The one thing that the Xelshok strive for is knowledge. They are a collective of intelligent beings driven by the will to learn more about other races and the universe itself. The Xelshok are happy to share their knowledge with anyone contacting them as long as they feel they get something in return. Although their weaponry could be very advanced they refrain from taking any aggressive action.
The player may gain technologies if his relationship towards the Xelshok is very good.