通过模型上下文协议，通过Claude Code控制UEFN（Fortnite的Unreal编辑器）。

• 110 个工具：actors、资源、关卡、视口、材质、Niagara、动画、静态网格、数据表、资产验证、设备 @editable 布线、编辑器中播放控制、StaticMeshActor 散布、Verse 源代码内省、Verse 编译/推送、Verse 代码导航、UEFN 会话状态/启动以及任意 Python 执行
• Zero C++编译 — 纯Python，兼容UEFN版本
• 主线程安全 — 所有通过编辑器跳回调调度的unreal.*调用
• 自动启动 — 当项目打开时，监听者自行启动（参见自动启动）
• 崩溃恢复 — UEFN 会话工具读取编辑器状态并在崩溃后重启 UEFN;参见 UEFN 会话和崩溃恢复
• 无输入仿真 — 服务器从不发送鼠标或键盘输入;难以撤销的工具被标记为实验性

0.5.0 有什么新内容

• UEFN 会话（uefn_session.py，3个工具）：uefn_status（编辑日志中的只读状态，进程和 ports）， uefn_launch_project（启动UEFN，打开项目，等待监听器;可以停止剩余的崩溃报告者

UEFN MCP Server

Control UEFN (Unreal Editor for Fortnite) from Claude Code via the Model Context Protocol.

Claude Code    MCP Server (mcp_server.py)    Listener (uefn_listener.py, inside UEFN)
                                   |--TCP 127.0.0.1:1962-->  UEFN VerseWorkflowServer   (verse_compile / verse_status / verse_push)
                                   |--stdio------------->  verse-lsp.exe                (verse_symbols / verse_hover / ...)
                                   '--files / Win32 ---->  editor log, settings ini, processes   (uefn_status / uefn_launch_project / ...)

• 110 tools: actors, assets, levels, viewport, materials, Niagara, animations, static meshes, data tables, asset validation, device @editable wiring, Play-In-Editor control, StaticMeshActor scatter, Verse source introspection, Verse compile/push, Verse code navigation, UEFN session status / launch, and arbitrary Python execution
• Zero C++ compilation — pure Python, works across UEFN versions
• Main-thread safe — all unreal.* calls dispatched via editor tick callback
• Autostart — the listener starts by itself when a project opens (see Auto-start)
• Crash recovery — the UEFN session tools read the editor state and relaunch UEFN after a crash; see UEFN session and crash recovery
• No input simulation — the server never sends mouse or keyboard input; tools that are hard to undo are tagged experimental

What’s new in 0.5.0

• UEFN session (uefn_session.py, 3 tools): uefn_status (read-only state from the editor log, processes and ports), uefn_launch_project (start UEFN, open a project, wait for the listener; can stop a crash reporter left over from a crash), uefn_set_load_on_startup. They send no mouse or keyboard input: when UEFN stops on the HUB, the user opens the project.
• [experimental] tag: 7 tools that are hard to undo or act outside the open level ask the user to confirm before each call. See Experimental tools.
• setup.ps1: one idempotent setup step for a new machine (-DryRun).
• Safety fixes (listener protocol 0.3.3): rotations are named axes {"pitch", "yaw", "roll"} (a documented [pitch, yaw, roll] list used to be applied as [roll, pitch, yaw]); the staticmesh_* tools stop calling the getters that crash UEFN 42.20. See Conventions.

Full list: CHANGELOG.md.

What’s new in 0.4.0

A community fork was merged into this repo: 79 new tools (materials, Niagara, animation, static meshes, asset management, data tables, validation, screenshots, device @editable fields, Play-In-Editor, scatter, Verse