Retrieve The List Of Apps Installed In The Specified Team Using Microsoft Teams Graph API In PowerShell

Graph API can be used to automate Microsoft Teams lifecycle such as creating teams, channels, adding members etc.

Refer to this link to know the list of Graph APIs available for Microsoft Teams.

You will see how to retrieve the list of apps installed in the specified team by calling Graph API in PowerShell.

Microsoft Graph Explorer

HTTP - GET https://graph.microsoft.com/v1.0/teams/{id}/installedApps?$expand=teamsAppDefinition

In this article, you will see how to perform the following tasks:

Register an Application in Azure - Register an app in Azure AD and add the required permissions to access the Graph API
Create and execute the PowerShell script

In the left navigation, click Overview. Copy the Application (client) ID value. This value will be used in PowerShell for authentication.

Open Notepad and paste the following code. Save the file as ps1.
1. # Input Parameters
2. $clientId = "c714f180-c8cc-4f70-b720-409c798274a9"
3. $clientSecret = "fXzmWCUDmeXXqQ@D3b4xxd6GzrAY5[@="
4. $tenantName = "c986.onmicrosoft.com"
5. $resource = "https://graph.microsoft.com/"
6. $URL = "https://graph.microsoft.com/v1.0/teams/daba3aa7-6622-4f75-8e27-a9587c6642dc/installedApps/?`$expand=teamsAppDefinition"
9. $tokenBody = @{
10. Grant_Type = "client_credentials"
11. Scope = "https://graph.microsoft.com/.default"
12. Client_Id = $clientId
13. Client_Secret = $clientSecret
14. }
16. $tokenResponse = Invoke-RestMethod -Uri "https://login.microsoftonline.com/$TenantName/oauth2/v2.0/token" -Method POST -Body $tokenBody
17. $result=Invoke-RestMethod -Headers @{Authorization = "Bearer $($tokenResponse.access_token)"} -Uri $URL -Method Get
18. ($result| Select-Object value).Value.teamsAppDefinition
Open PowerShell window. Navigate to the folder path where the script file is saved.
Execute the following script.

.\ListAllApps.ps1

Thus, in this article, you saw how to retrieve the list of apps installed in the specified team using Microsoft Teams Graph API in PowerShell.