unreal engine skills for claude code

Unreal Engine Skills for Claude Code

Control Unreal Editor directly from Claude Code via MCP. Hundreds of tools exposed via Unreal's ToolsetRegistry across 30+ toolsets: actors, blueprints, materials, Niagara, Control Rigs, Sequencer, State Trees, widgets, Gameplay Ability System, automation testing, and more.

Contents

Skills

• `unreal-mcp` (skills/unreal-mcp) - instructions and workflows for driving the Unreal Editor via MCP.

Hooks

• SessionStart (hooks/unreal-context.sh) - injects a short note identifying the repo as an Unreal Engine project so Claude defaults to UE conventions (C++/UObject, Slate, UHT) and prefers the unreal-mcp skill. Runs on startup, resume, and clear.

Prerequisites

1. Unreal Editor with the ModelContextProtocol and AllToolsets plugins enabled (AllToolsets provides the tools; the server exposes none without it)
2. Editor running to execute tools, with the MCP server started. Run ModelContextProtocol.StartServer, or enable bAutoStartServer through skills/unreal-mcp/references/setup.md. The optional proxy can keep the client connection open while the editor is stopped.
3. A bash shell on `PATH` - required for the SessionStart hook (see Platform Support)

Platform Support

Supported: macOS, Linux, and Windows via Git Bash or WSL.

The SessionStart hook is a bash script (hooks/unreal-context.sh) invoked by hooks/hooks.json as bash ${CLAUDE_PLUGIN_ROOT}/hooks/unreal-context.sh. It requires a working bash on PATH:

• macOS / Linux: works out of the box.
• Windows: install Git for Windows (provides Git Bash) or run Claude Code under WSL. Native PowerShell without one of those does not have bash on PATH, and the hook will not run. The plugin's MCP tools still work; you just lose the short project-context note the hook injects at session start. There is no separate PowerShell companion script today.

Installation