Unreal Mcp

Name: Unreal Mcp
Author: LLM Mart

No install snippet on purpose. A working MCP config is a command, its arguments and an environment block — the last two are where API keys live, so this catalogue never stores them and cannot publish them. Follow the link above for the authors' own instructions.

and let it build levels, Blueprints, UI, materials, effects and more, through a native C++ editor plugin.

_{🧭 One tool, nearly 400 capabilities · ⚙️ Native C++ editor plugin · 🌐 HTTP or stdio · 🔐 Local and token-protected by default · 🎮 Unreal Engine 5.0 – 5.8}

🚀 Quick Start · 📖 Wiki · 📦 Releases · 💬 Discussions

📌 Which version is this? This README describes the 0.6 line: the dev branch and npm unreal-engine-mcp-server@beta. The previous stable release, 0.5.30 (npm latest), exposes 23 separate tools instead of one; see Upgrading from 0.5.x.

Contents · What it does · How it works · Quick start · The unreal tool · Configuration · Security · Engine plugins · Docker · Documentation · Development · Community

What it does

🏗️ Levels and actors Spawn one actor or hundreds in a single call, place and attach them, find the ones sunk into the floor, and load, stream and save levels.	🧩 Blueprints and UI Create Blueprints, variables and components, build whole event graphs in one batch, and lay out UMG widgets, with a preview image to check them.	🎨 Materials and worlds Material graphs and instances, procedural textures, lighting, landscapes, foliage, Niagara effects and PCG graphs.
🕹️ Gameplay Characters and animation, Gameplay Ability System, AI (Behavior Trees, State Trees, EQS), inventory, networking and Enhanced Input.	🎬 Cinematics and audio Level Sequences, cameras, Movie Render Queue and Take Recorder; Sound Cues and MetaSounds.	🧪 Play and verify Run Play-In-Editor with synthetic input, take screenshots the model can see, read logs, profile, run Python, and package builds.

Nearly 400 capabilities in all, behind a single MCP tool. The assistant finds them by searching in plain words, so nobody has to learn their names. The full list is the generated Action Reference.

Unreal Editor 5.8 showing a platformer level built with the MCP; the status bar reads MCP :3000 (1)
_{A platformer level built with the MCP, in Unreal Editor 5.8. Bottom right: the plugin's status, MCP :3000 (1), meaning the native server is running on port 3000 with one client connected.}

How it works

Architecture: an AI client reaches the MCP Automation Bridge plugin inside the Unreal Editor either over Streamable HTTP on port 3000 (Route A) or through the Node.js server over stdio and a WebSocket on port 8090 (Route B); the plugin drives the editor APIs on the game thread

What it does

How it works

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