> ## 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.

# Agent with Tools

> Give a Vertex AI Claude agent a web search tool and let Agno run the tool-use loop.

Attach `WebSearchTools` to a Vertex AI Claude agent to answer questions with current web results.

## Code

```python tool_use.py theme={null}
from agno.agent import Agent
from agno.models.vertexai.claude import Claude
from agno.tools.websearch import WebSearchTools

agent = Agent(
    model=Claude(id="claude-sonnet-4@20250514"),
    tools=[WebSearchTools()],
    markdown=True,
)
agent.print_response("Whats happening in France?")
```

## Usage

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

  <Step title="Set your environment variables">
    <CodeGroup>
      ```bash Mac theme={null}
      export CLOUD_ML_REGION=xxx
      export GOOGLE_CLOUD_PROJECT=xxx
      ```

      ```bash Windows theme={null}
      setx CLOUD_ML_REGION xxx
      setx GOOGLE_CLOUD_PROJECT xxx
      ```
    </CodeGroup>
  </Step>

  <Step title="Authenticate your CLI session">
    ```bash theme={null}
    gcloud auth application-default login
    ```

    <Note>You don't need to authenticate your CLI every time.</Note>
  </Step>

  <Step title="Install dependencies">
    ```bash theme={null}
    uv pip install -U 'anthropic[vertex]' ddgs agno
    ```
  </Step>

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

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