Last updated: June 12, 2026
Your email address (used for magic-link sign-in and, if you join the waitlist, product updates), the books and chapters you create, and basic anonymous usage analytics (page views via self-hosted analytics — no advertising trackers).
Books you create are private to your account. We don't read, share, or train on your content. You can export everything (EPUB, PDF, HTML) at any time.
If you add your own Anthropic API key, it is encrypted at rest with AES-256-GCM and used only to generate content you request.
We use Vercel (hosting), Railway (database), Resend (transactional email), and Anthropic (AI generation). Your data is shared with these providers only as needed to run the service.
Want your account or data deleted, or have a question? Reach us through the contact form at charleslukowski.com.