Data Visualization MCP Server

Overview

A Model Context Protocol (MCP) server implementation that provides the LLM an interface for visualizing data using Vega-Lite syntax.

Components

Tools

The server offers two core tools:

• save_data

  • Save a table of data agregations to the server for later visualization

  • Input:

    • name (string): Name of the data table to be saved

    • data (array): Array of objects representing the data table

  • Returns: success message

• visualize_data

  • Visualize a table of data using Vega-Lite syntax

  • Input:

    • data_name (string): Name of the data table to be visualized

    • vegalite_specification (string): JSON string representing the Vega-Lite specification

  • Returns: If the --output_type is set to text, returns a success message with an additional artifact key containing the complete Vega-Lite specification with data. If the --output_type is set to png, returns a base64 encoded PNG image of the visualization using the MPC ImageContent container.

Usage with Claude Desktop