CSA STAR Registry

CS Taller S.A.S. (Medellín, Colombia) builds Author OS, a multi-tenant AI operating system for firms that sell and deliver projects, starting with architecture, design and construction. Author OS runs the whole firm in one product: WhatsApp CRM with an AI sales assistant, AI-built quotes, online signing that creates the project, client portals, finance and receipts, and AI agents for admin work. It runs on Railway and Cloudflare; each firm's data is isolated with Postgres row-level security, credentials are encrypted with key rotation, and files are served only through short-lived signed URLs. Security page: https://os.authordesign.com.co/legal/seguridad