Thank you your help. I was able to figure out how to use my original solution after looking into what an "out" actually does.

And of course, after trying to figure out the rest of this solution, my manager opted for a solution in the web config instead, which actually makes more sense for our project.

Although, for future reference, it would be nice to have something in the API that would be something like UrlExists(url) and have it spit out a boolean. Would make things so much easier.