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

# MCP Node

> Call tools on your MCP server from within a conversation flow.

MCP node is used to call tools on your MCP server. It's not intended for having a conversation with the user, but the agent can still talk while in this node if needed.

## Add MCP Server

<Steps>
  <Step title="Add MCP server">
    To create an MCP node, first add an MCP server connection.
  </Step>

  <Step title="Set request headers (optional)">
    Define custom headers to include with requests sent to your MCP server.
  </Step>

  <Step title="Set query parameters (optional)">
    Define query parameters to append to your MCP server endpoint URL.
  </Step>

  <Step title="Add MCP Tool">
    Select the MCP tool to use.
  </Step>

  <Step title="Set response variables (optional)">
    Extract values from the MCP tool response and save them as dynamic variables for use later in the conversation.

    For example, extract a user's name from the response and reference it later using `{{user_name}}`.

    ```json theme={null}
    {
      "properties": {
        "user": {
          "name": "John Doe",
          "age": 26
        }
      }
    }
    ```
  </Step>
</Steps>

## Node Settings

| Setting              | Description                                                 |
| -------------------- | ----------------------------------------------------------- |
| Global Node          | See Global Node guide.                                      |
| Fine-tuning Examples | Fine-tune transition behavior. See Finetune Examples guide. |