M365 PowerShell

Using Find-GraphMgPermission in Graph PowerShell

This guide explains how to use the Find-MgGraphPermission cmdlet in Microsoft Graph PowerShell to search for Microsoft Graph API permissions. Learn how to discover required permissions with practical examples.

The Find-MgGraphPermission cmdlet in Microsoft Graph PowerShell is used to search for Microsoft Graph permissions. It helps identify the permissions that are required to access various Microsoft Graph resources or perform specific operations. This cmdlet is particularly useful when you need to know which permissions to request for your application in Azure Active Directory.

Prerequisites

You should install Microsoft Graph PowerShell module by running Install-Module Microsoft.Graph -Scope CurrentUser command.
To execute Find-GraphMgPermission cmdlet, you need 'Directory.Read.All' Graph API permission. This permission could be either delegated or application level permission.

Basic Syntax

Here’s the basic syntax of the Find-GraphMgPermission: Find-MgGraphPermission [-SearchString] <String> [-ExactMatch] [-PermissionType <String> ] [-Online] [-ProgressAction <ActionPreference> ] [<CommonParameters > ] ]

Key Parameters:

-SearchString Specifies the string to search for within the permissions. This is a required parameter.
-ExactMatch: Indicates whether to search for an exact match of the search string.
-PermissionType: Specifies the type of permission to search for (e.g., Delegated, Application).
-Online: Ensures the latest permissions are fetched from the online endpoint.
-ProgressAction: Specifies the action preference for handling progress updates.

Find Permissions Related to User Resource

This command searches for permissions that include the word "user". It fetches both delegated and application level permissions need for querying user entity or resource.

Find Delegated Permissions Related to Calendar Resource

This command searches for delegated permissions that include the word "calendar". It fetches only the delegated permission needed for quering the calendar resource.

Find Application Permissions Related to Mail Resource

This command searches for application permissions that include the word "mail". It fetches only the application permission needed for quering the mail resource.

Find Exact Match for a Specific Permission

If you are sure about the permission you are searching for, then you can pass the permission name to -SearchString and look for the -ExactMatch as follows. You'll get back the permission type, what it offers, and whether admin consent is required for the permission.

Best Practices While Using Find-MgGraphPermission

Here are some best practices you can follow while using ind-MgGraphPermission cmdlet:

Start with Broad Searches: Use general search terms without -ExactMatch to discover a wide range of relevant permissions.
Narrow Down Results: If you get too many results, use -ExactMatch parameter for precise matches
Specify Permission Type: Use the -PermissionType parameter to filter permissions by type (Delegated or Application).
Check Online for Latest Permissions: Use the -Online parameter to ensure you are retrieving the most up-to-date permissions.
Combine Parameters for Precision: Combine multiple parameters to refine your search and get more relevant results.
Review Documentation: Always refer to Microsoft Graph permissions documentation for detailed descriptions and updates on permissions.

Frequently Asked Questions

1. What is Find-MgGraphPermission used for?

Find-MgGraphPermission is a Microsoft Graph PowerShell cmdlet used to discover the permissions required for specific Microsoft Graph API endpoints.

2. How can I export permission details to a CSV file?

Use this script to export permissions to a CSV file:

$Permissions = Find-MgGraphPermission -Uri "/v1.0/users"
$Permissions | Select-Object PermissionType, Value, Description | Export-Csv -Path "C:\Path\To\Permissions.csv" -NoTypeInformation

3. What permissions are required to discover API permissions?

You need the Directory.Read.All or Directory.ReadWrite.All permission in Microsoft Graph PowerShell. Ensure these permissions are granted in Azure AD.

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