Update app.py

app.py

@@ -80,7 +80,10 @@ class BasicAgent:
             final_answer = FunctionTool.from_defaults(
                 name="final_answer",
                 fn=final_answer_tool,
-                description="Returns the final answer to the user as a string."
+                description = 
+                    '''
+                    "Use this ONLY at the end. You must pass a string containing ONLY the final answer, with no explanations or formatting. If the answer is a list, pass it as a plain comma-separated string. Example: 'cornstarch, granulated sugar, freshly squeezed lemon juice, ripe strawberries, vanilla extract'"
+                    '''
             )
 
             is_food_tool = FunctionTool.from_defaults(