genai-toolbox/docs/en/getting-started/quickstart/python/adk/quickstart.py

from google.adk.agents import Agent
from google.adk.runners import Runner
from google.adk.sessions import InMemorySessionService
from google.adk.artifacts.in_memory_artifact_service import InMemoryArtifactService
from google.genai import types
from toolbox_core import ToolboxSyncClient

import asyncio
import os

# TODO(developer): replace this with your Google API key

api_key = os.environ.get("GOOGLE_API_KEY") or "your-api-key" # Set your API key here
os.environ["GOOGLE_API_KEY"] = api_key

async def main():
  with ToolboxSyncClient("http://127.0.0.1:5000") as toolbox_client:

      prompt = """
        You're a helpful hotel assistant. You handle hotel searching, booking and
        cancellations. When the user searches for a hotel, mention it's name, id,
        location and price tier. Always mention hotel ids while performing any
        searches. This is very important for any operations. For any bookings or
        cancellations, please provide the appropriate confirmation. Be sure to
        update checkin or checkout dates if mentioned by the user.
        Don't ask for confirmations from the user.
      """

      root_agent = Agent(
          model='gemini-2.0-flash-001',
          name='hotel_agent',
          description='A helpful AI assistant.',
          instruction=prompt,
          tools=toolbox_client.load_toolset("my-toolset"),
      )

      session_service = InMemorySessionService()
      artifacts_service = InMemoryArtifactService()
      session = await session_service.create_session(
          state={}, app_name='hotel_agent', user_id='123'
      )
      runner = Runner(
          app_name='hotel_agent',
          agent=root_agent,
          artifact_service=artifacts_service,
          session_service=session_service,
      )

      queries = [
          "Find hotels in Basel with Basel in its name.",
          "Can you book the Hilton Basel for me?",
          "Oh wait, this is too expensive. Please cancel it and book the Hyatt Regency instead.",
          "My check in dates would be from April 10, 2024 to April 19, 2024.",
      ]

      for query in queries:
          content = types.Content(role='user', parts=[types.Part(text=query)])
          events = runner.run(session_id=session.id,
                              user_id='123', new_message=content)

          responses = (
            part.text
            for event in events
            for part in event.content.parts
            if part.text is not None
          )

          for text in responses:
            print(text)

asyncio.run(main())