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": "polygon_area_shoelace", "description": "Calculates the area of a polygon using the shoelace formula.", "parameters": {"vertices": {"description": "A list of polygon vertices represented as tuples (x, y).", "type": "List[Tuple[float, float]]"}}}]
Can you calculate the area of a heptagon with vertices at (0, 0), (2, 0), (3, 1), (3, 2), (2, 3), (1, 2), and (1, 1)?
user
assistant
[{"name": "polygon_area_shoelace", "arguments": {"vertices": [[0, 0], [2, 0], [3, 1], [3, 2], [2, 3], [1, 2], [1, 1]]}}]