Privacy Policy

Effective date: May 19, 2026

This Privacy Policy explains how Metabook ("Metabook", "we", "our", or "us") handles information when you use the Metabook website, API, and the Metabook Chrome extension.

Information We Collect

Depending on how you use Metabook, we may process the following information:

• Account and authentication information: username, login credentials submitted to Metabook, authentication tokens, and related account identifiers.
• User-created content: books, chapters, outlines, story settings, character notes, location notes, prompts, selected webpage text, and other writing materials that you choose to save or process with Metabook.
• Service usage information: point balances, point usage records, API requests, model choices, selected writing skill settings, timestamps, and error logs needed to operate and troubleshoot the service.
• Payment-related information: if you purchase paid services, payment processing may be handled by third-party payment providers. Metabook does not store full credit card numbers in the Chrome extension.

Chrome Extension Data

The Metabook Chrome extension uses Chrome extension storage to save information locally on your device:

• Your Metabook login token after you sign in.
• Your selected default book.
• Your preferred AI model and writing skill settings for a book.
• Temporary selected text from a webpage when you use a Metabook right-click menu action.

The extension can send selected webpage text to Metabook only after you choose a Metabook context menu action and confirm how the text should be saved or used. The extension does not collect your general browsing history.

How We Use Information

We use information to:

• Authenticate users and keep accounts secure.
• Display and manage books, chapters, story settings, and writing materials.
• Generate, edit, and save AI-assisted writing content requested by the user.
• Track point balances and point usage.
• Maintain, debug, secure, and improve Metabook services.
• Provide customer support when requested.

What We Do Not Do

• We do not sell user data.
• We do not use Chrome extension data for advertising or creditworthiness decisions.
• We do not collect health information or precise GPS location through the Chrome extension.
• We do not collect full web browsing history through the Chrome extension.
• We do not load or execute remote JavaScript code in the Chrome extension.

Sharing of Information

We may share information with service providers only as necessary to operate Metabook, such as cloud hosting, AI model providers, payment processors, analytics or logging providers, and security tools. These providers are used to deliver the service and are not permitted to use the information for their own advertising purposes.

We may also disclose information if required by law, to protect rights and safety, or to investigate abuse or security incidents.

Data Retention

We retain account information and user-created content for as long as needed to provide the service, comply with legal obligations, resolve disputes, and maintain security. Local extension data remains on your device until you remove it, sign out, clear Chrome extension storage, or uninstall the extension.

Security

We use reasonable technical and organizational measures to protect user information. No method of transmission or storage is completely secure, so we cannot guarantee absolute security.

User Choices

• You may choose what selected webpage text to send to Metabook through the extension.
• You may sign out of the extension to remove the locally stored login token.
• You may uninstall the Chrome extension to remove extension-local data from your browser.
• You may contact us to request help with account or data questions.

Children

Metabook is not intended for children under 13. We do not knowingly collect personal information from children under 13.

Changes to This Policy

We may update this Privacy Policy from time to time. If we make material changes, we will update the effective date on this page.

Contact

If you have questions about this Privacy Policy or Metabook privacy practices, contact us at admin@metabook.ai.