How I taught Claude to see inside Unreal Engine

The author began developing a 3D action RPG in Unreal Engine 5, using tutorials and purchased lessons. Initially, the process was smooth, but problems arose when the game's behavior diverged from the tutorials. Troubleshooting was difficult due to the complexity of Unreal Engine and the author's limited experience. The author turned to Claude, an AI, for assistance since the engine uses serialized binary data which cannot be directly read by LLMs. They initially tried an existing plugin but extended it to parse Unreal Engine blueprints, enabling Claude to identify errors. As the game development progressed, the author expanded Claude's capabilities to include animation montages and graphs for better problem-solving. Recognizing the need for efficiency, the author taught Claude to write code and modify assets, significantly speeding up the development process. The author invested time in the toolkit, adding features like blendspace and control rig support and advanced debugging tools. Optimization was implemented to reduce token usage and improve efficiency. Finally, the author decided to release the toolkit as open source called the Unreal Engine LLM Toolkit.