Update the tool description

Signed-off-by: Aivin V. Solatorio <avsolatorio@gmail.com>

services.py

@@ -253,13 +253,13 @@ def get_wdi_data(
 
 
 def used_indicators(indicator_ids: list[str] | str) -> list[str]:
-    """Returns the list of indicator ids (idno) that have been used by the LLM.
+    """The LLM can use this tool to let the user know which indicators it has used in generating its response.
 
     Args:
-        indicator_ids: A list of indicator ids (idno) that have been used by the LLM.
+        indicator_ids: A list or comma-separated list of indicator ids (idno) that have been used by the LLM.
 
     Returns:
-        A list of indicator ids (idno) that have been used by the LLM.
+        A list of indicator ids (idno) that have been used by the LLM. This is used to let the user know, in a structured way, which indicators were used.
     """
 
     if isinstance(indicator_ids, str):

wdi_mcp_gradio.py

@@ -71,13 +71,13 @@ def get_wdi_data(indicator_id: str, country_codes_str: str, date: str, per_page:
 
 
 def used_indicators(indicator_ids: list[str] | str):
-    """Returns the list of indicator ids (idno) that have been used by the LLM.
+    """The LLM can use this tool to let the user know which indicators it has used in generating its response.
 
     Args:
-        indicator_ids: A list of indicator ids (idno) that have been used by the LLM.
+        indicator_ids: A list or comma-separated list of indicator ids (idno) that have been used by the LLM.
 
     Returns:
-        A list of indicator ids (idno) that have been used by the LLM.
+        A list of indicator ids (idno) that have been used by the LLM. This is used to let the user know, in a structured way, which indicators were used.
     """
 
     return services.used_indicators(indicator_ids=indicator_ids)