Damn, thanks for pointing me in that direction. It's exactly what I've been looking for.

Technically, I implemented some of that stuff myself because I needed REST client that would work with PCLs and be a bit 'nicer' to use than just juggling strings/routes everywhere, so using annotations and wrapping Microsoft's HttpClient was obvious and relatively easy way out.

Anyway, I'll probably just phase out my own solution and start using the library.

[EDIT]

After checking it out, RefitStubs.cs file seems a little bit clunky, but the library as a whole looks solid enough. I'll look further into it.

RefitStubs is necessary because on certain platforms (iOS, WinRT), you cannot JIT and therefore can't use something like Castle Core to generate a class

I figured as much. Unfortunately there's no Emit for AOT where you could do something like: https://github.com/jonwagner/Insight.Database/blob/master/In...

On the other hand, I wonder if it wouldn't be easier to ship a T4 template? I know for sure that would integrate with VS (both the IDE and build process) without any issues, not sure about Xamarin Studio...