: https://learn.microsoft.com/en-us/answers/products/
- type: Blog
  url: https://devblogs.microsoft.com/microsoft365dev/
- type: TermsOfService
  url: https://www.microsoft.com/en-us/servicesagreement
- type: PrivacyPolicy
  url: https://privacy.microsoft.com/
- type: Integrations
  url: https://www.microsoft.com/en-us/marketplace
integrations:
- name: Microsoft
- name: Two people looking at a computer.
- name: This is placeholder text for
- name: IDC
- name: Nationwide
- name: RSA company
- name: Teleperformance
- name: A woman smiling at a laptop
- name: A man holding a laptop.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com