tl;dr: Cloudflare has open-sourced Cloudflare OS, a platform giving employees browser-based AI agent workspaces grounded in company-specific context, skills, and internal systems. It introduces "Gatekeepers" for fine-grained resource access control (replacing broad API keys) and tracks every resource an agent observes to prevent data leaks through shared apps or outputs. Each app runs as a full-stack Cloudflare Worker with its own Durable Object storage, and all model calls route through AI Gateway for cost/budget control.