Unreal Engine Skills for Claude Code

Claude Code: /plugin marketplace add anthropics/claude-plugins-official → /plugin install unreal-engine-skills-for-claude-code@claude-plugins-official

Unreal's ToolsetRegistry exposes hundreds of editor tools across more than thirty toolsets: actors, blueprints, materials, Niagara, Control Rigs, Sequencer, State Trees, widgets, the Gameplay Ability System and automation testing. Handing all of that to a model at once would fill the context and invalidate the prompt cache, so the server publishes three meta-tools instead — list_toolsets, describe_toolset and call_tool — and the rest is discovered as needed. The editor has to be running with the ModelContextProtocol and AllToolsets plugins enabled and the server started from the console; without AllToolsets the connection succeeds but exposes nothing at all. A session-start hook tags the repository as an Unreal project so the agent defaults to UObject, Slate and UHT conventions.