REPL utility

The SDK provides run_demo_loop for quick interactive testing.

import asyncio
from agents import Agent, run_demo_loop

async def main() -> None:
    agent = Agent(name="Assistant", instructions="You are a helpful assistant.")
    await run_demo_loop(agent)

if __name__ == "__main__":
    asyncio.run(main())

run_demo_loop prompts for user input in a loop, keeping the conversation history between turns. By default it streams model output as it is produced. Type quit or exit (or press Ctrl-D) to leave the loop.