Turnstone is the AI workspace where your agents already know you. Connect your apps (e.g. email, calendar, Slack, Drive) and your local folders. Turnstone turns all of it into your second brain and continuously updates it. Spin up agents (e.g. chief of staff, research, GTM) that all share that brain, so you stop re-explaining yourself and start getting real work done.
From the launch
Crow lets users control your app through chat. Connect it to your product, and users can type what they want instead of clicking through menus. Turnstone: YC Winter 2026: Crow - Let users control your app through chat
