> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agno.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Async Agent with Tools

> Run a Nexus agent with WebSearchTools asynchronously.

## Code

```python tool_use.py theme={null}
"""Run `uv pip install ddgs` to install dependencies."""

import asyncio

from agno.agent import Agent
from agno.models.nexus import Nexus
from agno.tools.websearch import WebSearchTools

agent = Agent(
    model=Nexus(id="anthropic/claude-sonnet-4-20250514"),
    tools=[WebSearchTools()],
    markdown=True,
)

asyncio.run(agent.aprint_response("Whats happening in France?"))

```

## Usage

<Steps>
  <Snippet file="create-venv-step.mdx" />

  <Step title="Set your API keys">
    ```bash theme={null}
    export OPENAI_API_KEY=xxx
    export ANTHROPIC_API_KEY=xxx
    ```
  </Step>

  <Step title="Install dependencies">
    ```bash theme={null}
    uv pip install -U agno openai ddgs
    ```
  </Step>

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

    ```bash theme={null}
    python tool_use.py
    ```
  </Step>
</Steps>