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_case_by_id", "description": "Fetch the case payload from the Yardillo API using the given case ID.", "parameters": {"is_id": {"description": "The ID of the case to fetch.", "type": "str", "default": "611c0765e9308692195b8538"}}}]
Retrieve the case information for the case with ID 'klmno' using the custom RapidAPI key 'my_custom_key'.
user
assistant
[{"name": "get_case_by_id", "arguments": {"is_id": "klmno"}}]