You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "get_channel_description", "description": "Fetches the channel description from the Twitch API using the provided user ID.", "parameters": {"userid": {"description": "The ID of the user whose channel description is to be fetched.", "type": "str", "default": "julie"}}}]
What is the description of the channel for the user 'vwxyz'?
user
assistant
[{"name": "get_channel_description", "arguments": {"userid": "vwxyz"}}]