Add unreal-engine-skills-for-claude-code plugin (#3396)

.claude-plugin/marketplace.json

@@ -3091,6 +3091,20 @@
       },
       "homepage": "https://github.com/UI5/plugins-coding-agents"
     },
+    {
+      "name": "unreal-engine-skills-for-claude-code",
+      "description": "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.",
+      "author": {
+        "name": "Epic Games"
+      },
+      "category": "development",
+      "source": {
+        "source": "url",
+        "url": "https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin.git",
+        "sha": "766fb42370d9e251f7524fffb12cfdbc5b11a426"
+      },
+      "homepage": "https://dev.epicgames.com/documentation/unreal-engine/unreal-mcp-in-unreal-editor"
+    },
     {
       "name": "valtown",
       "description": "Build and deploy on Val Town. Bundles the Val Town MCP server and platform skills (HTTP vals, cron/intervals, SQLite, email, OAuth, React UI, third-party integrations, templates).",