# Microsoft Office 365

**Canonical:** https://apis.io/providers/microsoft-office-365/  
**Website:** https://developer.microsoft.com/en-us/microsoft-365  
**APIs profiled:** 12

A collection of APIs provided by Microsoft Office 365 for productivity, collaboration, and enterprise services.

## Kin Score — 54.9 / 100 (strong)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 54.9).

| Facet | Score |
|---|---|
| Discoverability | 63.0 |
| Contract Quality | 79.4 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 76.2 |
| Commercial Clarity | 44.7 |
| Access Clarity | 44.7 |

## Agent readiness — 38.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | verified |
| Rate Limit Signal | verified |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Paid · Self-serve signup — onboarding: self-serve, pricing: paid, trial: no (confidence: high).

## APIs (12)

- **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.

## Agentic access (1)

- **Microsoft Office 365 Agentic Access** — 31 operations · 17 acting

## Security (3)

- **Microsoft Office 365 Authentication** — http/oauth2 · 2 schemes
- **Microsoft Office 365 Domain Security** — TLSv1.3 · HSTS · DMARC
- **Microsoft Office 365 Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Microsoft Office 365 Plans Pricing**

## Use cases (5)

- **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.

## Tags

Cloud, Collaboration, Enterprise, Microsoft, Productivity

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/microsoft-office-365/). Scores are computed from the provider's own public artifacts under a published rubric.