From the README:

Cloudflare OS is an "operating system" for AI productivity originally developed for use inside Cloudflare. A large portion of Cloudflare's workforce -- from engineering to sales and everything in between -- uses Cloudflare OS every day to help them do their jobs.

This is not a traditional computer operating system. We use the term "operating system" in two senses:

• An operating system for the company to be productive with AI, in a way that is safe, so that the security team can sleep at night.

• An operating system for AI workloads, analogous to the sense in which a traditional operating system manages compute workloads.

From Kenton Varda's Twitter post:

This is a remake of Sandstorm[.]io, my startup from 10 years ago, except this time built on Cloudflare Workers (the platform I've spent the last 9 years building) and deeply leveraging AI. This is more or less the culmination of my secret 10-year master plan.

This is a full-on personal app vibe coding platform, in which the sandbox is so secure that you can pretty much go wild -- the AI cannot introduce a significant security bug. We believe a company's security team can feel comfortable giving non-technical users permission to vibe code and then sleep soundly at night.

How is that possible? It's the Sandstorm security model, revisited. [...]