Privacy Policy

1. Scope

This Privacy Policy applies to Lumen AI, a browser sidebar extension for Google Chrome and Microsoft Edge, and to the website that links to it. It explains what information the extension handles, where it is stored, and which third parties are involved. Lumen AI is distributed through the official Chrome Web Store and Microsoft Edge Add-ons store.

2. Information we do not collect

We do not collect, receive or store your chat conversations, prompts, AI responses, browsing history, web page contents, selected text, screenshots, images, notes, or the files you save from a page. There is no account, no sign-up and no login.

This website contains no analytics, no tracking pixels, no advertising cookies and no third-party scripts. We do not build profiles and we do not use your data for advertising.

3. What is stored on your device

Your AI API key, provider and model preferences, sidebar settings and local notes are stored locally in your browser's extension storage, on your own device. We do not hold a copy of these items. You can remove them at any time by clearing the extension's storage or by uninstalling the extension, following your browser's own instructions.

4. How AI requests are handled

When you configure your own API key, AI requests are sent from the extension directly to the AI service provider you selected, using that key. We do not operate an intermediary server for these requests and we do not receive their content.

The content you send to that provider is processed under that provider's own privacy policy and terms. Lumen AI is not affiliated with any AI provider; please choose a provider you trust and review its terms before entering your key.

5. Promotional free trial credits

New installs may include an optional offer of free trial credits for selected AI models. This offer is separate from the bring-your-own-key mode described above.

The credit amount, validity period, eligibility and supported regions are shown inside the extension before you activate the offer. If a separate service provides those credits, it is identified there together with the terms that apply. If you do not activate the offer, or after the credits are used up, the extension continues to work with your own API key.

The extension itself is free. We do not sell API access and we do not charge a subscription fee. AI usage beyond the credits is billed by your own API service provider under its own pricing.

6. Third-party services

The extension is installed from the Chrome Web Store or Microsoft Edge Add-ons store. Those stores are operated by Google and Microsoft and their own policies apply to the installation process.

AI providers you select are independent third parties. This website's Share buttons only open the sharing page of the service you choose; the website itself does not transmit any data to them unless you click.

7. Cookies, analytics and tracking

Neither this website nor the extension uses advertising cookies, analytics scripts, tracking pixels, device fingerprinting or any similar measurement technology. We do not store a language preference in a cookie: the language is passed in the page URL.

8. Data retention and deletion

In the bring-your-own-key mode we receive no content, so we hold nothing to retain or delete. Local data described in Section 3 stays on your device until you clear the extension's storage or uninstall the extension. Your API key can also be removed at any time from the sidebar settings.

9. Security

Keeping your API key safe is important. Store it only in your own browser, never share it, and revoke it with your provider if you suspect misuse. Your browser's own extension storage protections apply to data kept on your device.

10. Children's privacy

Lumen AI is not directed to children under 13 and we do not knowingly collect personal information from children. If you believe a child has provided information, contact us using the address below.

11. Changes to this policy

We may update this Privacy Policy when the extension or the law changes. The current version is always available at this page, with the effective date shown at the top. Continued use of the extension after an update means you have read the revised policy.

12. Contact us

For questions about this Privacy Policy, data handling, or to report a problem, email us at the address below. We aim to reply within a reasonable time.