diff --git a/a8/xobject.cc b/a8/xobject.cc
index aaab704..ed540ea 100644
--- a/a8/xobject.cc
+++ b/a8/xobject.cc
@@ -429,6 +429,15 @@ namespace a8
         }
     }
 
+    void XObject::GetKeys(std::vector<std::string>& keys)
+    {
+        if (type_ == a8::XOT_OBJECT) {
+            for (auto& pair : *value_.object_value) {
+                keys.push_back(pair.first);
+            }
+        }
+    }
+
     void XObject::JsonValueToXObject(Json::Value& json_val, a8::XObject& xobject)
     {
         Json::ValueType val_type = json_val.type();
diff --git a/a8/xobject.h b/a8/xobject.h
index 566b35e..ce847c3 100644
--- a/a8/xobject.h
+++ b/a8/xobject.h
@@ -56,6 +56,7 @@ namespace a8
         std::string ToJsonStr();
         void ToUrlEncodeStr(std::string& data);
         void ToKVList(std::map<std::string, std::string>& kv_list);
+        void GetKeys(std::vector<std::string>& keys);
 
     private:
         void JsonValueToXObject(Json::Value& json_val, a8::XObject& xobject);