by db-lyon
Complete Unreal Engine development toolkit exposed as MCP tools.
# Add to your Claude Code skills
git clone https://github.com/db-lyon/ue-mcpGuides for using mcp servers skills like ue-mcp.
Last scanned: 5/30/2026
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"message": "express-rate-limit: Vulnerability found",
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"message": "hono: Hono has CSS Declaration Injection via Style Object Values in JSX SSR",
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"message": "ip-address: ip-address has XSS in Address6 HTML-emitting methods",
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"message": "postcss: PostCSS has XSS via Unescaped </style> in its CSS Stringify Output",
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"message": "ws: ws: Uninitialized memory disclosure",
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"status": "WARNING",
"scannedAt": "2026-05-30T16:30:07.277Z",
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}ue-mcp is an open-source mcp servers skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by db-lyon. Complete Unreal Engine development toolkit exposed as MCP tools. It has 193 GitHub stars.
ue-mcp returned warnings in SkillsLLM's automated security scan. It has no critical vulnerabilities, but review the flagged issues in the Security Report section before adding it to your workflow.
Clone the repository with "git clone https://github.com/db-lyon/ue-mcp" and add it to your Claude Code skills directory (see the Installation section above).
ue-mcp is primarily written in C++. It is open-source under db-lyon on GitHub, so you can review or fork the full source.
Yes. SkillsLLM lists many other MCP Servers skills you can browse and compare side by side. Open the MCP Servers category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh ue-mcp against similar tools.
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Requires a passing catalog security scan. Resolve the flagged issues and resubmit to enable featuring.
Unreal Engine Model Context Protocol Server - gives AI assistants deep read/write access to the Unreal Editor through 22 category tools covering 612+ actions, plus a YAML flow engine for multi-step workflows.
flowchart LR
AI[AI Assistant] -->|stdio| MCP[MCP Server<br/>TypeScript / Node.js]
MCP -->|WebSocket<br/>JSON-RPC| Plugin[C++ Bridge Plugin<br/>inside Unreal Editor]
Plugin -->|UE API| Editor[Editor Subsystems]
MCP -->|direct fs| FS[Config INI<br/>C++ Headers<br/>Asset Listing]
Blueprints, materials, levels, actors, animation, VFX, landscape, PCG, foliage, audio, UI, physics, navigation, AI, GAS, networking, sequencer, build pipeline — all programmable through natural language.
npx ue-mcp init
The interactive setup will:
.uproject (auto-detects in current directory)Restart the editor once after setup to load the bridge plugin. To update later: npx ue-mcp update
Then ask your AI:
project(action="get_status") — verify connection
level(action="get_outliner") — see what's in the level
asset(action="list") — browse project assets
If you prefer to configure manually, add to your MCP client config:
{
"mcpServers": {
"ue-mcp": {
"command": "npx",
"args": ["ue-mcp", "C:/path/to/MyGame.uproject"]
}
}
}
.ue-mcp.json and MCP client config| Category | Examples |
|---|---|
| Levels | Place/move/delete actors, spawn lights and volumes, manage splines, actor bounds |
| Blueprints | Read/write graphs, add nodes, connect pins, compile, CDO property access |
| Materials | Create materials and instances, author expression graphs |
| Assets | CRUD, import meshes/textures/animations, datatables, mesh bounds/collision/nav |
| Animation | Anim blueprints, montages, blendspaces, skeletons |
| VFX | Niagara systems, emitters, parameters |
| Landscape | Sculpt terrain, paint layers, import heightmaps |
| PCG | Author and execute Procedural Content Generation graphs |
| Gameplay | Physics, collision, navigation, navmesh inspection, behavior trees, EQS, perception, PIE damage |
| GAS | Gameplay Ability System — attributes, abilities, effects, cues |
| Networking | Replication, dormancy, relevancy, net priority |
| UI | UMG widgets, editor utility widgets and blueprints, runtime delegate inspection |
| Editor | Console, Python, PIE, viewport, sequencer, build pipeline, logs |
| Reflection | Class/struct/enum introspection, gameplay tags |
Requires PythonScriptPlugin (ships with UE 4.26+).
If you clone this repo to contribute, install git-lfs first - the bundled test project stores .uasset / .umap via LFS and plain git clone will leave them as pointer files.
Issues and pull requests welcome. If an AI agent had to fall back to execute_python during your session, it will offer to submit structured feedback automatically — this helps us prioritize which native handlers to add next.
UE-MCP is licensed under the MIT License. Use it freely in personal, educational, and commercial projects. See LICENSE.
Contributions are accepted under the same MIT License (inbound contributions are licensed under the project's outbound license).