I think that's exactly what the SDK is for. I am doing something similar with a custom ticketing app. When a user views a ticket, the ticket queries Solarwinds using SWQL for the node status as well as other information such as location and machine type and displays it in the ticket. It's seamless to the end user. Check out the documentation that comes with the SDK. It has examples for several languages. You can also test your SWQL queries with SWQL Studio.
I have seen tdanner reply to several of the SDK threads on Thwack and I have used his information to help me get this working with my PHP app.
Ro
