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

# Tool Node

> Connect to external services and APIs

Add [Dify tools](/en/use-dify/workspace/tools) to your workflows as standalone nodes.

This lets your workflows interact with external services and APIs to access real-time data and perform actions, like web searches, database queries, or content processing.

**To add and configure a tool node**:

1. On the canvas, click **Add Node** > **Tools**, then select an action from an available tool.

2. Optional: If a tool requires authentication, select an existing credential or create a new one.

   <Info>
     To change the default credential, go to **Tools** or **Plugins**.
   </Info>

3. Complete any other required tool settings.