focus_window

A execute tool on the Desktop Commander MCP server.

SERVERDesktop Commander MCP Server SOURCE19miha99/system-monitor-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/19miha99-system-monitor-mcp/focus-window.md

WHAT IT DOES

What focus_window does on Desktop Commander MCP Server

AI agents invoke focus_window to trigger actions in Desktop Commander MCP Server. 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.

RISK

Why focus_window is rated High

Based on the tool name and server context ('full control over your desktop', 'manage windows'), focus_window likely brings a specific window to the foreground and gives it input focus. This is an external desktop operation (Execute category) as it triggers a UI/OS-level action. Severity is medium since misuse could redirect user attention or enable clickjacking-style attacks, but it doesn't destroy data.

From the tool's definition Tool name 'focus_window'; description is empty and uninformative.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs focus_window safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Desktop Commander MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For focus_window, this is the rule to start with:

focus_window Rate-limited

focus_window stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "focus_window": {
      "limits": [
        {
          "counter": "focus_window_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Desktop Commander MCP Server, apply this rule, and every focus_window call is checked against it from then on.

FAQ

Questions about focus_window

What does the focus_window tool do? +

focus_window is a execute tool on the Desktop Commander MCP Server MCP server. It is categorised as a Execute tool in the Desktop Commander MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on focus_window? +

Register the Desktop Commander MCP Server MCP server in PolicyLayer and add a rule for focus_window: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Desktop Commander MCP Server. Nothing to install.

What risk level is focus_window? +

focus_window is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit focus_window? +

Yes. Add a rate_limit block to the focus_window rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block focus_window completely? +

Set action: deny in the PolicyLayer policy for focus_window. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides focus_window? +

focus_window is provided by the Desktop Commander MCP Server MCP server (19miha99/system-monitor-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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