Lcu

Lcu is an open source computer-use runtime connector for coding agents.

LCU gives coding tools the original computer-use runtime from the installed ChatGPT desktop app without requiring any sign-in. It handles setup and integration while the app supplies the runtime and instructions. The software works with Claude Code, Codex CLI, Pi, and other clients through a shared JavaScript client. It reads windows, clicks, types, and takes screenshots using the original instructions and approval prompts. The project is open source and MIT licensed for macOS and Linux systems.

Lcu at a glance

Best for: Software engineer
Runs on: macOS, Linux, CLI, open source
Pricing: Open source, MIT licensed.
Released: September 2026
Category: AI coding tool
Website: lcu.amontlabs.com

Key features

Run original computer-use runtime
Read windows and take screenshots
Click and type on desktop
Control Chrome through official extension
Preserve original approval prompts
Support Claude Code, Codex CLI, and Pi
Integrate other tools via shared client

Use it for

Give coding agents computer control
Take screenshots of desktop windows
Interact with browser tabs via extension
Automate tasks without app sign-in

Companions

Tools that articles about Lcu recommend using with it, each with its job.

ChatGPT — Built to work with ChatGPT.
Canva — Create and edit designs and slides inside the chat.
Zapier — The largest app catalog for no-code automations and agents
Firecrawl — Provides direct web data access for AI agents with open source flexibility.
ElevenLabs — Text-to-speech, voice cloning and sound from the chat.
Runway — Leading video model plus editing, upscaling and an agentic collaborator

Alternatives to Lcu

Lcc — Cuts token counts significantly without losing exact session details.
OpenCode — Works with 75+ model providers, local models, and existing subscriptions
jevgrep — Reduces coding agent costs by providing targeted, relevant repository context.
Coucou — It provides open-source, real-time agent monitoring and approvals directly from the screen notch.
LangChain — Compose exactly the agent your use case needs from model, tools, prompt, and middleware.
gptel — Direct LLM interaction inside the Emacs text editor.
cmux — It features vertical tabs, notification rings, and split panes for AI coding.
TODO app + OpenCode terminal, in the tab — Runs the app, dev server, and AI agent completely inside a browser tab.
ECC — It provides a shared operating layer and security scanning across multiple coding agents.
Agent Archive — Hand off coding sessions between Claude Code, Codex, and Cursor across machines.
Agent Pets — Approve agent permission prompts and send replies directly from any browser tab
cc-haha — Local-first cross-platform desktop workspace with multi-agent support and built-in tools.

All Lcu alternatives