Sample of how you could get rid of the magic string

gistfile1.cs

    using Nancy;
    using Nancy.Extensions;

    public class Home : NancyModuleBase
    {
        public Home()
        {
            Get["/"] = parameters => {
                return "Hello";
            };

            Get["/home"] = parameters => {
                return Response.AsRedirect(Url.Homepage());
            };
        }
    }

    public abstract class NancyModuleBase : NancyModule
    {
        protected NancyModuleBase()
            : this(string.Empty)
        {
        }

        protected NancyModuleBase(string modulePath)
            : base(modulePath)
        {
            this.Url = new Url(this.Context);
        }

        public Url Url { get; private set; }
    }

    public class Url
    {
        private readonly NancyContext context;

        public Url(NancyContext context)
        {
            this.context = context;
        }

        public string Homepage()
        {
            return this.context.ToFullPath("~/");
        }
    }