Open-sourced UE Box — an AI agent that operates the Unreal Editor (levels, Blueprints, materials, C++)

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Hi everyone — I built UE Box (虚幻盒子), an open-source AI agent that works inside the Unreal Editor instead of only chatting about code.

You give it a goal; it can place actors, edit Blueprints, wire materials, and iterate on C++ compile errors. Risky steps pause for approval, and each round leaves a change log you can re-check against the editor.

Highlights:

- 100+ engine tools via the UnrealAgentLink plugin

- 25 built-in skills for common UE workflows

- UE 5.0–5.8 (not only the newest MCP surface)

- Local-first: no account; API keys stay on your machine

- App Apache-2.0, plugin MIT

Site (EN): UE Box — an open-source AI agent for Unreal Engine | Blueprints · materials · levels · C++

GitHub: GitHub - ueboxai/uebox: Open-source AI agent that operates the Unreal Editor — levels, blueprints, materials, C++. · GitHub

Windows download: https://uebox.ai/dl/win

Happy to take hard feedback — especially where agent edits feel unsafe or where Blueprint/material graphs still break.

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