incidents_add_comment · ServiceNow MCP Server MCP

WHAT IT DOES

What incidents_add_comment does on ServiceNow MCP Server

AI agents use incidents_add_comment 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 incidents_add_comment needs a policy

This tool creates new comment/note data within ServiceNow incidents, modifying the incident record reversibly. Comments can be edited or deleted later, making this a Write operation rather than Destructive.

From the tool's definition Tool name 'incidents_add_comment' and description 'Add a work note or comment to an incident' indicate creation of new comment data within an existing incident record.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

incidents_add_comment Rate-limited

incidents_add_comment 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": {
    "incidents_add_comment": {
      "limits": [
        {
          "counter": "incidents_add_comment_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 incidents_add_comment

What does the incidents_add_comment tool do? +

Add a work note or comment to an incident. 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 incidents_add_comment? +

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

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

Can I rate-limit incidents_add_comment? +

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

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

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