TabClusterAI

Privacy Policy — Tab Cluster AI

Last updated: 2026-06-13

Tab Cluster AI (“the Extension”) is an open-source Chrome extension that groups your open tabs using either an on-device AI (Chrome’s Prompt API / Gemini Nano) or the Gemini API. This document describes what data the Extension handles, where it goes, and what it does NOT do.

TL;DR

• The Extension does not collect, transmit, or sell any data to the extension author.
• There are no analytics, telemetry, advertising, or remote-config SDKs.
• All settings are stored locally in your browser profile (chrome.storage.local).
• In on-device mode, tab data never leaves your browser.
• In Gemini API mode, tab titles and URLs are sent only to Google’s Generative Language API, using your own API key.
• In Organize by domain mode, no AI is used and nothing is sent anywhere.

Data the Extension reads

When you click “Analyze with AI” or “Organize by domain”, the Extension reads from the current Chrome window:

• The title of each open tab.
• The URL of each open tab.
• Whether each tab is pinned or already in a group (to exclude it).

Pinned tabs, chrome:// pages, and tabs already in a group are excluded.

Where the data goes

Mode	Where tab titles + URLs go	Stored on disk
On-device (Gemini Nano)	Processed locally by Chrome. Never leaves your browser.	No
Gemini API	Sent to https://generativelanguage.googleapis.com (Google) over HTTPS, using your API key.	No (only your API key + preferences)
Organize by domain	Not sent anywhere. Hostnames are compared locally.	No

The Extension makes no other network requests. It does not contact the author, any analytics service, or any third party.

Data stored locally

The following items are stored in chrome.storage.local for this Chrome profile only:

• Your Gemini API key (if you entered one).
• Your selected provider (on-device / Gemini API).
• Your selected Gemini model id.
• Your free-text “grouping preferences” note (if you entered one).
• A short diagnostic cache of Prompt API status (no tab data).

Uninstalling the Extension clears these. The author has no access to them.

Google’s handling of your Gemini API requests

When you use Gemini API mode, your requests are subject to Google’s terms and privacy policy for the Generative Language API:

• Generative Language API — https://ai.google.dev/gemini-api/terms
• Google Privacy Policy — https://policies.google.com/privacy

The Extension author has no visibility into, and no control over, how Google handles those requests. Your API key is your responsibility — keep it private and revoke it from Google AI Studio if compromised.

Permissions and why they’re needed

Permission	Why
tabs	Read the titles and URLs of open tabs in the active window so the AI can suggest groupings.
tabGroups	Create, name, and color Chrome tab groups after you click “Apply groups”.
storage	Save your API key, model choice, and preferences locally in this browser.
Host: https://generativelanguage.googleapis.com/*	Send your tab titles and URLs to the Gemini API only when you use Gemini API mode.

The Extension does not request <all_urls>, scripting, cookies, history, or any host permission other than the Gemini API endpoint.

Children

The Extension is not directed at children under 13 and does not knowingly collect personal information from them.

Changes to this policy

Material changes will be published in this file in the public GitHub repository. The “Last updated” date at the top reflects the most recent revision.

Contact

• GitHub Issues: https://github.com/0xmokuren/TabClusterAI/issues
• Source code: https://github.com/0xmokuren/TabClusterAI

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