Bun Uia MCP Server

What the code does

We read the source, 4 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.

этот файл ставится пользователю, но в репозитории его нет

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.

const runKey = 'Software\\Microsoft\\Windows\\CurrentVersion\\Run';

const build = Bun.spawnSync(

    const drop = (1 - Math.min(1, shelfVisibility)) * (layout.shelfHeight + layout.shelfMargin) * this.#scale * 0.5;

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 bun-uia -- npx -y bun-uia

{
  "mcpServers": {
    "bun-uia": {
      "command": "npx",
      "args": [
        "-y",
        "bun-uia"
      ]
    }
  }
}

[mcp_servers.bun-uia]
command = "npx"
args = ["-y", "bun-uia"]

{
  "mcpServers": {
    "bun-uia": {
      "command": "npx",
      "args": [
        "-y",
        "bun-uia"
      ]
    }
  }
}

{
  "servers": {
    "bun-uia": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "bun-uia"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: BUN_UIA_PROFILE (Capability profile: 'readonly' (inspect/read only), 'safe' (read + input + window — default), or 'full' (also os + fs tools)), BUN_UIA_OS (Set to '1' to allow OS-level tools (launch_app, run_program, open_path) AND filesystem tools (read_file, write_file, list_dir) regardless of profile), BUN_UIA_ALLOW (Comma-separated tool names or categories to additionally allow on top of the profile), BUN_UIA_DENY (Comma-separated tool names or categories to deny, overriding the profile and BUN_UIA_ALLOW), BUN_UIA_CURSOR (Set to 'never' to forbid the real-cursor fallback entirely (strictly cursor-free). By default clicks/drags are cursor-free but fall back to the real hardware cursor when no cursor-free path exists), BUN_UIA_FS_ROOT (Sandbox root directory that read_file/write_file/list_dir are confined to when fs tools are enabled).