# desktop_focus

Focus a desktop window

Agent View of the PolicyLayer registry record for `desktop_focus`. HTML page: https://policylayer.com/tools/alexgladkov-claude-in-mobile/desktop-focus

## Facts

- Tool: `desktop_focus`
- Server: Claude Mobile (`alexgladkov/claude-in-mobile`) — https://policylayer.com/tools/alexgladkov-claude-in-mobile.md
- Homepage: https://github.com/AlexGladkov/claude-in-mobile
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "desktop_focus",
    "arguments": {}
  }
}
```

## Why desktop_focus is rated High

Focusing a desktop window is an action that triggers an external operation affecting the windowing system state. It doesn't merely read data, but actively changes which window is in focus, which constitutes an Execute-level action. Misuse could cause unexpected UI interactions or disrupt user workflow, but blast radius is moderate.

From the tool's own definition: "'Focus a desktop window' — triggers an external UI/window management operation on the host desktop environment"

## Use case

AI agents invoke desktop_focus to trigger actions in Claude Mobile. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Claude Mobile:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "desktop_focus": {
      "limits": [
        {
          "counter": "desktop_focus_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Claude Mobile (197)

- `browser_clear_session` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/browser-clear-session.md
- `debug_remove_break` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/debug-remove-break.md
- `network_proxy` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/network-proxy.md
- `permission_reset` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/permission-reset.md
- `permission_revoke` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/permission-revoke.md
- `recorder` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/recorder.md
- `recorder_delete` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/recorder-delete.md
- `recorder_remove_step` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/recorder-remove-step.md
- `repl_kill` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/repl-kill.md
- `rustore_discard` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/rustore-discard.md
- `sensor_battery` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/sensor-battery.md
- `store_discard` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/store-discard.md
- `sync_destroy` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/sync-destroy.md
- `system_clear_logs` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/system-clear-logs.md
- `visual` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/visual.md
- `visual_delete` — Destructive — https://policylayer.com/tools/alexgladkov-claude-in-mobile/visual-delete.md
- `app` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/app.md
- `app_install` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/app-install.md
- `app_launch` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/app-launch.md
- `app_restart` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/app-restart.md
- `app_stop` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/app-stop.md
- `appstore_build` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/appstore-build.md
- `appstore_submit` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/appstore-submit.md
- `appstore_upload` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/appstore-upload.md
- `autopilot` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/autopilot.md
- `autopilot_explore` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/autopilot-explore.md
- `autopilot_heal` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/autopilot-heal.md
- `browser` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/browser.md
- `browser_click` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/browser-click.md
- `browser_close` — Execute — https://policylayer.com/tools/alexgladkov-claude-in-mobile/browser-close.md
- …and 167 more: https://policylayer.com/tools/alexgladkov-claude-in-mobile.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=alexgladkov-claude-in-mobile · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/alexgladkov-claude-in-mobile