Update app.py

app.py

@@ -19,8 +19,13 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
     return "What magic will you build ?"
 
 @tool
-def currency_converter(amount:float, from_currency:str, to_currency:str) -> str:
-    """Convert between currencies using real-time exchange rates"""
+def currency_converter(amount: float, from_currency: str, to_currency: str) -> str:
+    """Convert between currencies using real-time exchange rates
+    Args:
+        amount: The amount to convert
+        from_currency: Currency code to convert from (e.g. USD)
+        to_currency: Currency code to convert to (e.g. EUR)
+    """
     try:
         url = f"https://api.exchangerate-api.com/v4/latest/{from_currency}"
         response = requests.get(url)