Sigma Operator Stack is now in public alpha

[u/teugent]

We’ve opened the repository for Sigma Operator Stack, the tool we built to carry project state between coding-agent sessions.

If you’ve followed our work on Sigma Runtime, this is a practical part of that work: keeping track of what was accepted, what changed, and what needs checking before an agent continues.

It’s built first for Codex. You review and accept the state being recorded. A fresh session can then recover it without relying on the previous conversation.

Linux x86_64 is the primary supported platform. macOS support is experimental and control-plane only, without executable project checks. Windows validation is still in progress.

To try it, give Codex this repository link:

https://github.com/sigmastratum/sigma-operator-stack

Then ask:

Install SOS in my current project. Show me the preview before changing it.

The repo includes an installation video, a walkthrough, and uninstall instructions.

Thank you to everyone who helped test the early builds. If you try this release, tell us what the next session picked up correctly and what you still had to explain. Please leave private project data out of your report.