configure_theme · its-just-ui MCP Server MCP: Risk & Policy

WHAT IT DOES

What configure_theme does on its-just-ui MCP Server

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

WHY IT NEEDS A POLICY

Why configure_theme needs a policy

This tool creates or updates theme configuration data (colors, typography modes) without permanently deleting or destroying data. Changes to theme settings can be reverted or overwritten. It does not execute arbitrary code, delete data irreversibly, or handle financial operations.

From the tool's definition Tool description states "Configure theme settings including colors, mode, and typography" — the verb "configure" and the explicit mention of modifying multiple theme parameters (colors, mode, typography) indicate reversible data modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

configure_theme Rate-limited

configure_theme 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": {
    "configure_theme": {
      "limits": [
        {
          "counter": "configure_theme_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 its-just-ui MCP Server, so you can run agents against it safely.

FAQ

Questions about configure_theme

What does the configure_theme tool do? +

Configure theme settings including colors, mode, and typography. It is categorised as a Write tool in the its-just-ui MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on configure_theme? +

Register the its-just-ui MCP Server MCP server in PolicyLayer and add a rule for configure_theme: 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 its-just-ui MCP Server. Nothing to install.

What risk level is configure_theme? +

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

Can I rate-limit configure_theme? +

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

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

configure_theme is provided by the its-just-ui MCP Server MCP server (its-just-ui/its-just-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.