create_approval_rule

Create an approval rule that automatically generates approval requests when a record matches given conditions (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-approval-rule.md

WHAT IT DOES

What create_approval_rule does on NowAIKit — ServiceNow AI Toolkit

AI agents use create_approval_rule 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_approval_rule is rated Medium

This tool creates new approval rules in ServiceNow, which is a reversible write operation that modifies system configuration. The 'high' severity reflects that misconfigured approval rules could disrupt business workflows, bypass intended approval processes, or create excessive approval requests. However, this is not destructive (rules can be modified/deleted) and not financial (no direct money movement).

From the tool's definition Tool description states 'Create an approval rule' which is a creation operation, and requires 'WRITE_ENABLED=true' indicating data modification capability. The tool creates automation rules that generate approval requests when conditions are met.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_approval_rule 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_approval_rule, this is the rule to start with:

create_approval_rule Rate-limited

create_approval_rule 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_approval_rule": {
      "limits": [
        {
          "counter": "create_approval_rule_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_approval_rule call is checked against it from then on.

FAQ

Questions about create_approval_rule

What does the create_approval_rule tool do? +

Create an approval rule that automatically generates approval requests when a record matches given conditions (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_approval_rule? +

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

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

Can I rate-limit create_approval_rule? +

Yes. Add a rate_limit block to the create_approval_rule 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_approval_rule completely? +

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

create_approval_rule 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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