Getting Started with Microsoft Graph API

What is Microsoft Graph?

One REST endpoint (graph.microsoft.com) for Users, Mail, SharePoint, Teams, OneDrive, Planner.

Authentication

• Register app in Azure AD

• Add API permissions (User.Read)

• Use MSAL.js to get tokens

First API Call

GET https://graph.microsoft.com/v1.0/me
Authorization: Bearer {token}

Common Endpoints

• /me/messages — Emails

• /sites/{id}/lists — SharePoint lists

• /teams/{id}/channels — Teams channels

Use Graph Explorer to test.