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// graph-permissions · CustomTags

CustomTags.ReadWrite.AllMicrosoft Graph permission · High risk

Read and write custom tags data, without a signed-in user

Application permission

High risk

Read and write custom tags data. Read and write custom tags data, without a signed-in user

ID2f503208-e509-4e39-974c-8cc16e5785c9
ConsentAlways needs admin consent
RiskCan change data across the whole tenant.

Delegated permission

High risk

Read and write custom tags data. Read and write custom tags data on behalf of the signed-in user

ID2f1bbe0a-f34b-4efb-9edb-8db8dcb50eca
ConsentNeeds admin consent
RiskCan change data across the whole tenant.

Grant it to an app

In the portal: App registrations › your app › API permissions › Add a permission › Microsoft Graph › Application permissions, then grant admin consent. Or with Graph PowerShell:

powershell5 lines
Connect-MgGraph -Scopes "Application.Read.All", "AppRoleAssignment.ReadWrite.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
$app   = Get-MgServicePrincipal -Filter "appId eq '<your app's client id>'"
New-MgServicePrincipalAppRoleAssignment -ServicePrincipalId $app.Id `
    -PrincipalId $app.Id -ResourceId $graph.Id -AppRoleId "2f503208-e509-4e39-974c-8cc16e5785c9"

Ask for it when signing in

Delegated permissions act as the signed-in user, so the app can never do more than that user can.

powershell1 line
Connect-MgGraph -Scopes "CustomTags.ReadWrite.All"

Which apps already have it?

powershell6 lines
# Apps that hold CustomTags.ReadWrite.All as an application permission
Connect-MgGraph -Scopes "Application.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgServicePrincipalAppRoleAssignedTo -ServicePrincipalId $graph.Id -All |
    Where-Object AppRoleId -eq "2f503208-e509-4e39-974c-8cc16e5785c9" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime
powershell6 lines
# Apps with delegated consent for CustomTags.ReadWrite.All
Connect-MgGraph -Scopes "Application.Read.All", "Directory.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgOauth2PermissionGrant -All |
    Where-Object { $_.ResourceId -eq $graph.Id -and ($_.Scope -split " ") -contains "CustomTags.ReadWrite.All" } |
    Select-Object ClientId, ConsentType, PrincipalId

Other CustomTags permissions

Check every app in your tenant → Permission explainer

Sources