Observability for OpenAI Agents SDK

import asyncio

from agents import Agent, Runner, function_tool, handoff
from lmnr import Laminar, observe

Laminar.initialize()


@function_tool
def cancel_booking(confirmation_code: str) -> str:
    return f"Booking {confirmation_code} cancelled. Refund in 5-7 business days."


@function_tool
def lookup_loyalty_balance(member_id: str) -> str:
    return f"Member {member_id}: 48,200 points, Gold tier."


booking_agent = Agent(
    name="BookingAgent",
    handoff_description="Handles cancellations and loyalty balance lookups.",
    instructions=(
        "You handle cancellations and loyalty questions. Use cancel_booking for "
        "cancellations and lookup_loyalty_balance for points and tier."
    ),
    tools=[cancel_booking, lookup_loyalty_balance],
    model="gpt-5-mini",
)

triage_agent = Agent(
    name="TriageAgent",
    instructions=(
        "Route the user to the correct specialist. For cancellations or loyalty, "
        "hand off to BookingAgent. Do not answer specialist topics yourself."
    ),
    handoffs=[handoff(booking_agent)],
    model="gpt-5-mini",
)


@observe(name="airline-support")
async def main():
    result = await Runner.run(
        triage_agent,
        "Cancel my booking Z9X7K2 and look up loyalty for member M-88421.",
    )
    print(result.final_output)


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