cc_focus_window · K-Personal MCP: Risk & Policy

WHAT IT DOES

What cc_focus_window does on K-Personal MCP

AI agents invoke cc_focus_window to trigger actions in K-Personal MCP. 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.

WHY IT NEEDS A POLICY

Why cc_focus_window needs a policy

This tool triggers an external UI operation (bringing a window to the foreground/focus) on the Windows desktop. It doesn't merely read data, nor does it write or destroy data, but it executes a UI automation action that changes system state (active window focus), which could be misused to redirect user attention or enable follow-on input injection attacks.

From the tool's definition 창을 활성화(포커스)합니다 — activates/focuses a window matching a title string

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

cc_focus_window Rate-limited

cc_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": {
    "cc_focus_window": {
      "limits": [
        {
          "counter": "cc_focus_window_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches K-Personal MCP, so you can run agents against it safely.

FAQ

Questions about cc_focus_window

What does the cc_focus_window tool do? +

제목에 특정 문자열이 포함된 창을 활성화(포커스)합니다. (Windows 전용). It is categorised as a Execute tool in the K-Personal MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on cc_focus_window? +

Register the K-Personal MCP server in PolicyLayer and add a rule for cc_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 K-Personal MCP. Nothing to install.

What risk level is cc_focus_window? +

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

Can I rate-limit cc_focus_window? +

Yes. Add a rate_limit block to the cc_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 cc_focus_window completely? +

Set action: deny in the PolicyLayer policy for cc_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 cc_focus_window? +

cc_focus_window is provided by the K-Personal MCP server (lee30934-byte/k-personal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.