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": "is_rotation", "description": "Checks if one string is a rotation of another string.", "parameters": {"str1": {"description": "The first string.", "type": "str"}, "str2": {"description": "The second string.", "type": "str"}}}, {"name": "is_sum_of_cubes", "description": "Checks if a number is the sum of the cubes of its digits.", "parameters": {"num": {"description": "The number to check.", "type": "int"}}}, {"name": "find_files", "description": "Finds all files with a specific extension in a directory and its subdirectories.", "parameters": {"directory": {"description": "The directory to search in.", "type": "str"}, "extension": {"description": "The file extension to search for.", "type": "str"}}}, {"name": "calculate_age", "description": "Calculates the age based on the birthdate.", "parameters": {"birthdate": {"description": "The birthdate in the format 'YYYY-MM-DD'.", "type": "str"}}}, {"name": "get_range", "description": "Helper function to format the range string.", "parameters": {"start": {"description": "The start of the range.", "type": "int"}, "end": {"description": "The end of the range.", "type": "int"}}}]
Check if the number 153 is the sum of the cubes of its digits.
user
assistant
[{"name": "is_sum_of_cubes", "arguments": {"num": 153}}]