Microsoft Graph

API

Unified API for accessing Microsoft 365, Windows 10, and Enterprise Mobility data

Overview

Microsoft Graph is a RESTful API that provides unified access to data across Microsoft 365, Windows 10, and Enterprise Mobility + Security. It uses JSON for request/response formats and offers endpoints for users, emails (Outlook), files (OneDrive/SharePoint), calendars, Teams, devices, and security data. Use cases include building enterprise productivity apps (syncing calendar/events), team collaboration tools (integrating Teams messages), user management systems (provisioning accounts), and security solutions (monitoring device compliance). It supports OAuth 2.0 for authentication and offers SDKs for C#, Java, Python, and JavaScript to simplify integration.

Example Integration (JavaScript)

script.js JS


fetch('https://docs.microsoft.com/en-us/graph/api/overview')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON request/response
OAuth 2.0 authentication
Unified access to Microsoft ecosystem
Multi-language SDK support
Real-time updates via webhooks

Frequently Asked Questions

? Is Microsoft Graph free to use?

Yes, developers can access Microsoft Graph using a free Microsoft 365 Developer Program subscription. Enterprise use requires appropriate Microsoft 365 licenses for the tenant.

? Does it require an API Key?

No, Microsoft Graph uses OAuth 2.0 authentication flows (like authorization code or client credentials) instead of API keys for secure, granular access control.

? What is the response format?

Microsoft Graph returns data in JSON format for all endpoints, ensuring compatibility with most modern applications and easy parsing.

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Tool Info

Pricing Freemium

Category Social

Platform Public API

Pros

⊕ Unified integration point for Microsoft services
⊕ Extensive official documentation
⊕ Cross-platform SDKs for easy development
⊕ Scalable for enterprise-level workloads
⊕ Supports real-time data synchronization

Cons

⊖ Requires Microsoft 365 tenant for full functionality
⊖ Steep learning curve for advanced features
⊖ Rate limits apply to API calls
⊖ Some endpoints require specific enterprise licenses