Program.cs

using System;
using Nancy;
using Nancy.Hosting.Self;

namespace ConsoleApplication3
{
    class Program
    {
        static void Main(string[] args)
        {
            using (var host = new NancyHost(new Uri("http://localhost:1234")))
            {
                host.Start();
                Console.ReadKey();
            }

        }
    }

    public class TestBootstrapper : DefaultNancyBootstrapper
    {
        protected override void ApplicationStartup(Nancy.TinyIoc.TinyIoCContainer container, Nancy.Bootstrapper.IPipelines pipelines)
        {
            base.ApplicationStartup(container, pipelines);
        }
    }

    public class TestModule : NancyModule
    {
        public TestModule()
            : base("/")
        {
            Get["/test"] = _ =>
            {
                var response = Response.AsText("test", "application/json");
                response.StatusCode = HttpStatusCode.InternalServerError;
                return response;
            };
        }
    }
}