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Understanding Microsoft Graph Calendar and Teams Event API Costs

Khadija KhanKhadija Khan Sep 28, 2026 869 views

Question details

The user needs to understand the costs, licensing, and usage limits associated with using Microsoft Graph API for Calendar and Teams event requests.

Are Microsoft Graph Calendar and Teams Event Requests Free?
Product
Microsoft Graph
Device & OS
not provided
Scenario
Developing applications that utilize Microsoft Graph to read calendars and create Teams events.
Observed behavior
Seeking clarity on potential charges, request throttling, and quota limits for these specific Microsoft Graph API endpoints.
Before you start

Ensure you have your Microsoft Azure tenant details and current Microsoft 365 subscription information ready before consulting support.

Solution 1Recommended

Consult Microsoft Q&A Specialists for Accurate Licensing Info

Because Microsoft Graph API costs and limits vary by tenant type and usage volume, asking official Microsoft specialists is the most reliable way to get up-to-date pricing.

Microsoft Graph API provides extensive endpoints for interacting with Microsoft 365 services. While basic usage is often included with your Microsoft 365 subscription, high-volume requests or specific premium endpoints might incur costs or hit throttling limits.

To get accurate details about your specific application architecture, you should post your inquiry on the official Microsoft Q&A forums.

1
Navigate to Microsoft Q&A

Open your web browser and go to the official Microsoft Q&A platform (learn.microsoft.com/en-us/answers/).

2
Log in to your account

Click the 'Sign In' button at the top right and authenticate using your Microsoft developer or Azure administrator credentials.

3
Post your question with relevant tags

Click 'Ask a question'. Enter your query about Calendar and Teams event costs, and ensure you add the 'Microsoft Graph' and 'Microsoft Entra ID' tags so the question is routed to the correct specialists.

4
Include your usage details

In the body of your post, specify the exact API endpoints you plan to use, your expected request volume, and your Azure tenant type to receive a precise evaluation of quotas and potential charges.

Consult Microsoft Q&A Specialists for Accurate Licensing Info
Throttling Limits: Be aware that even free API requests are subject to throttling. Excessive concurrent calls will result in HTTP 429 (Too Many Requests) errors regardless of your billing status.
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Frequently Asked Questions

What is Microsoft Graph API request throttling?

Throttling limits the number of concurrent calls an application can make to a service to prevent overuse and ensure stability. If your app exceeds these limits when reading calendars or creating Teams events, Microsoft Graph will return HTTP 429 Too Many Requests errors, and you must implement retry logic.

Can I use Microsoft Graph Calendar APIs with a free developer account?

Yes, Microsoft offers a free Microsoft 365 E5 developer subscription for testing and building applications. This includes access to most Microsoft Graph endpoints, including Calendar and Teams, subject to fair usage policies and non-commercial limits.

Where can I monitor my Microsoft Graph API usage and errors?

You can monitor your API request volume, failure rates, and throttling directly from the Azure portal. Navigate to your app registration's Insights section, or use Azure Monitor logs to track detailed usage metrics and diagnose performance bottlenecks.