UEAgent

The MCP server for Unreal Engine 5, built into the editor. More than 2,000 tools let Claude Code, Cursor or any MCP client build in Unreal, with every change checked before it runs and read back after.

Get started

1. Download UEAgent-<version>-UE5.8-Win64.zip from the latest release and unzip it into <YourProject>/Plugins/. It is precompiled: no compiler is needed, even in a Blueprint-only project.
2. Open the project. The editor's status bar shows MCP · 55561 once the server is up.
3. Connect your client: Claude Code, Cursor, VS Code, Windsurf, Claude Desktop, Gemini CLI or Codex.

What it does

• The whole engine. Blueprints and their graphs, materials, animation, Niagara, levels and World Partition, PCG, Sequencer, UMG, GAS, AI, audio, USD and more: see the tool reference.
• Verified, not assumed. Preconditions refuse the calls known to crash or freeze the editor, and readback re-reads the state after each call, so a write that did not stick is reported as failed.
• Safe with your content. Content under a Read Only Content Root cannot be saved, renamed, moved or deleted by any tool, and nothing leaves your machine: the server only listens on 127.0.0.1.
• For any client. Clients that cap how many tools a server may list get the compact tool list.

Learn more

Examples	Prompts that work well, and the tools they use
Skills	The Claude Code plugin: a skill builder and three skills made with it
FAQ	Versions, safety, cost
Troubleshooting	When a client cannot connect or a call is refused
Architecture	How a call travels through the editor, and the contract around it

UEAgent is open source under the MIT License. Questions go to Discussions, and the code is on GitHub.

It is also listed on Glama, the MCP server directory: