Microsoft 365

Microsoft 365 is Microsoft's productivity and collaboration suite, including Word, Excel, PowerPoint, Outlook, Teams, OneDrive, SharePoint, and OneNote, along with identity, security, and device management services. Developers access Microsoft 365 data and intelligence programmatically through Microsoft Graph, a unified REST API that exposes users, mail, calendar, files, Teams messages, sites, devices, and more across the Microsoft cloud.

Microsoft 365 publishes 7 APIs on the APIs.io network, including Calendar API, Files API, Groups API, and 4 more. Tagged areas include Productivity, Collaboration, Email, Calendar, and File.

Microsoft 365’s developer surface includes authentication, documentation, signup flow, pricing, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.4/100 thin ▬ flat Agent 22/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs

Productivity Collaboration Email Calendar File Identity Microsoft Microsoft Graph

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 36.4/100 · thin

Contract Quality 12.2 / 23

Developer Ergonomics 8.1 / 18

Access Clarity 4.7 / 18

Operational Transparency 2.2 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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 0 / 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

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/microsoft-365: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

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

Microsoft Graph API

Unified REST API providing a single endpoint to access data and intelligence across Microsoft 365, Microsoft Entra ID, Windows, and Enterprise Mobility + Security. Supports OAut...

Microsoft Graph Beta API

Beta endpoint of the Microsoft Graph API offering preview features and resources before they are promoted to v1.0, including additional insights, reporting, and management capab...

Microsoft 365 Calendar API

The Calendar API from Microsoft 365 — 1 operation(s) for calendar.

Microsoft 365 Files API

The Files API from Microsoft 365 — 1 operation(s) for files.

Microsoft 365 Groups API

The Groups API from Microsoft 365 — 3 operation(s) for groups.

Microsoft 365 Mail API

The Mail API from Microsoft 365 — 1 operation(s) for mail.

Microsoft 365 Me API

The Me API from Microsoft 365 — 3 operation(s) for me.

Microsoft 365 Teams API

The Teams API from Microsoft 365 — 2 operation(s) for teams.

Microsoft 365 Users API

The Users API from Microsoft 365 — 2 operation(s) for users.

Scroll for all 9

Open Collections 9

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Microsoft 365 (Microsoft Graph API) Calendar API

OPEN COLLECTION

Microsoft 365 (Microsoft Graph API) Calendar Files API

OPEN COLLECTION

Microsoft 365 (Microsoft Graph API) Calendar Groups API

OPEN COLLECTION

Microsoft 365 (Microsoft Graph API) Calendar Mail API

OPEN COLLECTION

Microsoft 365 (Microsoft Graph API) Calendar Me API

OPEN COLLECTION

Microsoft 365 (Microsoft Graph API) Calendar Teams API

OPEN COLLECTION

Microsoft 365 (Microsoft Graph API) Calendar Users API

OPEN COLLECTION

Microsoft 365 (Microsoft Graph API)

OPEN COLLECTION

Scroll for all 9

GraphQL 1

GraphQL schemas published by this provider.

Microsoft 365 GraphQL Schema

This conceptual GraphQL schema represents the Microsoft 365 productivity suite APIs as exposed through Microsoft Graph, the unified REST API endpoint at `https://graph.microsoft...

GRAPHQL

Security Posture 4

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

Microsoft 365 Authentication

oauth2 · 1 scheme

SECURITY

Microsoft 365 Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Microsoft 365 Vulnerability Disclosure

security.txt · contact published

SECURITY

Microsoft 365 Trust Center

GDPR

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Microsoft 365 Scopes

8 scopes · authorizationCode/clientCredentials

8 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Microsoft 365 Agentic Access

