Tutorial and Tool written by Troy Dai (Twitter @troy_dai) with assistance from Rick Anderson (Twitter @RickAndMSFT) Search for “asp.net web api routing” on stackoverflow, you’ll find many questions. How exactly does Web API routing work? Why doesn’t my route work? Why is this action not invoked? Often time it is difficult to debug route. To address this issue I wrote this tool named “ASP.NET Web API Route Debugger” trying to make Web API developers’ lives a bit easier.