fix

app.py

@@ -206,7 +206,7 @@ def _stream_chat_response(history: list, system_prompt: str, transcript: str = N
         # Don't do anything if there's no history and no transcript
         return
 
-    if transcript.startswith("Error"):
+    if transcript and transcript.startswith("Error"):
         return
     # Include transcript as first user message if provided, but don't display it
     messages = [{"role": "system", "content": system_prompt}]

requirements.txt

@@ -3,4 +3,7 @@ gradio-client>=1.10.3
 modal>=1.0.3
 openai>=1.86.0
 python-dotenv>=1.1.0
-yt-dlp>=2025.6.9 
+yt-dlp>=2025.6.9
+tavily-python>=0.3.3
+anthropic>=0.25.0
+mcp>=0.0.1