Browser Extension

What the browser extension is

The Zeuslock browser extension protects the AI tools your team uses inside the browser — ChatGPT, Claude, Gemini, Microsoft Copilot, Perplexity and similar services. It is a lightweight client: the rules and decisions come from Zeuslock, and the extension enforces them right in the page.

What it does

• Watches prompts and file uploads as they are about to be sent to an AI tool, and checks them against your organization's rules before anything leaves the browser.
• Acts on what it finds, based on your rule for that data type:
  • Allow — nothing sensitive is found, and the prompt goes through.
  • Alert — a warning is shown with an anonymized preview, so the person can send a safe version or cancel.
  • Block — the send is stopped entirely.
• Fails safe — if it cannot reach Zeuslock, it errs on the side of caution rather than letting data through silently.

The extension does not decide policy on its own. What counts as sensitive, and whether to alert or block, is configured on the Rules page and applies to everyone in your organization.

Where you see it on the dashboard

• The Active extensions card on the Dashboard shows how many browser extensions are currently connected.
• The Extension page in the left sidebar is where you roll it out and check its status.

A new organization starts at 0 active extensions — that simply means no browser has connected yet.

How it fits with the desktop agent

The extension covers AI tools used in the browser. To also protect desktop applications and command-line tools, pair it with the Desktop agent. Together they cover everywhere employees use AI.