Microsoft Graph
Access the data and intelligence in Microsoft 365, Windows 10, and Enterprise Mobility
- Authentication
- OAuth
- HTTPS
- Yes
- CORS
- Unknown
- Category
- Social
- Documentation / URL
- https://docs.microsoft.com/en-us/graph/api/overview
Overview
Microsoft Graph unifies Microsoft 365 data — mail, calendar, files, users — via OAuth 2.0 (an unauthenticated request returns 401, verified).
Quick Start
Requires OAuth tokens:
curl "https://graph.microsoft.com/v1.0/me" \
-H "Authorization: Bearer YOUR_ACCESS_TOKEN"{ "displayName": "John Doe", "mail": "john@example.com" }Authentication
- Register an app in Azure AD → OAuth 2.0 flow → access token.
- Send it as
Authorization: Bearer(missing → 401, verified).
Rate Limits & Notes
- Free within Microsoft tenant quotas.
- Covers Outlook, OneDrive, Teams, SharePoint, and more.
FAQ
Is Microsoft Graph free? Free within tenant quotas.
Why 401? OAuth token required (verified).
What can I access? Mail, calendar, files, users, and Teams.
More in Social
| API | Auth | HTTPS | CORS | |
|---|---|---|---|---|
| 4chan Simple image-based bulletin board dedicated to a variety of topics | No auth | Yes | Yes | ↗ |
| Ayrshare Social media APIs to post, get analytics, and manage multiple users social media accounts | API Key | Yes | Yes | ↗ |
| aztro Daily horoscope info for yesterday, today, and tomorrow | No auth | Yes | Unknown | ↗ |
| Blogger The Blogger APIs allows client applications to view and update Blogger content | OAuth | Yes | Unknown | ↗ |
| Bluesky Decentralized social networking via the AT protocol | No auth | Yes | Yes | ↗ |