create_portal_widget

Create a new Service Portal widget with template, CSS, and scripts (requires WRITE_ENABLED=true)

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-portal-widget.md

WHAT IT DOES

What create_portal_widget does on NowAIKit — ServiceNow AI Toolkit

AI agents use create_portal_widget 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_portal_widget is rated Medium

This tool creates new portal widgets, which is a reversible data modification operation. While it affects ServiceNow's UI layer and could cause visual/functional disruption if misused, it is not irreversible (widgets can be deleted or modified) and does not execute arbitrary code, delete data, or move money.

From the tool's definition Tool explicitly performs 'Create a new Service Portal widget' with 'template, CSS, and scripts' — core creation operation. Description notes conditional requirement 'WRITE_ENABLED=true', confirming write capability.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_portal_widget 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_portal_widget, this is the rule to start with:

create_portal_widget Rate-limited

create_portal_widget 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_portal_widget": {
      "limits": [
        {
          "counter": "create_portal_widget_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_portal_widget call is checked against it from then on.

FAQ

Questions about create_portal_widget

What does the create_portal_widget tool do? +

Create a new Service Portal widget with template, CSS, and scripts (requires WRITE_ENABLED=true). 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_portal_widget? +

Register the NowAIKit — ServiceNow AI Toolkit MCP server in PolicyLayer and add a rule for create_portal_widget: 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_portal_widget? +

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

Can I rate-limit create_portal_widget? +

Yes. Add a rate_limit block to the create_portal_widget 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_portal_widget completely? +

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

create_portal_widget 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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