Unreal MCP (Epic Games)

What it does

Ships inside the Unreal Editor as the ModelContextProtocol plugin, exposing toolsets that spawn actors, configure lighting, create material instances, inspect widgets, and run automation tests. Discovery is indirect — three meta-tools (list_toolsets, describe_toolset, call_tool) walk a registry of UToolsetDefinition-derived toolsets, so studios can register their own. For virtual production and previz this is the version that will not rot when the engine moves.

Connect

Connection is set up through the vendor's flow — follow the official connect instructions.

Tools you'll see

Field notes

Marked Experimental by Epic: 'use caution when shipping with it', APIs and data formats subject to change, many features incomplete. HTTP and Server-Sent Events only — stdio and WebSocket transports are not supported, so remote-agent setups need their own tunnel. It binds loopback at http://127.0.0.1:8000/mcp (port and path configurable) and rejects non-loopback Origin headers, but Epic states plainly there is 'no authentication layer; the plugin is not safe to expose beyond the local machine' — anything that reaches that port drives your editor. UE 5.8 only; on 5.5-5.7 or for hosted use, see the unreal-engine entry.

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