ui_focus_control · K-Personal MCP: Risk & Policy

WHAT IT DOES

What ui_focus_control does on K-Personal MCP

AI agents invoke ui_focus_control 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 ui_focus_control needs a policy

This tool sets focus to a UI control element, which is a UI automation action that triggers an external operation (changing the focused control in a running application). It doesn't merely read data, nor does it write/delete data — it executes a UI interaction.

From the tool's definition 컨트롤 포커스만 줍니다 (창 활성화·마우스 이동 없음) — triggers a UI focus action on a control element

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ui_focus_control Rate-limited

ui_focus_control 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": {
    "ui_focus_control": {
      "limits": [
        {
          "counter": "ui_focus_control_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 ui_focus_control

What does the ui_focus_control tool do? +

컨트롤 포커스만 줍니다 (창 활성화·마우스 이동 없음). 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 ui_focus_control? +

Register the K-Personal MCP server in PolicyLayer and add a rule for ui_focus_control: 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 ui_focus_control? +

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

Can I rate-limit ui_focus_control? +

Yes. Add a rate_limit block to the ui_focus_control 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 ui_focus_control completely? +

Set action: deny in the PolicyLayer policy for ui_focus_control. 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 ui_focus_control? +

ui_focus_control 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.