ClaudusBridge
A Real AI Coding Agent, Inside Unreal Engine

ClaudusBridge embeds a full AI coding agent directly inside the Unreal Editor and gives it (or any external MCP client) 900+ tools to drive your project. Open the in-editor terminal, sign in with your own Claude, ChatGPT/Codex, or Gemini account, and start building Blueprints, materials, Niagara systems, UMG, levels and more in plain language. No API keys. No cloud middleman. 100% local.
Documentation: https://galidar.com/claudusbridge

The Agent Lives in the Editor

The new ClaudusCode module ships an in-editor Slate terminal plus a bundled agent runtime (a Claude Code fork that also drives ChatGPT/Codex and Gemini). It launches headless via your system Node install and is driven over the Agent Client Protocol (ACP) by a native C++ client. The terminal is a real PTY (ConPTY on Windows, forkpty on Mac/Linux), so the agent runs exactly as it would in any shell, but with full access to Unreal.

• Your accounts, your sessions - sign in with Claude / ChatGPT / Gemini logins. No API keys to manage or pay for separately.

• Multi-provider - one agent, switchable across Anthropic, OpenAI and Google models (e.g. Opus, GPT-5.x, Gemini).

• 100% local - the agent and the bridge run on your machine. Your project never leaves it.

900+ Tools, 65+ Toolsets

ClaudusBridge surfaces 900+ MCP tools across ~65 toolsets generated from Unreal's own reflection system, plus 5 native plugin toolsets (Multi-User, Asset, Level, Image, Chess) and your own author-able ToolLibrary Blueprints. The agent can:

• Create and edit Blueprints, Materials, Niagara, UMG, Sequencer and assets

• Build and modify levels, spawn and arrange actors, save maps

• Inspect and manipulate textures and images

• Drive Multi-User (Concert) collaboration sessions

• Run any tool exposed through Unreal's toolset architecture

Works With Any MCP Client

You are not locked into the embedded agent. ClaudusBridge runs a standard Model Context Protocol server over HTTP at 127.0.0.1:3000/mcp (JSON-RPC). Connect Claude Desktop, Cursor, Windsurf, VSCode, Gemini, or Codex and drive the same 900+ tools. The plugin can even write the MCP client config for you.

To avoid flooding clients with hundreds of tools, the server defaults to tool-search mode: lightweight list_toolsets / describe_toolset / call_tool meta-tools let the agent discover and invoke tools on demand. Eager mode (every tool registered up front) is available if you prefer.

Multi-User Collaboration With Presence

Drop the agent and a human into the same Concert session as separate participants, each with their own presence avatar. ClaudusBridge reuses Unreal's existing Multi-User client and auto-configures it at startup - no engine fork, no second client. Watch the agent work alongside you in real time.

Cross-Platform

Built for Windows, Mac, and Linux on Unreal Engine 5.8. The agent runtime ships inside the plugin - only a system Node install is required.

What You Get

• Embedded AI coding agent (Claude / ChatGPT / Gemini) running inside Unreal

• In-editor terminal with a native ACP drive path for programmatic control

• 900+ MCP tools across 65+ toolsets, usable by the agent or any MCP client

• Multi-User collaboration with agent + human presence avatars

• User-authorable ToolLibrary Blueprints to add your own tools

• No API keys, no cloud dependency - your own logins, fully local

By Galidar Studio. Sign in with your own AI accounts; standard provider terms apply.