MCP for Unreal Engine

Let AI Control Your UE5 Scenes

Use the same MCP technology that powers Ralpha under the hood. Connect Claude, GPT, or any AI to Unreal Engine 5 with 2,000+ commands.

Plugin v1.0.0 for Unreal Engine 5.7

Download Plugin

Windows

~16 MB

Windows 10/11, UE5.7+

DLLs: RalphaCore, RalphaEditor, RalphaAutonomous + .uplugin + Resources

macOS

~37 MB

Apple Silicon & Intel, UE5.7+

Dylibs: RalphaCore, RalphaEditor, RalphaAutonomous + .uplugin + Resources

Linux

~18 MB

Ubuntu 22.04+, UE5.7+

Shared libraries: RalphaCore, RalphaEditor, RalphaAutonomous + .uplugin + Resources

MCP Bridge included — a Go binary is bundled with the plugin. No separate download or Node.js required.

Quick Start

1
Extract plugin to your UE5 project
YourProject/Plugins/RalphaPlugin/
2
Launch UE5 — MCP server starts on port 30010
Check Output Log for "MCP Server listening on port 30010"
3
Connect with Claude Code or Claude Desktop
The bundled MCP Bridge (Go binary) connects automatically — no extra setup
4
Ask Claude to control your scene
"Set the sun to golden hour, add volumetric fog, and capture a screenshot"

What's Included

236 C++ command handlers, 2,700+ commands over TCP

Built-in MuJoCo physics — real forces, robot simulation, RL training

Built-in real-time lip sync — 82 channels at 50fps, live NPC conversations

Gemini gRPC streaming — real-time voice + video scene direction

Scene control: lighting, atmosphere, camera, materials, post-process

Characters: MetaHuman, animation, IK, crowds, dialogue performance

Works in editor AND packaged game builds

Full undo support — every command is Ctrl+Z-able

Auto-detects 15+ optional UE5 plugins

Full C++ source included

236 command handlers, 2,700+ commands — full reference (PDF)

Available on FAB

Full C++ source code. Both tiers include the identical plugin — no feature gating.

Individual

Indie

$99/one-time

Individuals and companies under $100K annual revenue

Full plugin — all 236 handlers, all features
Full C++ source code
Win64 + Mac + Linux
Expert Skills included
Community support

Studio

$599/one-time

Companies with $100K+ annual revenue

Same full plugin — all 236 handlers, all features
Full C++ source code
Win64 + Mac + Linux
Expert Skills included
Community support

Ralpha Brain

Coming Soon

The AI iteration engine. Give it a reference image and it builds a matching 3D world — adjusting lighting, atmosphere, materials, and camera until the render converges. Specialist agents handle sky, sunset, water, props, characters, and more.

Expert Skills — Included

112 specialist skills for sky, sunset, water, clouds, post-processing, geolocation, props, and more. Included in the plugin download and FAB listing. Use them as slash commands in Claude Code or Codex.

Plugin licensed under Fab Standard License. CC BY-NC 4.0 for non-commercial use.
Questions? hello@ralpha.ai