NestDaddy

Usable Browser Agent

io.github.Savvy-Tech-Sphere/usable-browser-agent · v0.7.1

MCP server and Firefox add-on that let an AI agent drive your real, logged-in browser. Free tier.

Connect Runs on your machine

Terminal
claude mcp add usable-browser-agent -e UBA_PORT=<UBA_PORT> -- npx -y [email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "usable-browser-agent": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "UBA_PORT": "<UBA_PORT>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "usable-browser-agent": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "UBA_PORT": "<UBA_PORT>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "usable-browser-agent": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "UBA_PORT": "<UBA_PORT>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
UBA_PORT
Optional
Local WebSocket port the browser extension connects to (default 8876).

Details

Package[email protected] (NPM, stdio)
First published26 Sep 2026
Last updated26 Sep 2026
Registry nameio.github.Savvy-Tech-Sphere/usable-browser-agent

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