create_approval_rule

Create an approval rule that automatically generates approval requests when a record matches given conditions (requires WRITE_ENABLED=true).

SERVERServiceNow MCP Server SOURCE@aartiq/servicenow-mcp

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/servicenow-mcp-server/create-approval-rule.md

WHAT IT DOES

What create_approval_rule does on ServiceNow MCP Server

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

RISK

Why create_approval_rule is rated Medium

This tool creates approval rules that trigger automatic approval workflows. While it modifies system configuration reversibly (approval rules can be updated or deleted), it does not irreversibly destroy data, execute arbitrary code, or move financial resources.

From the tool's definition Tool description states it "Create[s] an approval rule" and requires "WRITE_ENABLED=true", indicating it creates and persists new configuration objects.

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 ServiceNow MCP Server, 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 ServiceNow MCP Server, 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 ServiceNow MCP Server 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 ServiceNow MCP Server 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 ServiceNow MCP Server. 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 ServiceNow MCP Server MCP server (@aartiq/servicenow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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