diff --git a/lib/model-helper.js b/lib/model-helper.js
index ab532bb..7108341 100644
--- a/lib/model-helper.js
+++ b/lib/model-helper.js
@@ -3,19 +3,8 @@
 /**
  * Module dependencies.
  */
-
-/**
- * Constants
- */
-
- // Keys that are different between LDL and Swagger
- var KEY_TRANSLATIONS = {
-   // LDL : Swagger
-   'doc': 'description',
-   'default': 'defaultValue',
-   'min': 'minimum',
-   'max': 'maximum'
- };
+var _cloneDeep = require('lodash.clonedeep');
+var translateKeys = require('./translate-keys');
 
 /**
  * Export the modelHelper singleton.
@@ -32,12 +21,14 @@ var modelHelper = module.exports = {
     var name = def.name;
 
     var required = [];
+    // Don't modify original properties.
+    var properties = _cloneDeep(def.properties);
 
     // Iterate through each property in the model definition.
     // Types are defined as constructors (e.g. String, Date, etc.)
     // so we convert them to strings.
     Object.keys(def.properties).forEach(function(key) {
-      var prop = def.properties[key];
+      var prop = properties[key];
 
       // Eke a type out of the constructors we were passed.
       prop.type = getPropType(prop.type);
@@ -53,23 +44,13 @@ var modelHelper = module.exports = {
       }
 
       // Change mismatched keys.
-      Object.keys(KEY_TRANSLATIONS).forEach(function(LDLKey){
-        var val = prop[LDLKey];
-        if (val) {
-          // Should change in Swagger 2.0
-          if (LDLKey === 'min' || LDLKey === 'max') {
-            val = String(val);
-          }
-          prop[KEY_TRANSLATIONS[LDLKey]] = val;
-        }
-        delete prop[LDLKey];
-      });
+      prop = translateKeys(prop);
     });
 
     var out = {};
     out[name] = {
       id: name,
-      properties: def.properties,
+      properties: properties,
       required: required
     };
     return out;
diff --git a/lib/route-helper.js b/lib/route-helper.js
index 7010647..ff01fb6 100644
--- a/lib/route-helper.js
+++ b/lib/route-helper.js
@@ -6,6 +6,7 @@
 
 var debug = require('debug')('loopback-explorer:routeHelpers');
 var _cloneDeep = require('lodash.clonedeep');
+var translateKeys = require('./translate-keys');
 
 /**
  * Export the routeHelper singleton.
@@ -94,6 +95,10 @@ function doRouteParameterHacks(route, classDef) {
     }
   }
 
+  // Translate LDL keys to Swagger keys.
+  route.accepts = (route.accepts || []).map(translateKeys);
+  route.returns = (route.returns || []).map(translateKeys);
+
   debug('route %j', route);
 
   return route;
@@ -176,6 +181,9 @@ function acceptToParameter(route) {
       description: accepts.description,
       type: accepts.model || prepareDataType(accepts.type),
       required: !!accepts.required,
+      defaultValue: accepts.defaultValue,
+      minimum: accepts.minimum,
+      maximum: accepts.maximum,
       allowMultiple: false
     };
 
diff --git a/lib/translate-keys.js b/lib/translate-keys.js
new file mode 100644
index 0000000..20bb729
--- /dev/null
+++ b/lib/translate-keys.js
@@ -0,0 +1,35 @@
+'use strict';
+
+/**
+ * Module dependencies.
+ */
+
+// Keys that are different between LDL and Swagger
+var KEY_TRANSLATIONS = {
+  // LDL : Swagger
+  'doc': 'description',
+  'default': 'defaultValue',
+  'min': 'minimum',
+  'max': 'maximum'
+};
+
+/**
+ * Correct key mismatches between LDL & Swagger.
+ * Will modify original object.
+ * @param  {Object} object Object on which to change keys.
+ * @return {Object}        Translated object.
+ */
+module.exports = function translateKeys(object) {
+  Object.keys(KEY_TRANSLATIONS).forEach(function(LDLKey){
+    var val = object[LDLKey];
+    if (val) {
+      // Should change in Swagger 2.0
+      if (LDLKey === 'min' || LDLKey === 'max') {
+        val = String(val);
+      }
+      object[KEY_TRANSLATIONS[LDLKey]] = val;
+    }
+    delete object[LDLKey];
+  });
+  return object;
+};