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

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Add MCP server

1

Add MCP server

To create a MCP node, we first need to add MCP server.
2

Set request headers (optional)

You can define custom headers to include with the request Retell sends to your MCP Server.
3

Set query parameters (optional)

You can define query parameters to include in the request URL that Retell appends to your MCP Server Endpoint.
4

Add MCP Tool

Select MCP Tool
5

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, you can extract a user’s name from the response and reference it later using {{user_name}}.Example response body
{
"properties": {
    "user": {
    "name": "John Doe",
    "age": 26
    }
}
}

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Node Settings