Overview
Microsoft Graph API is a unified gateway to data across Microsoft 365, including emails, calendars, files, and Teams messages. It uses OAuth 2.0 for authentication and returns JSON data, making it the standard way to integrate with Microsoft services. Beginners should start with the Graph Explorer at developer.microsoft.com to test calls without writing code.
Beginner Tip
Use the Microsoft Graph Explorer (graph.microsoft.com/graph-explorer) to run live API calls with your own account — it handles authentication for you and shows you exactly what data you get back.
Available Data
Example Response
{
"status": "success",
"data": {
"result": "Data from Microsoft Graph",
"description": "Access the data and intelligence in Microsoft 365, Windows 10, and Enterprise Mobility",
"timestamp": "2025-01-15T10:00:00Z"
}
} Field Reference
id Unique identifier of the resource (user, group, message, etc.) displayName Human-readable name of the resource mail Primary email address of the user @odata.context OData metadata URL describing the response format value List of items returned in collection responses such as /me/messages or /me/calendarEvents Implementation Example
const url = "https://docs.microsoft.com/en-us/graph/api/overview";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"Authorization": "Bearer YOUR_API_KEY"
}
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
Common Errors & Troubleshooting
Matrix Score Breakdown
Partially tested on Apr 5, 2026
Technical Specifications
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