MCP (Model Context Protocol) server for Unreal Editor. Exposes project context to AI tools via HTTP (:45000) and WebSocket (:55000).

Key features:

- Editor-only MCP server (opt-in, default off)

- Capability system: 100+ atomic editor operations (assets, blueprints, actors, widgets, PIE, Lua, GAS, etc.)

- Two exposure modes: SearchMode (3 meta tools) and MultiTool (full capability list)

- Compatible with IDE proxies: NexusVSCode, NexusRider, NexusDesktop

- Supports UE 4.26 through UE 5.x (version-gated optional features)

Code Modules: NexusLink (Editor), NexusLinkTests (DeveloperTool)

Blueprints: 0 | C++ Classes: 220+ | Network Replicated: No

Dev Platforms: Windows| Target Builds: N/A (editor-only)

Dependencies: WebSocketNetworking (required); GameplayAbilities, Niagara, StateTree/MVVM (UE5.5+), UnLua (optional)

Example Project: https://github.com/bytepine/NexusUnreal (plugin via submodule, not bundled)

Notes: MCP off by default in Editor Preferences. Optional capabilities compile-gated when host plugins absent.

byteyang

Product types