diff --git a/libs/agent/agent/providers/omni/clients/oaicompat.py b/libs/agent/agent/providers/omni/clients/oaicompat.py
index 6a95896a..b15515fd 100644
--- a/libs/agent/agent/providers/omni/clients/oaicompat.py
+++ b/libs/agent/agent/providers/omni/clients/oaicompat.py
@@ -93,7 +93,14 @@ class OAICompatClient(BaseOmniClient):
         """
         headers = {"Content-Type": "application/json", "Authorization": f"Bearer {self.api_key}"}
 
-        final_messages = [{"role": "system", "content": system}]
+        final_messages = [
+            {
+                "role": "system", 
+                "content": [
+                    { "type": "text", "text": system }
+                ]
+            }
+        ]
 
         # Process messages
         for item in messages:
@@ -117,7 +124,10 @@ class OAICompatClient(BaseOmniClient):
                     else:
                         message = {
                             "role": item["role"],
-                            "content": [{"type": "text", "text": item["content"]}],
+                            "content": [{
+                                "type": "text", 
+                                "text": item["content"]
+                            }],
                         }
                     final_messages.append(message)
             else:
diff --git a/libs/agent/agent/providers/uitars/loop.py b/libs/agent/agent/providers/uitars/loop.py
index 84393bd2..71d2c739 100644
--- a/libs/agent/agent/providers/uitars/loop.py
+++ b/libs/agent/agent/providers/uitars/loop.py
@@ -232,8 +232,11 @@ class UITARSLoop(BaseLoop):
                     if self.client is None:
                         raise RuntimeError("Failed to initialize client")
 
-                # Convert messages to UI-TARS format
+                # Get messages in standard format from the message manager
+                self.message_manager.messages = messages.copy()
                 prepared_messages = self.message_manager.get_messages()
+                
+                # Convert messages to UI-TARS format
                 uitars_messages = self.to_uitars_format(prepared_messages)
                 
                 # Log request