Datasource SDT and REST API

Thank you for your response. My goal is to add an SDT to every datasource matching a text pattern, as we’ve named them appropriately (they’re all custom datasources).

The devices/resources aren’t relevant, as I want the SDT to apply globally, just to the specific datasources I identify. So I can’t start with a device group, unless I start with the root device group, which seems like a huge overhead. Is there a more direct way to simply SDT specific datasources globally?