Browser Control MCP Server

An MCP server paired with a Firefox browser extension that provides AI assistants with access to tab management, browsing history, and webpage text

Local serverstdio

What is the Browser Control MCP MCP server?

If you already use Browser Control MCP, the browser control mcp mcp server is the piece that lets your assistant work with it directly. An MCP server paired with a Firefox browser extension that provides AI assistants with access to tab management, browsing history, and webpage text content.

What the server does

  • Open or close tabs
  • Get the list of opened tabs
  • Create tab groups with name and color
  • Reorder opened tabs
  • Read and search the browser's history
  • Read a webpage's text content and links (requires user consent)

Installation

npm on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.

Credentials and setup notes

Configuration is passed through the environment: EXTENSION_SECRET, EXTENSION_PORT. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Where it fits

Plenty of browser automation servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. It is maintained by eyalzh; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

How to install the Browser Control MCP MCP server

{
  "mcpServers": {
    "browser-control": {
      "command": "npx",
      "args": ["-y", "npm"],
      "env": {
        "EXTENSION_SECRET": "your-value",
        "EXTENSION_PORT": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

VariableDescriptionRequired
EXTENSION_SECRETCredential the server authenticates with.Yes
EXTENSION_PORTConfiguration value read at startup.Optional

Frequently asked questions

It connects Browser Control MCP to MCP-compatible AI assistants such as Claude and Cursor. Instead of copying data back and forth by hand, the assistant works with Browser Control MCP directly.