# Async Tool Use (/models/providers/gateways/litellm/usage/async-tool-use)



## Code [#code]

```python tool_use.py
import asyncio

from agno.agent import Agent
from agno.models.litellm import LiteLLM
from agno.tools.yfinance import YFinanceTools

openai_agent = Agent(
    model=LiteLLM(
        id="gpt-4o",
        name="LiteLLM",
    ),
    markdown=True,
    tools=[YFinanceTools()],
)

asyncio.run(openai_agent.aprint_response("What is the current TSLA stock price?"))
```

## Usage [#usage]

<Steps>
    <Step title="Set up your virtual environment">
      <CodeBlockTabs defaultValue="Mac">
        <CodeBlockTabsList>
          <CodeBlockTabsTrigger value="Mac">
            Mac
          </CodeBlockTabsTrigger>

          <CodeBlockTabsTrigger value="Windows">
            Windows
          </CodeBlockTabsTrigger>
        </CodeBlockTabsList>

        <CodeBlockTab value="Mac">
          ```bash
          uv venv --python 3.12
          source .venv/bin/activate
          ```
        </CodeBlockTab>

        <CodeBlockTab value="Windows">
          ```bash
          uv venv --python 3.12
          .venv\Scripts\activate
          ```
        </CodeBlockTab>
      </CodeBlockTabs>
    </Step>

  <Step title="Set your API key">
    ```bash
    export LITELLM_API_KEY=xxx
    ```
  </Step>

  <Step title="Install dependencies">
    ```bash
    uv pip install -U "litellm>=1.83.0" yfinance agno
    ```
  </Step>

  <Step title="Run Agent">
    Save the code above as `tool_use.py`, then run:

    ```bash
    python tool_use.py
    ```
  </Step>
</Steps>