Update app.py

app.py

@@ -37,6 +37,8 @@ def get_current_time_in_timezone(timezone: str) -> str:
 @tool
 def perform_web_search(query: str) -> str:
     """A tool that performs a web search and returns the result
+    Args:
+        query: a tring containing the user query that needs to be searched over the web
     """
     search_tool = DuckDuckGoSearchTool()
     result = search_tool(query)