Loomle MCP for Unreal connects AI coding agents such as Codex and Claude to your Unreal Engine editor through a local MCP bridge.

It helps agents inspect and edit real UE projects using tools that match Unreal Engine semantics instead of brittle screen automation or guessed Python calls.

Included capabilities:

- Blueprint graph, member, class, palette, node, and compile workflows

- Material graph, node, palette, layout, and compile workflows

- PCG graph, palette, node settings, parameters, layout, and compile workflows

- UMG WidgetBlueprint palette, tree, widget inspect, layout, and compile workflows

- Asset create, inspect, and edit workflows

- Project attach/status, editor context, logs, diagnostics, profiling, and play session helpers

This Fab package includes the Unreal Editor bridge plugin and the Python MCP server source used for Fab installation. Users who already use the native Loomle CLI can continue using it with this plugin.

LOOMLE is local-first and open source under the MIT License.

Documentation: https://loomle.ai

Source: https://github.com/loomle/loomle

Notes:

- Editor-only plugin. It is not a runtime gameplay system.

- Requires Unreal Editor to be running when an AI agent connects.

- Requires an MCP-compatible AI host such as Codex or Claude.