Update app.py

app.py

@@ -9,13 +9,21 @@ 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
+def my_custom_tool(amount_uah: float)-> 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 
+    """Converts the amount in hryvnia (UAH) to dollars (USD) at the current NBU exchange rate.
     Args:
-        arg1: the first argument
-        arg2: the second argument
+        amount_uah (float): Amount in UAH.
+
     """
+        response = requests.get("https://bank.gov.ua/NBUStatService/v1/statdirectory/exchange?json")
+        response.raise_for_status()
+        data = response.json()
+        
+        usd_rate = next(item['rate'] for item in data if item['cc'] == 'USD')
+
+        return f"{uah_amount} UAH = {round(amount_uah / usd_rate, 2} USD" )
+    
     return "What magic will you build ?"
 
 @tool