About
Who we are
Lilith Semiconductor — Lilith Semi for short — builds open source silicon and the tools around it.
We build Chock for running AI agents safely against your code, Forge for getting real hardware on demand, and Harbor for assembling hardware designs in Dart.
Each one sits at a different point in the same workflow — the agent that writes the code, the board it runs on, and the libraries it pulls in. The thread running through them: building hardware should feel like building software.
- One team across agents, boards, and libraries
- Hardware development should feel like software development
- AI agents run inside a real sandbox, not a polite request to behave
- Tools we built because we wanted to use them
Founders
The two of us
Sebastian Kraus
Co-founder
Developer and entrepreneur working at the intersection of information security, infrastructure, and sustainability. Deep in the NixOS rabbit hole — happily lost, and not looking for a way out. Organized NixCon 2024 and 2025.
@Ra33it0Tristan Ross
Co-founder
Low level programmer — OS, Zig, and Linux. Committer to Nixpkgs and LLVM, contributor to Zig. Builds Chock, our sandbox-first harness for AI coding agents.
@RossComputerGuy
Building with agents, FPGAs, or Dart?
Tell us what you're working on and which of our tools you would reach for first. We will come back with questions and next steps.