curl http://127.0.0.1:3000/api.json

api.json

{
   "schemes" : [
      "http"
   ],
   "paths" : {
      "/echo" : {
         "post" : {
            "x-mojo-name" : "echo",
            "responses" : {
               "200" : {
                  "schema" : {
                     "type" : "object"
                  },
                  "description" : "Echo response"
               }
            },
            "parameters" : [
               {
                  "schema" : {
                     "type" : "object"
                  },
                  "name" : "body",
                  "in" : "body"
               }
            ]
         }
      }
   },
   "swagger" : "2.0",
   "info" : {
      "title" : "Pets",
      "version" : "0.8"
   },
   "basePath" : "/api"
}