I do something very similar to what @tjaskula is doing. I approve!

gistfile1.cs

public class ConfirmationModule : NancyModule
{        
  	public ConfirmationModule(IBus bus)
	{		

		Get["confirm/done"] = p =>
		{
			return View["ConfirmationDone"];
		};

		Post["confirm/{token}"] = p =>
		{
			Guid parsedToken;
			if (Guid.TryParse(p.token, out parsedToken))
			{
				bus.ExecuteCommand(new ConfirmQueryCommand(p.token));

				return Response.AsRedirect("done");
			}

			return HttpStatusCode.NotFound;
		};
	}
}