Source Code Data Query Enterprise Extension exposed in the client API

Hi,

I need to perform a Source Code Data Query to ensure that I do not have dublicate enterprise assets in my repository. It seems however, that this is not exposed through the API. Can you please confirm this and perhaps point me to another solution? We are running CLM 5.0.1, but I have checked the client APIs in the RC version 6 also, but it seems to contain only a few EE possibilities.

I need the uniqueness across my repository(ies) due to the load libraries setup on z.