create_uib_component

Create a custom UI Builder component (macroponent). [Scripting]

SERVERNowAIKit — ServiceNow AI Toolkit SOURCEnowaikit

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/nowaikit-servicenow-ai-toolkit/create-uib-component.md

WHAT IT DOES

What create_uib_component does on NowAIKit — ServiceNow AI Toolkit

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

RISK

Why create_uib_component is rated Medium

The tool creates a new UI Builder component, which is a Write operation (creating/modifying data). The [Scripting] tag hints at code involvement, but the primary action described is creation of a UI component rather than arbitrary code execution. Misuse could introduce malicious front-end components, hence medium severity.

From the tool's definition 'Create a custom UI Builder component (macroponent)' — creates a new resource in ServiceNow

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_uib_component safely

PolicyLayer is an MCP gateway: it sits between your AI agents and NowAIKit — ServiceNow AI Toolkit, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_uib_component, this is the rule to start with:

create_uib_component Rate-limited

create_uib_component 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": {
    "create_uib_component": {
      "limits": [
        {
          "counter": "create_uib_component_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect NowAIKit — ServiceNow AI Toolkit, apply this rule, and every create_uib_component call is checked against it from then on.

FAQ

Questions about create_uib_component

What does the create_uib_component tool do? +

Create a custom UI Builder component (macroponent). [Scripting]. It is categorised as a Write tool in the NowAIKit — ServiceNow AI Toolkit MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_uib_component? +

Register the NowAIKit — ServiceNow AI Toolkit MCP server in PolicyLayer and add a rule for create_uib_component: 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 NowAIKit — ServiceNow AI Toolkit. Nothing to install.

What risk level is create_uib_component? +

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

Can I rate-limit create_uib_component? +

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

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

create_uib_component is provided by the NowAIKit — ServiceNow AI Toolkit MCP server (nowaikit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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