Generate WebAPI documentation in swagger json format

You need to integrate Swagger.NET into your project so that you end up with the following controller:

public class SwaggerController : ApiController { /* snip */ }

and you should also have the following route registered:

context.Routes.MapHttpRoute (
name : "Swagger",
routeTemplate: "api/swagger"
defaults: new
{
  controller = "Swagger",
  action = "Get",
});

assuming that is working you should be able to call /api/swagger and get something like the following:

{
  apiVersion: "4.0.0.0",
  swaggerVersion: "2.0",
  basePath: "http://localhost:5555",
  resourcePath: null,
  apis: [
  {
    path: "/api/docs/Values",
    description: "No Documentation Found.",
    operations: [ ]
  },
  {
    path: "/api/docs/Home",
    description: "No Documentation Found.",
    operations: [ ]
  }
]

}

then in SwaggerUI/index.html you'll want to update the discoveryUrl:

<script type="text/javascript">
    $(function () {
        window.swaggerUi = new SwaggerUi({
            discoveryUrl: "http://localhost:5555/api/swagger",
            apiKey:"",
            dom_id:"swagger-ui-container",
            supportHeaderParams: false,
            supportedSubmitMethods: ['get', 'post', 'put']
        });

        window.swaggerUi.load();
    });
</script>