update_instructions

from signalwire.livewire import Agent, AgentSession, AgentServer, JobContext, function_tool, run_app
@function_tool
def escalate() -> str:
    """Escalate to a senior agent."""
    return "Escalating now."
server = AgentServer()
@server.rtc_session()
async def entrypoint(ctx: JobContext):
    await ctx.connect()
    agent = Agent(
        instructions="You are a junior support agent. Help with basic questions.",
        tools=[escalate],
    )
    session = AgentSession()
    await agent.update_instructions("You are now a senior support agent. Handle complex issues.")
    await session.start(agent, room=ctx.room)
run_app(server)