Turnstone
AI teammates that run on the subscriptions you already pay for.
Recommended for
- Pre-Seed
SSIE
Stage Fit Recommendations
Following data shows why Turnstone is recommended for listed teams. The Fit Score represents the percentage fit of Turnstone to each company stages, as calculated by the SSIE.
Stage
Fit Score
Fit Reasons
Pre-Seed
$0–$10k MRR
83- Agents hand tasks and results to each other
- Runs locally as a Mac desktop app
- Other agents can assign work through MCP
- API keys are encrypted on your Mac
- Users can request account data deletion
- Free plan covers about 2 users at no cost
Description
Turnstone is an AI teammate platform that creates agents which run on your Mac using the AI subscriptions you already pay for. It supports ChatGPT, Claude, Gemini, Grok, and OpenRouter as model providers. Users tell the first agent what they are working on, and it sets up an agent for each part of the job. Each agent learns how you prefer the work done and comes to you when it needs a decision. Turnstone includes ready-made agent types like chief of staff, outreach, launch writer, signups, and engineer. Agents have persistent memory and free connectors to apps such as Gmail. Turnstone is free to use on your Mac with your own AI subscription or API key, with a $49/month cloud add-on coming soon for around-the-clock operation. It was backed by Y Combinator and is the #2 product of the day on Product Hunt.
Pricing
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Live within 24 hours.
Free. No credit card.
Reviewed by a human. SSIE Fit Scoring.
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