Privacy Policy

Last updated: April 6, 2026

Browser MCP is an open source Chrome extension + MCP server by Agent360. We take your privacy seriously.

Data Collection

Browser MCP does not collect, store, or transmit any personal data. Specifically:

• No browsing history is collected or sent anywhere
• No cookies or login credentials are read by our servers
• No analytics, tracking, or telemetry is included
• No data leaves your machine — all processing is local

How Browser MCP Works

Browser MCP operates entirely on your local machine:

• The Chrome extension communicates with a local MCP server via WebSocket (localhost only)
• The MCP server communicates with Claude Code (or other MCP clients) via stdio
• No external servers are contacted. No data is sent to Agent360 or any third party

The localhost WebSocket bridge is not password-protected — it trusts connections from your own machine. That means the extension is only as private as your computer: any software already running on it could, in principle, connect to the same local port. Browser MCP never exposes this bridge beyond localhost, and nothing is transmitted off your machine. If you share your computer with untrusted software, disable or remove the extension when you are not using it.

Permissions

Browser MCP requests the following Chrome permissions. Each is required for browser automation functionality:

• tabs, tabGroups, activeTab — See and switch between tabs, and group each session's tabs by color
• cookies — Read/write cookies for the browser_get_cookies / browser_set_cookies tools
• scripting — Execute JavaScript in page context for content reading and interaction
• debugger — Chrome DevTools Protocol for reliable mouse/keyboard events on CSP-strict sites
• webNavigation — Detect when a page has finished loading before acting on it
• storage, alarms, offscreen — Local extension state, the keep-alive timer, and the offscreen document that hosts the WebSocket bridge
• notifications — Alert you when a human-in-the-loop action is needed
• <all_urls> (host permission) — Browser automation requires access to whatever website you navigate to

Open Source

Browser MCP is fully open source under the MIT License. You can inspect all code at github.com/Agent360dk/browser-mcp.

Contact

Questions? Email [email protected] or open an issue on GitHub.

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