Privacy

You can browse the catalogue and open resource pages without signing in. Those pages do not require an account and are served the same way to everyone.

Sign-in is handled through Google. When you sign in, Google provides basic account information — your name, email address, and profile image — which Lucas Library uses to identify your account and to show your signed-in state. We do not receive or store your Google password.

Lucas Library sets the cookies required to sign you in and to keep your session working as you move between pages. These are functional authentication cookies, not advertising cookies.

When you save a resource, it is recorded on the server and associated with your account so your Shelf is available to you the next time you sign in. Saving and removing resources only affects your own Shelf.

The Librarian is an AI assistant available to signed-in users. When you use it, your prompt and the conversation context are sent to our server and processed by a third-party AI service to generate a reply. To answer, the Librarian can read the Lucas Library catalogue and your own Shelf through internal tool calls.

When a question genuinely needs current information beyond the catalogue, the Librarian can perform a web search, which sends the search query to an external search service and returns external results.

To operate the service, Lucas Library stores data such as:

• basic account identity from Google (name, email address, profile image) and sign-in sessions
• the resources you have saved to your Shelf
• the curated catalogue content
• Librarian conversation threads and prompts
• basic counters used to apply usage limits to the Librarian

This is kept in our application database so the product works across visits and devices. This page does not state a fixed retention period or a self-service deletion workflow, because those are not currently defined.

The catalogue links to websites, repositories, and tools that are owned and operated by other people. Those external sites have their own content and privacy practices, which Lucas Library does not control.

This page may be updated when the product changes. The date at the top reflects the most recent update.