diff --git a/zeno/include/zeno/funcs/LiterialConverter.h b/zeno/include/zeno/funcs/LiterialConverter.h
index 47ddb9d114..d0c7690900 100644
--- a/zeno/include/zeno/funcs/LiterialConverter.h
+++ b/zeno/include/zeno/funcs/LiterialConverter.h
@@ -23,6 +23,22 @@ inline bool objectIsLiterial(std::shared_ptr<IObject> const &ptr) {
     }
 }
 
+template <class T>
+inline bool objectIsRawLiterial(std::shared_ptr<IObject> const &ptr) {
+    if constexpr (std::is_base_of_v<IObject, T>) {
+        return dynamic_cast<T *>(ptr.get());
+    } else if constexpr (std::is_same_v<std::string, T>) {
+        return dynamic_cast<StringObject *>(ptr.get());
+    } else if constexpr (std::is_same_v<NumericValue, T>) {
+        return dynamic_cast<NumericObject *>(ptr.get());
+    } else {
+        auto p = dynamic_cast<NumericObject *>(ptr.get());
+        return p && std::visit([&] (auto const &val) -> bool {
+            return std::is_same_v<T, std::decay_t<decltype(val)>>;
+        }, p->value);
+    }
+}
+
 template <class T>
 inline auto objectToLiterial(std::shared_ptr<IObject> const &ptr, std::string const &msg = "objectToLiterial") {
     if constexpr (std::is_base_of_v<IObject, T>) {
diff --git a/zeno/src/nodes/JsonProcess.cpp b/zeno/src/nodes/JsonProcess.cpp
index 0518ab6e3a..da433aaf71 100644
--- a/zeno/src/nodes/JsonProcess.cpp
+++ b/zeno/src/nodes/JsonProcess.cpp
@@ -13,7 +13,7 @@
 #include <tinygltf/json.hpp>
 #include <zeno/zeno.h>
 
-using Json = nlohmann::json;
+using Json = nlohmann::ordered_json;
 
 namespace zeno {
 struct JsonObject : IObjectClone<JsonObject> {
@@ -64,37 +64,37 @@ ZENDEFNODE(WriteJson, {
 });
 static Json iobject_to_json(std::shared_ptr<IObject> iObject) {
     Json json;
-    if (objectIsLiterial<int>(iObject)) {
+    if (objectIsRawLiterial<int>(iObject)) {
         json = objectToLiterial<int>(iObject);
     }
-    else if (objectIsLiterial<vec2i>(iObject)) {
+    else if (objectIsRawLiterial<vec2i>(iObject)) {
         auto value = objectToLiterial<vec2i>(iObject);
         json = { value[0], value[1]};
     }
-    else if (objectIsLiterial<vec3i>(iObject)) {
+    else if (objectIsRawLiterial<vec3i>(iObject)) {
         auto value = objectToLiterial<vec3i>(iObject);
         json = { value[0], value[1], value[2]};
     }
-    else if (objectIsLiterial<vec4i>(iObject)) {
+    else if (objectIsRawLiterial<vec4i>(iObject)) {
         auto value = objectToLiterial<vec4i>(iObject);
         json = { value[0], value[1], value[2], value[3]};
     }
-    else if (objectIsLiterial<float>(iObject)) {
+    else if (objectIsRawLiterial<float>(iObject)) {
         json = objectToLiterial<float>(iObject);
     }
-    else if (objectIsLiterial<vec2f>(iObject)) {
+    else if (objectIsRawLiterial<vec2f>(iObject)) {
         auto value = objectToLiterial<vec2f>(iObject);
         json = { value[0], value[1]};
     }
-    else if (objectIsLiterial<vec3f>(iObject)) {
+    else if (objectIsRawLiterial<vec3f>(iObject)) {
         auto value = objectToLiterial<vec3f>(iObject);
         json = { value[0], value[1], value[2]};
     }
-    else if (objectIsLiterial<vec4f>(iObject)) {
+    else if (objectIsRawLiterial<vec4f>(iObject)) {
         auto value = objectToLiterial<vec4f>(iObject);
         json = { value[0], value[1], value[2], value[3]};
     }
-    else if (objectIsLiterial<std::string>(iObject)) {
+    else if (objectIsRawLiterial<std::string>(iObject)) {
         json = objectToLiterial<std::string>(iObject);
     }
     else if (auto list = std::dynamic_pointer_cast<ListObject>(iObject)) {
@@ -415,6 +415,29 @@ ZENDEFNODE(JsonGetString, {
         "deprecated"
     },
 });
+
+struct JsonGetKeys : zeno::INode {
+    virtual void apply() override {
+        auto json = get_input<JsonObject>("json");
+        auto list = std::make_shared<ListObject>();
+        for (auto& [key, _] : json->json.items()) {
+            list->arr.emplace_back(std::make_shared<zeno::StringObject>(key));
+        }
+        set_output2("keys", list);
+    }
+};
+ZENDEFNODE(JsonGetKeys, {
+    {
+        {"json"},
+    },
+    {
+        "keys",
+    },
+    {},
+    {
+        "json"
+    },
+});
 struct JsonGetTypeName : zeno::INode {
     virtual void apply() override {
         auto json = get_input<JsonObject>("json");