kumo

Name: kumo
Author: Max Ludovico Hofer

Describe it, and your AI builds it in Unreal. Every asset type, a fraction of the tokens.

The AI copilot for Unreal Engine

Describe what you want, and the AI builds it: new assets, edits to existing ones, or answers about what is already in your project. Every request becomes operations that Unreal validates before they run, so what lands in your Content Browser compiles, opens in the right editor, and plays in PIE.

Create BP_Pickup as an Actor in /Game/Pickups. Add a StaticMeshComponent as root and a SphereComponent for overlap. On BeginPlay, print “Pickup ready”. On the sphere’s OnComponentBeginOverlap, call a custom function Collect.

100%Engine coverage

Up to 12×Fewer tokens

UE 5.7–5.8Tested targets

Win·Mac·LinuxPlugin platforms

23Languages

FreePlugin and app

Highlights

Lives inside the editor

A chat panel and a full terminal share a tab beside your viewport. Ask, build, and read the engine log without switching windows.

Every Unreal asset type

If Unreal can author it, kumo can create, edit, and inspect it: graphs, materials, VFX, audio, UI, gameplay systems, cinematics, and world building, across the engine and its plugins. New nodes land in a tidy auto-layout. Coverage report →

Costs far less to run

Claude gets only what each task needs. The same “create a Widget Blueprint” task took ~1,500 tokens vs ~3,900–9,600 with Epic’s UE 5.8 MCP plugin. See the measurement →

Acts on your team's tools

Connect Discord and GitHub: announce a build, ping a bug’s owner, triage issues, or read a PR’s diff and CI logs. Credentials stay on your machine. Integrations →

Your wiki, in its own app

The desktop app opens the project wiki and the chat without Unreal, so artists and designers can read and search everything the team knows. It updates itself. Get the app →

Works with the editor closed

Drive it from a terminal or CI with Claude or any CLI-capable AI. Unreal runs headless, performs the operation, and exits.

Knows the Unreal API

A per-domain API reference and guides for GAS, replication, motion matching, Mover, Substrate, PCG, World Partition, and more. The AI reads the right one before it builds.

Your conventions on top

Sensible defaults for naming, GAS, multiplayer, and performance. Drop a CLAUDE.md or AGENTS.md at the project root and your rules win, with no fork.

Install the plugin Running in your project in under five minutes.

Get the desktop app The wiki and the chat in their own window. No Unreal needed.

Pricing Free to use. Two optional features are a subscription.

Made in Italy by Max Ludovico Hofer, alongside the games of Fabbrica Elettrica. About →