How to add a sensitivity label to SharePoint document library using GraphAPI

Question

In the SharePoint UI, I can configure a default sensitivity label for a document library by going to Library Settings → Default sensitivity labels and selecting a label (e.g., General \ Anyone (unrestricted)). This applies the label automatically to all newly created or edited Office files within that library.

I'd like to automate this via the Microsoft Graph API instead of doing it manually through the UI.

I am unable to find Graph API request URL to run the API

Answer 1

There is currently no Microsoft Graph API that can configure the Default sensitivity label for a SharePoint document library.

That library-level setting (Library Settings → Default sensitivity labels) is not exposed via Graph. Graph only supports:

• Reading sensitivity labels
• Assigning labels to individual files/items (for example, assignSensitivityLabel)

The SharePoint UI sets this using a SharePoint list property called DefaultSensitivityLabelForLibrary, which is only configurable via:

• SharePoint REST API, or
• PnP PowerShell (Set-PnPList -DefaultSensitivityLabelForLibrary)

If you need to automate this today, you must use SharePoint REST or PnP. Graph cannot do this at the library level at this time.

https://learn.microsoft.com/en-us/graph/api/resources/security-sensitivitylabel?view=graph-rest-1.0