tech.unravel/mcp-vegalite-server

Name: tech.unravel/mcp-vegalite-server
Author: unravel-team

@unravel-team

Repository

About tech.unravel/mcp-vegalite-server

An MCP Server for creating beautiful visualisation using Vegalite (via vl-convert)

Basic information

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "mcp-vegalite-server-unravel-team": {
      "command": "npx",
      "args": [
        "@modelcontextprotocol/inspector",
        "java",
        "-Dclojure.tools.logging.factory=clojure.tools.logging.impl/log4j2-factory",
        "-Dorg.eclipse.jetty.util.log.class=org.eclipse.jetty.util.log.Slf4jLog",
        "-Dlog4j2.contextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector",
        "-Dlog4j2.configurationFile=log4j2-mcp.xml",
        "-Dbabashka.json.provider=metosin/jsonista",
        "-Dlogging.level=INFO",
        "-Dmcp.vegalite.vl_convert_executable=/Users/vedang/.cargo/bin/vl-convert",
        "-cp",
        "/Users/vedang/mcp-vegalite-server/target/tech.unravel/mcp-vegalite-server-1.0.0.jar",
        "tech.unravel.mcp_vegalite_server"
      ]
    }
  }
}

Tools

No tools detected

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is tech.unravel/mcp-vegalite-server?

MCP server that integrates with Vegalite and vl-convert to create diagrams. Provides two tools, save-data and visualize-data, enabling an LLM host to calculate data, save it, generate a Vega‑Lite spec, and render the final chart.

How to use tech.unravel/mcp-vegalite-server?

Build the JAR with make clean && make build, then run the server using the provided Java command, specifying the full path to the JAR and the vl-convert executable. Ensure vl-convert CLI is installed. Example configurations for Claude Desktop and MCP Inspector are included in the README.