Update app.py

app.py

@@ -7,16 +7,22 @@ from tools.final_answer import FinalAnswerTool
 
 from Gradio_UI import GradioUI
 
-# Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return type
-    #Keep this format for the description / args / args description but feel free to modify the tool
-    """A tool that does nothing yet 
+def calc_expression_dummy(expression: str) -> str:
+    """A tool that (pretends to) evaluate an arithmetic expression.
+
     Args:
-        arg1: the first argument
-        arg2: the second argument
+        expression: A string representing an arithmetic expression (e.g., '1 + 2*(3-4)').
+
+    Returns:
+        A result string.
     """
-    return "What magic will you build ?"
+    try:
+        # NOTE: Intentionally NOT evaluating `expression` (dummy tool for agent plumbing tests).
+        dummy_value = 1234567890
+        return f"Calc result for '{expression}': {dummy_value}"
+    except Exception as e:
+        return f"Error in calculator tool: {str(e)}"
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: