"""
Built-in tool functions for CodeAct agent.
Example tools that demonstrate the tool system.
"""

from typing import Any, List

__all__ = ["FUNCTION_REGISTRY", "get_all_tool_functions",
           "add_numbers", "multiply_numbers"]


def add_numbers(a: int, b: int) -> int:
    """Add two numbers together."""
    return a + b


def multiply_numbers(a: int, b: int) -> int:
    """Multiply two numbers together."""
    return a * b


# ====================
# FUNCTION REGISTRY
# ====================

FUNCTION_REGISTRY = {
    "add_numbers": add_numbers,
    "multiply_numbers": multiply_numbers,
}


def get_all_tool_functions() -> List[Any]:
    """Get all functions from FUNCTION_REGISTRY."""
    return list(FUNCTION_REGISTRY.values())