believer-oss/Claireon

<p align="center"> <h1 align="center">Claireon</h1> <p align="center"> Model Context Protocol server for Unreal Editor automation </p> </p> <p align="center"> <a href="LICENSE"><img src="https://img.shields.io/badge/license-MIT-blue.svg" alt="License: MIT"></a> <img src="https://img.shields.io/badge/Unreal%20Engine-5.x-black?logo=unrealengine" alt="Unreal Engine 5"> <img src="https://img.shields.io/badge/platform-Win64-lightgrey" alt="Platform: Win64"> <img src="https://img.shields.io/badge/MCP-Streamable%20HTTP-green" alt="MCP: Streamable HTTP"> <img src="https://img.shields.io/badge/status-beta-orange" alt="Status: Beta"> </p>

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Claireon is an Unreal Engine editor plugin that runs a Model Context Protocol (MCP) server inside the editor, exposing hundreds of editor automation tools for AI-assisted development workflows behind a deliberately small MCP surface (tool_search + python_execute). It enables AI assistants like Claude Code to read, search, inspect, and edit Unreal assets directly.

Features

• Hybrid Tool Discovery — tool_search ranks the full tool catalog with SQLite FTS5 + a vendored embedding model, so agents find the right tool without a giant tool list
• Blueprint Editing — Read and modify Blueprint graphs, properties, components, and connections
• Animation Authoring — Anim sequences, montages, notifies, blend spaces/aim offsets, and AnimBP graphs
• State Tree Editing — Inspect and edit State Tree assets, nodes, and runtime state
• Behavior Tree & EQS — Inspect and edit Behavior Trees, Blackboards, and Environment Query Systems
• Widget Blueprint Editing — Read and modify UMG widget hierarchies and animations
• Niagara & PCG — Inspect and edit Niagara particle systems and PCG graphs
• Data Tables — Full CRUD operations on Data Table assets with CSV/JSON import/export
• Audio & MetaSounds — Sound pl