Update app.py

app.py

@@ -9,14 +9,43 @@ 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 
+from langchain.agents import tool
+import requests
+
+@tool
+def get_country_capital(country_name: str) -> str:
+    """
+    A tool that retrieves the capital of a country based on its name
+    from the CountriesNow API.
+    
     Args:
-        arg1: the first argument
-        arg2: the second argument
+        country_name: The name of the country (e.g., "Nigeria").
+    
+    Returns:
+        A string describing the capital or an error message if something goes wrong.
     """
-    return "What magic will you build ?"
+    url = "https://countriesnow.space/api/v0.1/countries/capital"
+    payload = {"country": country_name}
+
+    try:
+        response = requests.post(url, json=payload)
+        
+        if response.status_code != 200:
+            return f"API call failed with status code {response.status_code}."
+
+        data = response.json()
+        
+        if data.get("error") is False:
+            # Extract the capital from the response
+            capital = data["data"].get("capital", "No capital found.")
+            return f"The capital of {country_name.capitalize()} is: {capital}"
+        else:
+            # If the API returned an error message
+            return f"Error returned by the API: {data.get('msg')}"
+
+    except Exception as e:
+        return f"An error occurred: {str(e)}"
+
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: