update_uib_page · ServiceNow- MCP: Risk & Policy

WHAT IT DOES

What update_uib_page does on ServiceNow-MCP

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

WHY IT NEEDS A POLICY

Why update_uib_page needs a policy

This tool modifies existing ServiceNow UI Builder pages, which are reversible changes that can affect application interface, user experience, and potentially organizational workflows. The high severity reflects that UI Builder pages often control critical user-facing interfaces and could impact many users if misconfigured by an AI agent. The '[Write]' tag in the description confirms the classification.

From the tool's definition Tool name 'update_uib_page' and explicit description 'Update an existing UI Builder page' with '[Write]' classification tag indicates modification of UI configuration data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_uib_page Rate-limited

update_uib_page 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": {
    "update_uib_page": {
      "limits": [
        {
          "counter": "update_uib_page_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 ServiceNow-MCP, so you can run agents against it safely.

FAQ

Questions about update_uib_page

What does the update_uib_page tool do? +

Update an existing UI Builder page. [Write]. It is categorised as a Write tool in the ServiceNow-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 update_uib_page? +

Register the ServiceNow- MCP server in PolicyLayer and add a rule for update_uib_page: 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 ServiceNow-MCP. Nothing to install.

What risk level is update_uib_page? +

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

Can I rate-limit update_uib_page? +

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

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

update_uib_page is provided by the ServiceNow- MCP server (tedorigawa001/servicenow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.