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unreal-mcp

unreal-mcp

MCP server for Unreal Engine that uses Unreal Python Remote Execution

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⚡ Differences

This server does not require installing a new UE plugin as it uses the built-in Python remote execution protocol.

Adding new tools/features is much faster to develop since it does not require any C++ code.

It can support the full Unreal Engine Python API

⚠️ Note

  • This is not an official Unreal Engine project.

  • Your AI agents or tools will have full access to your Editor.

  • Review any changes your Client suggests before you approve them.

📦 Installation

📋 Requirements

  • 🔧 Unreal Engine 5.4+ (verified, may work with earlier versions)

  • 🟢 Node.js with npx

  • 🤖 MCP Client (Claude, Cursor, etc.)

  1. Setting up your Editor:

    • Open your Unreal Engine project

    • Go to Edit -> Plugins

    • Search for "Python Editor Script Plugin" and enable it

    • Restart the editor if prompted

    • Go to Edit -> Project Settings

    • Search for "Python" and enable the "Enable Remote Execution" option

enable plugin enable remote execution

  1. Set up your Client:

    • Edit your Claude (or Cursor) config

{ "mcpServers": { "unreal": { "command": "npx", "args": [ "-y", "@runreal/unreal-mcp" ] } } }

🔧 Troubleshooting

If you get an error similar to MCP Unreal: Unexpected token 'C', Connection... it means that the mcp-server was not able to connect to the Unreal Editor.

  • Make sure that the Python Editor Script Plugin is enabled and that the Remote Execution option is checked in your project settings.

  • Try also changing your bind address from 127.0.0.1 to 0.0.0.0 but note that this will allow connections from your local network.

  • Restart your Unreal Editor fully.

  • Fully close/open your client (Claude, Cursor, etc.) to ensure it reconnects to the MCP server. (File -> Exit on windows).

  • Check your running processes and kill any zombie unreal-mcp Node.js processes.

🛠️ Available Tools

Tool

Description

set_unreal_engine_path

Set the Unreal Engine path

set_unreal_project_path

Set the Project path

get_unreal_engine_path

Get the current Unreal Engine path

get_unreal_project_path

Get the current Unreal Project path

editor_run_python

Execute any python within the Unreal Editor

editor_list_assets

List all Unreal assets

editor_export_asset

Export an Unreal asset to text

editor_get_asset_info

Get information about an asset, including LOD levels for StaticMesh and SkeletalMesh assets

editor_get_asset_references

Get references for an asset

editor_console_command

Run a console command in Unreal

editor_project_info

Get detailed information about the current project

editor_get_map_info

Get detailed information about the current map/level

editor_search_assets

Search for assets by name or path with optional class filter

editor_get_world_outliner

Get all actors in the current world with their properties

editor_validate_assets

Validate assets in the project to check for errors

editor_create_object

Create a new object/actor in the world

editor_update_object

Update an existing object/actor in the world

editor_delete_object

Delete an object/actor from the world

editor_take_screenshot

Take a screenshot of the Unreal Editor

editor_move_camera

Move the viewport camera to a specific location and rotation for positioning screenshots

🤝 Contributing

Please feel free to open issues or pull requests. Contributions are welcome, especially new tools/commands.

License MIT

Deploy Server
A
security – no known vulnerabilities
A
license - permissive license
A
quality - confirmed to work

local-only server

The server can only run on the client's local machine because it depends on local resources.

unreal-mcp

  1. ⚡ Differences
    1. ⚠️ Note
      1. 📦 Installation
        1. 📋 Requirements
        2. 🔧 Troubleshooting
      2. 🛠️ Available Tools
        1. 🤝 Contributing
          1. License MIT

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