Show HN: Claireon – MCP Server for Unreal Editor (github.com)

Claireon, a new plugin for Unreal Engine, introduces a Model Context Protocol (MCP) server designed to enhance automation within the Unreal Editor, significantly benefiting AI-assisted development workflows. By providing a streamlined interface that exposes a plethora of editorial automation tools, Claireon enables AI assistants, like Claude Code, to efficiently read, modify, and interact with various Unreal assets—from blueprint graphs to animation sequences. This functionality enhances the creative capabilities of developers, potentially accelerating the game development process. The plugin employs a hybrid tool discovery mechanism using SQLite FTS5 and a vendored embedding model to help users find the right tools quickly without sifting through extensive lists. Key features include read and edit capabilities for complex Unreal Engine elements such as state trees, behavior trees, and data tables, alongside robust asset management and performance profiling. Furthermore, Claireon offers seamless integration with Claude Code for script execution and live interaction, marking a significant leap toward more intelligent and interactive game development environments, especially in Unreal Engine 5.x.