API to get lists of threads and media uploads for the Group by ApplicationKey

First, you really need to upgrade as you need to be on 10.3 to be on a supported product.   The issue is application key is only unique within the scope of the group so if you are storing it, you really need to be storing along with a groupId, and in fact I would advise against using anything other than an identifier as application keys are editable by end users, Ids are not so you have both a uniqueness issue and a data integrity issue.

Patrick - thanks for your reply.

Would be nice to hear the answer to my actual question: is it possible to get those lists via Telligent API by AppKey? 

No, the apis do not support this because as I said, they are not unique without the group Id, and while you could possibly use search to do this, because you don't know the group Id you cannot reconcile the list to the individual application.   For example, it is very common to have multiple forums with the application key "forum", having a thread and an app key is not enough information to tell you which of the X number of forums potentially returned it belongs to.

No, the apis do not support this because as I said, they are not unique without the group Id, and while you could possibly use search to do this, because you don't know the group Id you cannot reconcile the list to the individual application.   For example, it is very common to have multiple forums with the application key "forum", having a thread and an app key is not enough information to tell you which of the X number of forums potentially returned it belongs to.

Thanks.