Open Browser Control

Give AI agents control of your browser — Chrome or Firefox. Works with Kiro, Claude Code, Claude Desktop, Cursor, and any MCP client.

The AI uses your real browser — your cookies, sessions, and logins. When it hits something it can’t handle (sign-in, CAPTCHA, MFA), it asks you to step in, then continues where it left off.

Install either the Chrome or the Firefox extension — the MCP server speaks the same protocol to both.

Quick Start

Step 1: Add MCP config

Add to your MCP client’s config:

Kiro — add to .kiro/settings/mcp.json (workspace) or ~/.kiro/settings/mcp.json (global):

{
  "mcpServers": {
    "browser": {
      "command": "npx",
      "args": ["-y", "open-browser-control"]
    }
  }
}

Step 2: Install the browser extension

Pick whichever browser you’d like the AI to drive.

Chrome — install from the Chrome Web Store:

Open Browser Control on the Chrome Web Store

Done. The extension auto-connects when your agent starts. No servers to run, no buttons to click.

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How It Works

AI Agent          MCP Server              Browser Extension
(Kiro,       ◄──► (npx open-browser-  ◄──► (Chrome: CDP, or
 Claude, ..)      control)                  Firefox: scripting API)
              stdio    ws://localhost:9334    auto-connect

1. Your agent starts the MCP server automatically (from the config above)
2. MCP server starts a WebSocket bridge on localhost:9334