Extend PowerShell scripts that use app-only authentication with more Microsoft Graph APIs

In this article, you add your own Microsoft Graph capabilities to the application you created in Build PowerShell scripts with Microsoft Graph. For example, you might want to add a code snippet from Microsoft Graph documentation or Graph Explorer, or code that you created.

Choose an API

Find an API in Microsoft Graph you'd like to try. For example, the List groups API. You can use one of the examples in the API documentation, customize an API request in Graph Explorer and use the generated snippet, or use the Find-MgGraphCommand command to find the corresponding command.

For example, the API endpoint to list groups is GET /groups. You can use this information to find the corresponding PowerShell command.

PS > Find-MgGraphCommand -Uri "/groups" -Method "GET"

   APIVersion: v1.0

Command     Module Method URI     OutputType           Permissions
-------     ------ ------ ---     ----------           -----------
Get-MgGroup Groups GET    /groups IMicrosoftGraphGroup {Directory.Read.All, Directory.ReadWrite.All, Group.Read.All, G…

   APIVersion: beta

Command     Module Method URI     OutputType            Permissions
-------     ------ ------ ---     ----------            -----------
Get-MgGroup Groups GET    /groups IMicrosoftGraphGroup1 {Directory.Read.All, Directory.ReadWrite.All, Group.Read.All, …

The output indicates that the Get-MgGroup command is the corresponding command.

Configure permissions

Check the Permissions section of the reference documentation for your chosen API to see which authentication methods are supported. Some APIs don't support app-only, for example.

To call an API with app-only authentication (if the API supports it), add the required permission scope in the Microsoft Entra admin center. Be sure to disconnect and reconnect using app-only permission.

Run the command

Now that you're connected with the required permissions, run your chosen command.

Related content

Now that you have a working app that calls Microsoft Graph, you can experiment and add new features.

• Learn how to use user (delegated) authentication with the Microsoft Graph PowerShell SDK.
• Visit the Overview of Microsoft Graph to see all of the data you can access with Microsoft Graph.