Update agent/agent.py

agent/agent.py

@@ -277,7 +277,15 @@ async def stream_agent(
         yield _make_sse("tool_start", step, f"Running {action}...", action, time.time() - step_start)
 
         # FIX: Pass thought to preserve model reasoning in conversation history
-        result, tool_elapsed = await _execute_tool_and_update_history(action, tool_input, messages, thought)
+        tool_start = time.time()
+        result = await _dispatch_tool(action, tool_input)
+        tool_elapsed = time.time() - tool_start
+
+        # FIX: Only add user message — NO assistant message with JSON
+        messages.append({
+            "role": "user",
+            "content": f"[Tool Result from {action}]\n{result}\n\nContinue with next JSON action or finish."
+        })
 
         display = result[:1800] + "..." if len(result) > 1800 else result
         yield _make_sse("result", step, display, action, tool_elapsed)