Every company knows when it revoked access. None knows when access stopped.

Every company knows when it revoked access. None knows when access stopped.

I built this for the All Things Agentic Hackathon, and I wrote this post for the purposes of entering that hackathon. Code: github.com/NexuChat/parallax

The chore I was actually trying to kill

I maintain a web application with two roles, two languages, one of them right-to-left, a dark theme, and three viewport sizes. Every release, I would open it as the owner, click through, sign out, sign in as a member, click through again, switch to Arabic, reload, shrink the window, reload — and try to remember what a page had looked like ten minutes earlier.

The worst defects never survived that process, because they are not visible in any single session. A member opening a page they should have been denied sees nothing wrong. Nothing on the page says "you should not be here." The information is not in their session at all. It is in the difference between their session and the owner's.