ui_set_text · K-Personal MCP: Risk & Policy

WHAT IT DOES

What ui_set_text does on K-Personal MCP

AI agents use ui_set_text to create or update resources in K-Personal MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your K-Personal MCP environment.

WHY IT NEEDS A POLICY

Why ui_set_text needs a policy

This tool modifies application state by directly setting text in UI input controls. While reversible (text can be changed again), it constitutes a write operation with medium severity because unintended modifications could alter important data or trigger unintended application behavior. It is not Execute-level because it does not run code or commands—it only sets text values.

From the tool's definition Tool name 'ui_set_text' and description indicate direct text input to UI controls (Edit/Document elements). The description states it 'set[s] text' directly in input controls, which is a write operation that modifies UI state and potentially application data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ui_set_text Rate-limited

ui_set_text stays usable, but capped — an agent stuck in a loop can't make hundreds of changes 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_set_text": {
      "limits": [
        {
          "counter": "ui_set_text_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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_set_text

What does the ui_set_text tool do? +

입력 컨트롤(Edit/Document)에 텍스트를 직접 set 합니다. It is categorised as a Write tool in the K-Personal MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ui_set_text? +

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

ui_set_text is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit ui_set_text? +

Yes. Add a rate_limit block to the ui_set_text 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_set_text completely? +

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

ui_set_text 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.