TL;DR: Turnstone is a Y Combinator Winter 2026 startup Work with agents that already know you, currently active with a team of 2.
Work with agents that already know you
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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.
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Yes. Turnstone was funded by Y Combinator in the Winter 2026 batch. Work with agents that already know you
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-ex…
Turnstone was part of Y Combinator's Winter 2026 batch.
Turnstone has a team of 2 people according to Y Combinator's directory.
Turnstone is currently listed as Active with a team of 2 in Y Combinator's directory.
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