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CTRL

Windows

Reach a Windows PC from the browser, and let an approved helper use only the apps you allow.

Open CTRLAbout CTRL

  1. Install CTRL on the PC

    Download CTRL-win-x64.zip, unzip it, and run CTRL-Setup.exe. Sign in with your DAISI account when it asks. Leave the CTRL icon in the tray so the PC stays reachable.

  2. Log in on the site

    Open CTRL in the browser and click Login. You land on your computers.

  3. Open a screen

    Pick a computer that is online and click Displays. Click a screen to take control. Pop out opens that screen in its own window.

  4. Work on it

    The top bar has screen numbers, Native or Adapt size, sound, fullscreen, Hosts, Apps, and Close. Files slides down the shared folders. Copy on this device and paste on the PC, or the other way around.

  5. Let a helper use an app

    On the PC, open CTRL and go to Agents. Create an agent and copy the token once — it starts with ctrl_. Approve each program. If an app is not approved, the helper cannot control it. The local plug stays at http://127.0.0.1:17322 and is not opened to the public internet.

  6. Hold for the extra action

    A short press does the usual thing. Hold a computer in Hosts to open it in a new tab. Hold a shortcut key to edit the phrase. Hold a number key to type the shift character.

On screen

CTRL public site with Download and Login
The public site. Login is in the top right.
CTRL hosts, online and offline
Hosts. Orange means the computer is online.
CTRL screen tiles
Each tile is one screen.
CTRL viewer top bar
Screen numbers, Native or Adapt, sound, Hosts, Apps, and Close.
CTRL apps slider
Apps. Desktop is the whole screen. The other tiles are programs.
CTRL on-screen keyboard
On a phone, tap Keyboard. Hold the button to slide it.
CTRL Agents page
On the PC: Agents, then create an agent and approve apps.

Commands

Point a helper at this PC

{
  "mcpServers": {
    "ctrl": {
      "url": "http://127.0.0.1:17322/mcp",
      "headers": { "Authorization": "Bearer ctrl_YOUR_TOKEN" }
    }
  }
}

Tools the helper can call

ctrl_ping                 is the host awake?
ctrl_list_hosts           this PC and your other CTRL computers
ctrl_list_apps            approved apps that are open
ctrl_screenshot_window    a picture of that app
ctrl_preview_click        paint a crosshair — does not click
ctrl_mouse_click          click that point after the preview looks right
ctrl_type_text            type in that app
ctrl_key_press            press a key
ctrl_file_list            shared folders
ctrl_file_read            read a shared file
ctrl_file_write           write a shared file
OneYeti

Reviewed October 2026.