Call Transfer

import os
from zrt import Agent, Pipeline, function_tool

class CallTransferAgent(Agent):
    def __init__(self, pipeline: Pipeline):
        super().__init__(
            agent_id="call-transfer",
            instructions="You are the Call Transfer Agent. Use the transfer_call tool to transfer the ongoing call to a new number.",
            pipeline=pipeline,
        )

    async def on_enter(self) -> None:
        await self.session.say("Hello, how can I help you today?")

    async def on_exit(self) -> None:
        await self.session.say("Goodbye, thank you for calling!")

    @function_tool
    async def transfer_call(self) -> None:
        """Transfer the call to the provided number"""
        token = os.getenv("ZRT_AUTH_TOKEN")
        transfer_to = os.getenv("CALL_TRANSFER_TO")
        return await self.session.call_transfer(token, transfer_to)