# Epic's official Unreal Engine plugin for Claude Code is going viral, but it has been out since June > Epic's Unreal Engine Skills for Claude Code plugin is in Anthropic's official marketplace. It adds skills, a hook, and safety rules on UE 5.8's MCP server. Published 2026-10-18T13:25:18-07:00 · News · Canonical: https://news.littlewolflabs.com/posts/2026-10-18-epic-unreal-claude-code-plugin Epic Games' "Unreal Engine Skills for Claude Code" plugin lets Claude Code drive a running Unreal Editor. This one is official, not a fan project. The [source](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin) lives in Epic's GitHub account under an [MIT license](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin/blob/main/LICENSE), and [Anthropic's plugin page](https://claude.com/plugins/unreal-engine-skills-for-claude-code) lists it as made by Epic Games, under the display name "Unreal Engine MCP." It isn't new. Epic engineer Thomas Mansencal [announced it](https://x.com/ThomasMansencal/status/2069876819852141008) as an open-source companion plugin on June 24, 2026, and Anthropic [merged it into its official marketplace](https://github.com/anthropics/claude-plugins-official/pull/3396) on June 26. The current version, 3.1.1, [landed September 16](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin/commit/a6aa73ada02a9fb1f5415bec491f9942c519b297). It went viral on X this weekend, and Epic CEO Tim Sweeney [reposted](https://x.com/TimSweeneyEpic/status/2111787852925427942) one of those posts on Sunday morning. When we checked on October 18, the plugin page showed [871 installs](https://claude.com/plugins/unreal-engine-skills-for-claude-code). ## What the plugin adds The tools themselves come from Unreal. The [README](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin#readme) counts "hundreds of tools" across "30+ toolsets," and they come from UE 5.8's built-in [Unreal MCP server](https://dev.epicgames.com/documentation/unreal-engine/unreal-mcp-in-unreal-editor) once you enable its ModelContextProtocol and AllToolsets plugins. The Claude Code plugin adds instructions on top: - **An `unreal-mcp` skill.** It [teaches Claude](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin/blob/main/skills/unreal-mcp/SKILL.md) how to find and call those tools, plus safety rules: save before and after any bulk change, wait for compiles to finish, check every result, and watch for Play-in-Editor. Version 3.1.1 [replaced a blanket ban on parallel calls](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin/commit/a6aa73ada02a9fb1f5415bec491f9942c519b297): Claude now runs calls side by side only for independent work and does one at a time when they touch the same asset. Epic's server docs still say [clients should not issue overlapping calls](https://dev.epicgames.com/documentation/unreal-engine/unreal-mcp-in-unreal-editor#what-is-the-model-context-protocol). - **Two authoring skills.** [create-toolset](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin/blob/main/skills/create-toolset/SKILL.md) helps you write new tools in Python or C++, and [unreal-skill](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin/blob/main/skills/unreal-skill/SKILL.md) helps you write project Agent Skills. - **A SessionStart hook.** It adds a short note telling Claude it's in an Unreal project. It needs bash. - **Proxy instructions.** If your engine build includes Epic's [optional proxy](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin/blob/main/skills/unreal-mcp/references/setup.md#4-optional-install-the-proxy), Claude's connection stays open while the editor restarts. ## What it costs and what you need The plugin is free. Claude Code is not: it needs a [Pro, Max, Team, Enterprise, or Console account](https://code.claude.com/docs/en/setup), and the free plan doesn't include it. [Pro](https://claude.com/pricing) is $17 a month billed annually or $20 monthly. Max starts at $100 a month. - **Unreal Engine 5.8.** [Epic's docs](https://dev.epicgames.com/documentation/unreal-engine/unreal-mcp-in-unreal-editor) put the server there and mark it Experimental: "many features are incomplete or missing." The plugin README doesn't name a minimum version. - **The editor open, with the server started** (`ModelContextProtocol.StartServer` in the console). - **macOS, Linux, or Windows with Git Bash or WSL.** On plain PowerShell, the [README says](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin#platform-support) the tools still work, but the hook won't run. Using Cursor or Codex? Epic's server [writes configs for both](https://dev.epicgames.com/documentation/unreal-engine/unreal-mcp-in-unreal-editor#generate-a-client-config). The plugin is for Claude Code only. Epic's [security notes](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin#security) are blunt: the plugin gives Claude "broad, live access" to the editor, and one tool runs arbitrary Python. Epic says to commit your work before a long session and to avoid `--dangerously-skip-permissions`. ## Try it Set up the server with our [UE MCP guide](https://news.littlewolflabs.com/tools/unreal-engine-mcp-setup). Then, in Claude Code: ``` /plugin install unreal-engine-skills-for-claude-code@claude-plugins-official ``` Start the server from the editor console with `ModelContextProtocol.StartServer`, and commit your project first. ## Sources - [Epic's plugin repo and README](https://github.com/EpicGames/unreal-engine-skills-for-claude-code-plugin) - [Anthropic plugin page](https://claude.com/plugins/unreal-engine-skills-for-claude-code) - [Marketplace pull request #3396](https://github.com/anthropics/claude-plugins-official/pull/3396) - [Unreal MCP in Unreal Editor (Epic docs)](https://dev.epicgames.com/documentation/unreal-engine/unreal-mcp-in-unreal-editor) - [Claude pricing](https://claude.com/pricing) - [Claude Code setup](https://code.claude.com/docs/en/setup)