https://github.com/isaacwasserman/mcp-vegalite-server

https://github.com/isaacwasserman/mcp-vegalite-server

Last synced: about 2 months ago
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• Host: GitHub
• URL: https://github.com/isaacwasserman/mcp-vegalite-server
• Owner: isaacwasserman
• Created: 2024-12-12T18:34:10.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2025-05-16T19:44:35.000Z (about 1 year ago)
• Last Synced: 2025-05-16T20:37:26.145Z (about 1 year ago)
• Language: Python
• Size: 21.5 KB
• Stars: 65
• Watchers: 2
• Forks: 18
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

          
[![MseeP.ai Security Assessment Badge](https://mseep.net/pr/isaacwasserman-mcp-vegalite-server-badge.png)](https://mseep.ai/app/isaacwasserman-mcp-vegalite-server)

# Data Visualization MCP Server

[![smithery badge](https://smithery.ai/badge/mcp-server-vegalite)](https://smithery.ai/server/mcp-server-vegalite)

## 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

```python

# Add the server to your claude_desktop_config.json

{

  "mcpServers": {

    "datavis": {

        "command": "uv",

        "args": [

            "--directory",

            "/absolute/path/to/mcp-datavis-server",

            "run",

            "mcp_server_datavis",

            "--output_type",

            "png" # or "text"

        ]

    }

  }

}

```