Agent Browser MCP Server

What the code does

We read the source, 5 d ago · rules 995398eba69f

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

    return subprocess.run(command, capture_output=True, text=True, check=False)  # noqa: S603

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

  return spawnSync(cmd, args, { encoding: 'utf8', ...options })

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add agent-browser -- npx -y aether-browser

{
  "mcpServers": {
    "agent-browser": {
      "command": "npx",
      "args": [
        "-y",
        "aether-browser"
      ]
    }
  }
}

[mcp_servers.agent-browser]
command = "npx"
args = ["-y", "aether-browser"]

{
  "mcpServers": {
    "agent-browser": {
      "command": "npx",
      "args": [
        "-y",
        "aether-browser"
      ]
    }
  }
}

{
  "servers": {
    "agent-browser": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "aether-browser"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: AGENT_BROWSER_URL (Base URL of your Agent Browser server. Defaults to http://127.0.0.1:8092), AGENT_BROWSER_CONTROLLER_TOKEN (Controller token, if the server runs authenticated), AGENT_BROWSER_OBSERVER_TOKEN (Observer token for read-only health and snapshot calls).