stop_background_file

from signalwire import AgentBase
from signalwire import FunctionResult
agent = AgentBase(name="my-agent", route="/agent")
agent.set_prompt_text("You are a helpful assistant.")
@agent.tool(name="stop_hold_music", description="Stop hold music playback")
def stop_hold_music(args, raw_data):
    return (
        FunctionResult("I'm back.")
        .stop_background_file()
    )
agent.serve()