エージェントの定義

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15from agents import Agent, function_tool


@function_tool
def get_weather(city: str) -> str:
    """Return the weather for a given city."""
    return f"The weather in {city} is sunny."


agent = Agent(
    name="Weather bot",
    instructions="You are a helpful weather bot.",
    model="gpt-6-astra",
    tools=[get_weather],
)

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30import asyncio

from pydantic import BaseModel

from agents import Agent, Runner


class CalendarEvent(BaseModel):
    name: str
    date: str
    participants: list[str]


agent = Agent(
    name="Calendar extractor",
    instructions="Extract calendar events from text.",
    output_type=CalendarEvent,
)


async def main() -> None:
    result = await Runner.run(
        agent,
        "Dinner with Priya and Sam on Friday.",
    )
    print(result.final_output)


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

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35import asyncio
from dataclasses import dataclass

from agents import Agent, RunContextWrapper, Runner, function_tool


@dataclass
class UserInfo:
    name: str
    uid: int


@function_tool
async def fetch_user_age(wrapper: RunContextWrapper[UserInfo]) -> str:
    """Fetch the age of the current user."""
    return f"The user {wrapper.context.name} is 47 years old."


agent = Agent[UserInfo](
    name="Assistant",
    tools=[fetch_user_age],
)


async def main() -> None:
    result = await Runner.run(
        agent,
        "What is the age of the user?",
        context=UserInfo(name="John", uid=123),
    )
    print(result.final_output)


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