Use the Microsoft Graph API to work with Microsoft Teams

Microsoft Teams is a chat-based workspace in Microsoft 365 that provides built-in access to team-specific calendars, files, OneNote notes, Planner plans, Shifts schedules, and more. You can use the Microsoft Graph API to integrate with Microsoft Teams features.

Common use cases

The following table lists common use cases for Microsoft Teams APIs in Microsoft Graph.

Use cases	REST resources	See also
Create and manage teams, groups and channels	team, channel, group	create team, list teams, create channel
Add tabs, manage or install apps in the Microsoft Teams app catalog	teamsTab, teamsAppInstallation	create teamsTab, list teamsTab, list apps
Create channels and chats to send and receive chat messages	channel, chat, chatMessage	create channel, list channel, send chatMessage
Use tags to classify users or groups based on common attributes within a team	teamworkTag, teamworkTagMember	list teamworkTag, create teamworkTag
Create and receive calls, call records or retrieve meeting coordinates	call, callRecords	answer, invite participants
Connect bots to calls and implement interactive voice response (IVR)	call	IVR scenarios
Create and retrieve online meetings or check users presence and activity	onlineMeetings, presence	create onlineMeetings, meetingAttendanceReport
Create and manage workforce integration with shifts, schedules, time cards or time off in your organization	workforceIntegration, schedule, shift, timeOff, timeOffReason	create workforceIntegration, create schedule, create shift, create timeOff
Use the employee learning API to integrate with Viva Learning	employee learning, learningProvider, learningContent	list learningProviders, list learningContents

IVR scenarios

The following are the Interactive Voice Response (IVR) scenarios that the calling APIs in Microsoft Graph support:

• Play an audio prompt - for example, when a call is placed in a customer service agent's queue.
• Record a response - for example, to record the caller's audio, usually after they heard a prompt with options.
• Subscribe to tones - for example, when you want to know what DTMF tones the caller selected, usually after hearing the audio prompt.
• Cancel media processing - for example, when you want to cancel any playPrompt or recordResponse operations that might be in process.

Microsoft Teams limits

The tested performance and capacity limits of Microsoft Teams are documented in Limits and specifications for Microsoft Teams. These limits apply whether using Microsoft Teams directly or using Microsoft Graph APIs. Because every team has a corresponding group, and every group is a directory object, limits on the number of groups and the number of directory objects ("resources") can also come into play.

Files inside channels are stored in SharePoint; SharePoint online limits apply.

See also throttling limits for Microsoft Teams services.

Teams and groups

In Microsoft Graph, Microsoft Teams is represented by a group resource. Both Microsoft Teams and Microsoft 365 groups address the various needs of group collaboration. Almost all the group-based features apply to Microsoft Teams and Microsoft 365 groups, such as group calendar, files, notes, photo, plans, and so on. The main difference between a team and a Microsoft 365 group is the mode of communication between members. Team members communicate by persistent chat in the context of a specific team. Microsoft 365 group members communicate by group conversations, which are email conversations that occur in the context of a group in Outlook.

Any group that has a team has a resourceProvisioningOptions property that contains "Team".

Note: The Group.resourceProvisioningOptions property can be changed. Do not add or remove "Team" from that collection; otherwise, you'll get incorrect results when you list all teams.

The following are the differences at the API level between teams and groups:

• Persistent chat is available only to Microsoft Teams. This feature is hierarchically represented by the channel and chatMessage resources.
• Group conversations are available only to Microsoft 365 groups. This feature is hierarchically represented by the conversation, conversationThread, and post resources.
• The List joined teams method applies only to Microsoft Teams.
• Calling and online meeting APIs apply only to Microsoft Teams.
• See also the known issues for these APIs.

Membership changes in Microsoft Teams

Use case	Verb	URL
Add member	POST	/teams/{team-id}/members
Remove member	DELETE	/teams/{team-id}/members/{membership-id}
Update member's role	PATCH	/teams/{team-id}/members/{membership-id}
Update team	PATCH	/teams/{team-id}

Polling requirements

If your app polls to see whether a resource has changed, you can only do that once per day. (teamsAsyncOperation is an exception in that it's intended to be polled frequently.) If you need to hear about changes more frequently than that, you should create a subscription to that resource and receive change notifications (webhooks). If you don't find support for the type of subscription you need, we encourage you to provide feedback via the Microsoft 365 Developer Platform ideas forum.

When polling for new messages, you must specify a date range where supported. For details, see get channel messages delta.

Polling is doing a GET operation on a resource over and over again to see if that resource has changed. You're allowed to GET the same resource multiple times a day, as long as it's not polling. For example, it is okay to GET /me/joinedTeams every time the user visits/refreshes your web page, but it is not okay to GET /me/joinedTeams in a loop every 30 seconds to refresh that web page.

Apps that don't follow these polling requirements will be considered in violation of the Microsoft APIs Terms of Use. This may result in additional throttling or the suspension or termination of your use of the Microsoft APIs.

Related content

• Overview for using Microsoft Teams, Shifts, and Viva Learning to foster teamwork
• Sample code: Contoso Airlines, C# mini-samples