Hayba
An AI-agent toolkit for Unreal Engine.
What is Hayba?
Hayba is an open-source (MIT) toolkit that lets an AI agent work inside a live Unreal Engine editor. It works through one Model Context Protocol connection: a Node/TypeScript MCP server talks to a C++ editor plugin, and the agent places actors, builds PCG graphs, authors materials, Blueprints and UMG widgets, and checks its own work. With Plan Mode on (the default), an edit runs only after you approve it.
Why now?
AI agents can now call tools through the Model Context Protocol. The current source on main gives an agent 400+ Unreal Engine editor tools, found on demand.
Who builds it
Currently one developer (Badr) plus the community on GitHub. Built on the Model Context Protocol and Unreal Engine 5.7+.
License
A hosted assistant, Hayba Pro, is coming. The open-source toolkit is MIT-licensed and runs with your own model.