lcu
The original computer-use runtime from your installed ChatGPT desktop app, in Claude Code, Codex CLI and Pi. No Codex sign-in.
lcu launched on 22 September 2026. It ranked #42 on Daily Launch on 21 October 2026 with a Launch Score of 45, from +303 stars on 21 Oct on GitHub. It moved down 11 places from the day before.
What is lcu?
LCU exposes Codex's original computer-use runtime to your harness without requiring Codex authentication. The official ChatGPT desktop app must still be installed locally: it supplies the runtime and instructions, while LCU handles setup and harness integration. The first time an agent controls an app (Zed, Notes, Safari), the computer-use runtime asks you to allow it.
From its README on GitHub
lcu is a repo by amontlabs on GitHub. It is written in JavaScript and released under the MIT license.
How to get lcu
Get it from its repository on GitHub.
Image from lcu.amontlabs.com
In its own words
Codex computer use, decoupled from the app, for usage inside any harness.
From its GitHub repository