系统提示词

import asyncio
from veadk import Agent, Runner

agent = Agent(
    name="support_assistant",
    instruction=(
        "You help users troubleshoot billing issues. "
        "Ask for missing details before suggesting a solution. "
        "Do not ask for passwords or payment card numbers."
    ),
)

async def main():
    result = await Runner(agent=agent).run(
        messages="My invoice total is different from last month.",
        session_id="prompt-demo",
    )
    print(result)

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

import asyncio
from veadk import Agent, Runner

agent = Agent(
    name="personal_assistant",
    instruction="Address the user as {user_name}. Answer in {language}.",
)

async def main():
    runner = Runner(agent=agent, app_name="prompt_demo", user_id="demo-user")
    await runner.session_service.create_session(
        app_name="prompt_demo",
        user_id="demo-user",
        session_id="state-demo",
        state={"user_name": "Alex", "language": "English"},
    )
    print(await runner.run(messages="Introduce yourself.", session_id="state-demo"))

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

import asyncio
from google.adk.agents.readonly_context import ReadonlyContext
from veadk import Agent, Runner

def build_instruction(context: ReadonlyContext) -> str:
    language = context.state.get("language", "English")
    return f"Answer in {language}. Keep the explanation concise and factual."

agent = Agent(name="assistant", instruction=build_instruction)

async def main():
    print(await Runner(agent=agent).run(
        messages="What is a session?", session_id="provider-demo"
    ))

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