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openclaw/docs/tools/screen.md
2026-07-18 17:00:14 -07:00

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---
summary: "Let an agent arrange the connected Control UI"
title: "Screen"
sidebarTitle: "Screen"
read_when:
- You want an agent to split, focus, close, or navigate Control UI panes
- You want an agent to show or hide the sidebar, terminal, or browser panels
- You need the ui.command capability and fan-out contract
---
The `screen` tool lets an agent arrange the browser-based Control UI. It is a
typed layout and navigation surface, not screenshot capture or browser
automation.
The tool is exposed only when the originating client advertises the
`ui-commands` capability. At least one capable Control UI must still be
connected when the tool runs; otherwise the Gateway returns `UNAVAILABLE`.
## Actions
| Action | Effect | Optional inputs |
| --------------------------------- | ------------------------------------------ | ---------------------------------------------- |
| `split_right` | Split the target session pane to the right | `sessionKey` (defaults to the current session) |
| `split_down` | Split the target session pane downward | `sessionKey` (defaults to the current session) |
| `close_pane` | Close the target session pane | `sessionKey` (defaults to the current session) |
| `focus` | Focus the target session pane | `sessionKey` (defaults to the current session) |
| `navigate` | Open the target session | `sessionKey` (defaults to the current session) |
| `sidebar_show` / `sidebar_hide` | Show or hide the main sidebar | - |
| `terminal_show` / `terminal_hide` | Show or hide the operator terminal panel | `dock` (`bottom` or `right`) when showing |
| `browser_show` / `browser_hide` | Show or hide the browser panel | `dock` (`bottom` or `right`) when showing |
A successful command returns `{ "ok": true }` after the Gateway broadcasts
the typed `ui.command` event.
## Routing and security
Protocol v1 intentionally sends the command to every connected Control UI that
advertises `ui-commands`; it does not target one browser tab. This matters when
the same operator has several dashboards open.
The Gateway RPC requires `operator.write`. The tool can change presentation
state only: it cannot read pixels, take screenshots, click arbitrary page
content, or bypass the permissions of the selected session and operator
panels.
## Related
- [Control UI](/web/control-ui)
- [Gateway protocol](/gateway/protocol#method-families)
- [Browser tool](/tools/browser)