Turnstone
Work with agents that already know you
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About
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. It all lives on your machine and runs on any model you already pay for. Ask your agent once, and it's done. Turnstone is a Y Combinator company (Winter 2026). YC-listed status: Active.
- Website
- myturnstone.ai
- Location
- San Francisco, CA, USA
- Added via
- web
- Ownership
- unclaimed
Where to go
Products
- Turnstone — Free on-device AI workspace that connects your apps and local files into a shared second brain for all your AI agents and models. · App · Free
Links
- Y Combinator profileycombinator