3d-db MCP Server

Lets AI tools (Claude Desktop, Claude Code, Cursor, Windsurf, VS Code with GitHub Copilot/Cline/Continue) visualize your database schema in 3D — automatically, on command.

You do not need to clone any repository or run a dev server. The visualizer is bundled inside this package. The only requirement is Node.js.

Requirements

• Node.js 18 or later — check with node --version. Download from nodejs.org if needed.
• One of: Claude Desktop, Claude Code, Cursor, Windsurf, or VS Code (with GitHub Copilot, Cline, or Continue).
• Your AI tool already connected to your database. This tool handles visualization only — it does not connect to your database directly.

Setup

Run this once in your terminal:

npx --yes --package 3d-db-mcp-zq db-viz-mcp setup

This detects which AI tools you have installed and configures them automatically. No config files to edit.

Then restart your AI tool and ask it:

"Load my database schema into the 3D visualizer"

A browser window opens with your schema in 3D.

VS Code (GitHub Copilot, Cline, Continue)

VS Code MCP config is project-scoped. Add .vscode/mcp.json to your project:

{
  "servers": {
    "3d-db": {
      "type": "stdio",
      "command": "npx",
      "args": ["--yes", "--package", "3d-db-mcp-zq", "db-viz-mcp"]
    }
  }
}

What your AI can do

load_schema

Loads your database schema into the 3D visualizer. Accepts JSON or SQL DDL.

Example prompt:

"Load my database schema into the 3D visualizer"

highlight_query

Highlights a SQL query — dims unrelated tables, draws the join path.

Example prompt:

"Show me how this query touches the database"

get_schema

Reads the current schema back from the visualizer, including tables, relationships, row counts, and optimization tips.

Example prompt:

"What does my schema look like right now? Any issues?"

How it works

The setup command patches your AI tool's config file to add:

{
  "command": "npx",
  "args": ["--yes", "--package", "3d-db-mcp-zq", "db-viz-mcp"]
}

When your AI tool starts a session, it runs this command automatically. The server:

1. Picks an available port (starting at 4242)
2. Generates a one-time session token
3. Opens your browser at http://localhost:<port>?token=<token>
4. Serves the 3D visualizer as a local web page
5. Listens for tool calls from your AI

The server shuts down automatically when your AI session ends.

Security

• Runs on localhost only — never exposed to the network
• A random token is generated each session — no other tab or process can connect
• No database credentials are stored or proxied — your AI tool handles the database connection
• The server shuts down automatically when your AI tool session ends