18 operations · 5 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Signup

Signup

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

Authentication

OAuthScopes

Authentication

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: microsoft-365
name: Microsoft 365
description: Microsoft 365 is Microsoft's productivity and collaboration suite, including Word, Excel, PowerPoint, Outlook,
  Teams, OneDrive, SharePoint, and OneNote, along with identity, security, and device management services. Developers access
  Microsoft 365 data and intelligence programmatically through Microsoft Graph, a unified REST API that exposes users, mail,
  calendar, files, Teams messages, sites, devices, and more across the Microsoft cloud.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/microsoft-365.png
tags:
- Productivity
- Collaboration
- Email
- Calendar
- File
- Identity
- Microsoft
- Microsoft Graph
tags_raw:
- Productivity
- Collaboration
- Email
- Calendar
- Files
- Identity
- Microsoft
- Microsoft Graph
url: https://raw.githubusercontent.com/api-evangelist/microsoft-365/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.23'
apis:
- aid: microsoft-365:graph-api
  name: Microsoft Graph API
  description: Unified REST API providing a single endpoint to access data and intelligence across Microsoft 365, Microsoft
    Entra ID, Windows, and Enterprise Mobility + Security. Supports OAuth 2.0 authentication and covers users, mail, calendar,
    contacts, files (OneDrive), Teams, SharePoint, OneNote, Planner, To Do, Excel, and security services.
  humanURL: https://learn.microsoft.com/en-us/graph/overview
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - Microsoft Graph
  - User
  - Mail
  - Calendar
  - File
  - Team
  - SharePoint
  - Identity
  tags_raw:
  - Microsoft Graph
  - Users
  - Mail
  - Calendar
  - Files
  - Teams
  - SharePoint
  - Identity
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/overview
  - type: APIReference
    url: https://learn.microsoft.com/en-us/graph/api/overview
  - type: Graph Explorer
    url: https://developer.microsoft.com/graph/graph-explorer
  - type: SDKs
    url: https://learn.microsoft.com/en-us/graph/sdks/sdks-overview
  - url: graphql/microsoft-365-graphql.md
    type: GraphQL
- aid: microsoft-365:graph-beta-api
  name: Microsoft Graph Beta API
  description: Beta endpoint of the Microsoft Graph API offering preview features and resources before they are promoted to
    v1.0, including additional insights, reporting, and management capabilities.
  humanURL: https://learn.microsoft.com/en-us/graph/use-the-api
  baseURL: https://graph.microsoft.com/beta
  tags:
  - Microsoft Graph
  - Beta
  - Preview
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/graph/use-the-api
- aid: microsoft-365:microsoft-365-calendar-api
  name: Microsoft 365 Calendar API
  description: The Calendar API from Microsoft 365 — 1 operation(s) for calendar.
  humanURL: https://learn.microsoft.com/en-us/graph/overview
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - Calendar
  properties:
  - type: OpenAPI
    url: openapi/microsoft-365-calendar-api-openapi.yml
- aid: microsoft-365:microsoft-365-files-api
  name: Microsoft 365 Files API
  description: The Files API from Microsoft 365 — 1 operation(s) for files.
  humanURL: https://learn.microsoft.com/en-us/graph/overview
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - File
  tags_raw:
  - Files
  properties:
  - type: OpenAPI
    url: openapi/microsoft-365-files-api-openapi.yml
- aid: microsoft-365:microsoft-365-groups-api
  name: Microsoft 365 Groups API
  description: The Groups API from Microsoft 365 — 3 operation(s) for groups.
  humanURL: https://learn.microsoft.com/en-us/graph/overview
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - Group
  tags_raw:
  - Groups
  properties:
  - type: OpenAPI
    url: openapi/microsoft-365-groups-api-openapi.yml
- aid: microsoft-365:microsoft-365-mail-api
  name: Microsoft 365 Mail API
  description: The Mail API from Microsoft 365 — 1 operation(s) for mail.
  humanURL: https://learn.microsoft.com/en-us/graph/overview
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - Mail
  properties:
  - type: OpenAPI
    url: openapi/microsoft-365-mail-api-openapi.yml
- aid: microsoft-365:microsoft-365-me-api
  name: Microsoft 365 Me API
  description: The Me API from Microsoft 365 — 3 operation(s) for me.
  humanURL: https://learn.microsoft.com/en-us/graph/overview
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - Me
  properties:
  - type: OpenAPI
    url: openapi/microsoft-365-me-api-openapi.yml
- aid: microsoft-365:microsoft-365-teams-api
  name: Microsoft 365 Teams API
  description: The Teams API from Microsoft 365 — 2 operation(s) for teams.
  humanURL: https://learn.microsoft.com/en-us/graph/overview
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - Team
  tags_raw:
  - Teams
  properties:
  - type: OpenAPI
    url: openapi/microsoft-365-teams-api-openapi.yml
- aid: microsoft-365:microsoft-365-users-api
  name: Microsoft 365 Users API
  description: The Users API from Microsoft 365 — 2 operation(s) for users.
  humanURL: https://learn.microsoft.com/en-us/graph/overview
  baseURL: https://graph.microsoft.com/v1.0
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/microsoft-365-users-api-openapi.yml
common:
- type: CapabilityMap
  url: capabilities/microsoft-365-capability-edges.yml
  name: Microsoft 365 Business Capability Map
- type: AgenticAccess
  url: agentic-access/microsoft-365-agentic-access.yml
- type: TrustCenter
  url: security/microsoft-365-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/microsoft-365-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/microsoft-365-domain-security.yml
- type: Authentication
  url: authentication/microsoft-365-authentication.yml
- type: OAuthScopes
  url: scopes/microsoft-365-scopes.yml
- type: LinkedIn
  url: https://www.linkedin.com/showcase/microsoft-365
- type: Website
  url: https://www.microsoft.com/microsoft-365
- type: DeveloperPortal
  url: https://developer.microsoft.com/microsoft-365
- type: Documentation
  url: https://learn.microsoft.com/en-us/graph
- type: Signup
  url: https://www.microsoft.com/microsoft-365/business/compare-all-plans
- type: Pricing
  url: https://www.microsoft.com/microsoft-365/business/compare-all-plans
- type: GitHubOrganization
  url: https://github.com/microsoftgraph
- type: Authentication
  url: https://learn.microsoft.com/en-us/graph/auth/auth-concepts
- type: StatusPage
  url: https://admin.microsoft.com/servicestatus
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/microsoft-365"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/microsoft-365/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/microsoft-365/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.