Firefox MCP

An MCP server paired with a Firefox extension that gives AI assistants real access to your browser: tab management, browsing history, and webpage text content.

What the tools cover

Open and close tabs, list what's open, create named and coloured tab groups, and reorder tabs. Read and search browser history. Read a page's text and links, find and highlight text in a tab, execute JS, fill forms, click elements, and monitor a page for changes. Bookmarks can be searched and opened too.

In practice that means asking your assistant things like "open YouTube Music and play some HYBS", "what calendar events do I have on my Microsoft 365 account", "screenshot the active tab", or "resume playback on Prime Video".

Setup

The Firefox side installs from addons.mozilla.org; the server side is a Node process you register with your MCP client — for Claude Code:

claude mcp add --transport stdio browser-control --scope user -- node "PATH_TO/mcp-server/dist/server.js"

Still experimental — treat it like any other MCP server and authorise and monitor tool calls carefully.