An operating system for safe AI
LUMEN OS.
A lightweight operating system where artificial intelligence helps — but holds no power. The AI only suggests, a human makes every decision, and every step can be traced.
LUMEN
Hello, I'm LUMEN. Tell me what you need — I'll find verified programs. Nothing gets installed without your click.0.26 GB
of memory after boot
1 core
and 1 GB of RAM is enough
~12 s
from power-on to the LUMEN window
Debian 13
a stable, proven foundation
In developmentMeasured in a virtual machine, September 2026.
AI assists, a human decides
Rules that elsewhere live only in documentation are enforced by LUMEN's architecture. The model physically cannot get around them.
AI only suggests
The language model can search and present offers. It has no tool to install, delete or run anything — that only happens when the user clicks.
Separated privileges
The LUMEN window and the AI run as a regular user. Only a small helper without AI holds admin rights, accepts a fixed set of operations and refuses everything else.
Verified sources only
Software comes from Debian's signed repositories and from Flathub. A program the model “makes up” is verified before display — otherwise it never appears.
Audit log
Every offer, installation and system change is written to a log kept by the administrator account. Neither the AI nor the user can rewrite it.
Stop button
“Stop AI” disconnects the model instantly. The system keeps working in a fallback mode that understands keywords and has a catalogue of verified programs.
Your data stays home
Experience memory, history and profile are stored on the computer. A local model can replace the online one — then nothing leaves the machine.
One window instead of menus
The whole system is driven by conversation: “I need a PDF program”, “I want to play Steam games”, “play the news”. LUMEN finds verified programs with a description and installs them only after a click. Voice control works too.
Security watchdog
After boot and then every six hours it checks updates, ports open to the network, admin accounts, new programs with elevated rights, failed logins and the firewall. Fixes are offered in a single click.
System & security
CPU, memory and disk at a glance, running apps and services. Every program shows where it came from and what permissions it has. System components are protected and cannot be stopped by accident.
Full-featured gaming
Steam with Proton, Heroic and Lutris. LUMEN checks in advance whether a game will run (ProtonDB, anti-cheat titles), installs NVIDIA and Vulkan drivers and switches on game mode while you play.
Protected from the first boot
- ▸Firewall on right after installation — incoming connections are dropped
- ▸A prompt to change the default password until the user deals with it
- ▸Automatic security updates enabled out of the box
- ▸Remote SSH access only on explicit request, key-only and with brute-force protection
- ▸The watchdog reports every new port opened to the network
What it's built on
- Base
- Debian 13 and the lightweight Openbox window manager
- Software
- Debian repositories (apt) and Flathub
- Online AI
- Groq or OpenRouter with your own key
- Local AI
- Ollama or a bundled model downloaded with a checksum
- Voice
- On-device speech recognition (whisper.cpp) or online
- Installation
- Live USB for BIOS and UEFI, install to disk
- Language
- Czech and English, commands understood in both
- Security
- nftables, fail2ban, unattended-upgrades
From a game to reality
LUMEN's look comes from our game ECHO, a story-driven adventure about artificial intelligence. LUMEN also takes on the question the game asks: who should have the final word. Here, it is always a human.
Want to try LUMEN OS?
The system is in development. We're looking for early users and partners — tell us what you'd expect from it.
Get in touch