Cookie Policy

Last updated: 28 March 2026

1. What Are Cookies

Cookies are small text files placed on your device when you visit a website. They are widely used to make websites work efficiently, provide information to site owners, and improve the user experience.

Similar technologies include local storage and session storage, which serve comparable purposes within your browser.

2. How Lumin Uses Cookies

Lumin uses a minimal set of cookies, primarily for authentication and essential platform functionality. We do not use cookies for advertising, behavioural tracking, or marketing.

3. Cookies We Use

3.1 Strictly Necessary Cookies

These cookies are essential for the platform to function. They cannot be disabled without breaking core functionality. No consent is required for strictly necessary cookies under applicable regulations.

Cookie	Provider	Purpose	Duration
sb-*-auth-token	Supabase	Authentication session token that identifies your signed-in session	Session
sb-*-auth-token-code-verifier	Supabase	PKCE code verifier for secure OAuth flow	Session

3.2 Functional Cookies

These cookies support non-essential but useful features. Lumin currently does not set any functional cookies beyond the strictly necessary ones listed above.

3.3 Analytics and Performance Cookies

Lumin does not use third-party analytics cookies (such as Google Analytics). Our error tracking service (Sentry) may store minimal local data to correlate error reports, but this does not involve cross-site tracking.

3.4 Advertising and Tracking Cookies

Lumin does not use any advertising or tracking cookies. We do not serve ads, participate in ad networks, or share cookie data with advertisers.

4. Third-Party Cookies

During the Google sign-in flow, Google may set its own cookies on your device. These are governed by Google’s Privacy Policy and are outside of Lumin’s control. We do not have access to or control over cookies set by Google during the OAuth authentication process.

5. Local Storage and Session Storage

In addition to cookies, Lumin may use your browser’s local storage or session storage for:

Caching authentication state to reduce unnecessary network requests
Storing UI preferences (e.g., sidebar state) for a smoother experience

This data remains on your device and is not transmitted to our servers.

6. Managing Cookies

You can control and delete cookies through your browser settings. Most browsers allow you to:

View which cookies are stored on your device
Delete individual or all cookies
Block cookies from specific or all websites
Set preferences for how cookies are handled (e.g., block third-party cookies)

Please note: If you block or delete strictly necessary cookies (the Supabase authentication cookies listed above), you will not be able to sign in to Lumin or use the platform.

For instructions on managing cookies in your browser, refer to your browser’s help documentation.

7. Do Not Track Signals

Lumin does not track users across third-party websites and does not respond to Do Not Track (DNT) browser signals, as there is no industry-standard interpretation for DNT. However, since we do not engage in cross-site tracking, the practical effect is the same regardless of your DNT setting.

8. Changes to This Policy

If we introduce new types of cookies (e.g., analytics), we will update this policy and, where required, obtain your consent before setting non-essential cookies. Material changes will be communicated through a notice on the platform.

9. Contact Us

If you have questions about our use of cookies, contact us at:

contact@lumin.guru