using System;

using ServiceStack;

public class Program

{

    public static void Main()

    {

        var helgi = new bla { x ="sp34345345" };

        var route = (RouteAttribute)Attribute.GetCustomAttribute(helgi.GetType(), typeof(RouteAttribute));

        Console.WriteLine(route.Path);

    }

}

​

[Route("/api/{x}", "GET")]

public class bla

{

    public string x { get; set; }

}