snow_create_ux_page_macroponent · Serac MCP: Risk & Policy

WHAT IT DOES

What snow_create_ux_page_macroponent does on Serac

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

WHY IT NEEDS A POLICY

Why snow_create_ux_page_macroponent needs a policy

This tool creates/modifies a data record (sys_ux_macroponent) in ServiceNow, which is a reversible Write operation. The severity is high because creating or modifying UI page components in an enterprise system could affect user experience at scale, expose sensitive UI logic, or enable injection of malicious content into pages served to end users.

From the tool's definition 'Create Page Macroponent Record' — creates a new sys_ux_macroponent record in ServiceNow, which defines page content displayed to users.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

snow_create_ux_page_macroponent Rate-limited

snow_create_ux_page_macroponent 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": {
    "snow_create_ux_page_macroponent": {
      "limits": [
        {
          "counter": "snow_create_ux_page_macroponent_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 Serac, so you can run agents against it safely.

FAQ

Questions about snow_create_ux_page_macroponent

What does the snow_create_ux_page_macroponent tool do? +

STEP 3: Create Page Macroponent Record (sys_ux_macroponent) - Defines the actual page content that will be displayed. It is categorised as a Write tool in the Serac MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on snow_create_ux_page_macroponent? +

Register the Serac MCP server in PolicyLayer and add a rule for snow_create_ux_page_macroponent: 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 Serac. Nothing to install.

What risk level is snow_create_ux_page_macroponent? +

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

Can I rate-limit snow_create_ux_page_macroponent? +

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

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

snow_create_ux_page_macroponent is provided by the Serac MCP server (serac-labs/serac). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.