approve_or_reject · ServiceNow MCP Server MCP: Risk & Policy

WHAT IT DOES

What approve_or_reject does on ServiceNow MCP Server

AI agents use approve_or_reject 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.

WHY IT NEEDS A POLICY

Why approve_or_reject needs a policy

An AI agent can call approve_or_reject faster than any human can review — one bad instruction and it creates or modifies resources in ServiceNow MCP Server by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

approve_or_reject Rate-limited

approve_or_reject 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": {
    "approve_or_reject": {
      "limits": [
        {
          "counter": "approve_or_reject_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 Server, so you can run agents against it safely.

FAQ

Questions about approve_or_reject

What does the approve_or_reject tool do? +

Approve or reject a pending approval with optional comments. 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 approve_or_reject? +

Register the ServiceNow MCP Server MCP server in PolicyLayer and add a rule for approve_or_reject: 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 approve_or_reject? +

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

Can I rate-limit approve_or_reject? +

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

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

approve_or_reject is provided by the ServiceNow MCP Server MCP server (windoze95/servicewow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.