VFX Forge MCP Server

An MCP (Model Context Protocol) server that enables AI agents to interact with the VFX Forge Roblox plugin for creating and manipulating visual effects.

Overview

This project provides a bridge between AI agents (like Claude) and the VFX Forge plugin running in Roblox Studio. It allows agents to:

• Explore and query the Roblox DataModel hierarchy
• Create, modify, and delete instances
• Manipulate properties and attributes
• Partially use some of the VFX Forge tools/features
• Access Roblox API documentation offline

The MCP server communicates with AI agents via the standard MCP protocol (stdio), and with the VFX Forge plugin via WebSocket for real-time bidirectional communication.

Installation

Automatic Setup

Not available yet

Local Setup

1. Install dependencies:

cd vfx-forge-mcp
bun install

2. Configure your MCP client to use this server. For Claude Desktop, add to your claude_desktop_config.json:

{
  "mcpServers": {
    "vfx-forge": {
      "command": "bun",
      "args": ["run", "/path/to/vfx-forge-mcp/src/index.ts"],
      "env": {
        "VFX_FORGE_PORT": "3847"
      }
    }
  }
}

3. Enable the MCP bridge in VFX Forge plugin settings within Roblox Studio.

Running

# Start the server
bun run start

# Development mode with hot reload
bun run dev

# Type checking
bun run typecheck

Health Check

The WebSocket server exposes a health endpoint at http://localhost:3847/health:

{
  "status": "ok",
  "connected": true,
  "pendingRequests": 0,
  "pluginVersion": "1.0.0",
  "uptime": 12345
}

Environment Variables

Variable	Default	Description
VFX_FORGE_PORT	3847	Port for the WebSocket server