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_user_info", "description": "Fetches information about an Instagram user using their user ID.", "parameters": {"is_id": {"description": "The user ID of the Instagram account.", "type": "int", "default": "25025320"}}}, {"name": "trending_challenges", "description": "Fetches the trending challenges from the TikTok API.", "parameters": {"cursor": {"description": "The position to start fetching results from. Defaults to 0.", "type": "int, optional", "default": "0"}, "proxy": {"description": "The proxy server to use for the request. Defaults to None.", "type": "str, optional", "default": ""}, "count": {"description": "The number of results to return. Defaults to 10.", "type": "int, optional", "default": "10"}}}, {"name": "get_misinformation_score_account_twitter_account_get", "description": "Retrieves the misinformation score for a given Twitter account using the Mescal API.", "parameters": {"twitter_account": {"description": "The Twitter account ID for which to retrieve the misinformation score.", "type": "str", "default": "{}"}}}]
Can you fetch the details of Instagram user with ID 123456789?
user
assistant
[{"name": "get_user_info", "arguments": {"is_id": 123456789}}]