Aggiungi descrizione del parametro della funzione invert_sentence

app.py

@@ -12,7 +12,13 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 
 @tool
 def invert_sentence(sentence: str) -> str:
-    """ Inverts the order of all characters in a sentence. """
+    """
+    Inverts the order of all characters in a sentence.
+    Args:
+        sentence (str): The sentence to invert.
+    Returns:
+        str: The sentence with characters in reverse order.
+    """
     return sentence[::-1]
 
 # --- First Agent Definition ---