update_hr_case

Update fields on an existing HR case (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/update-hr-case.md

WHAT IT DOES

What update_hr_case does on ServiceNow MCP Server

AI agents use update_hr_case 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 update_hr_case is rated Medium

This tool modifies existing HR case records reversibly. While the blast radius is high due to HR data sensitivity (employee records, personal information, case status), it is not destructive (data can be reverted) and not financial. Categorized as Write with high severity due to the sensitive nature of HR data and potential for misuse to alter case statuses, employee records, or other critical HR information.

From the tool's definition Tool name 'update_hr_case' and description 'Update fields on an existing HR case' explicitly indicate modification of data. The description requires 'WRITE_ENABLED=true', confirming write capability.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

update_hr_case Rate-limited

update_hr_case 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": {
    "update_hr_case": {
      "limits": [
        {
          "counter": "update_hr_case_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 update_hr_case call is checked against it from then on.

FAQ

Questions about update_hr_case

What does the update_hr_case tool do? +

Update fields on an existing HR case (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 update_hr_case? +

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

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

Can I rate-limit update_hr_case? +

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

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

update_hr_case 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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