update_scoped_app · ServiceNow- MCP: Risk & Policy

WHAT IT DOES

What update_scoped_app does on ServiceNow-MCP

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

WHY IT NEEDS A POLICY

Why update_scoped_app needs a policy

This tool creates or modifies data reversibly within ServiceNow's application framework. While 'update' is inherently Write-category, the severity is elevated to 'high' because: (1) scoped apps can contain custom code and business logic affecting multiple users/processes; (2) unauthorized app modifications could enable privilege escalation, inject malicious logic, or disrupt critical workflows; (3) ServiceNow scoped…

From the tool's definition Tool name 'update_scoped_app' performs an update operation. Description explicitly states 'Update an existing scoped application' and requires 'WRITE_ENABLED=true', confirming it modifies data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_scoped_app Rate-limited

update_scoped_app 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_scoped_app": {
      "limits": [
        {
          "counter": "update_scoped_app_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches ServiceNow-MCP, so you can run agents against it safely.

FAQ

Questions about update_scoped_app

What does the update_scoped_app tool do? +

Update an existing scoped application (requires WRITE_ENABLED=true). It is categorised as a Write tool in the ServiceNow-MCP 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_scoped_app? +

Register the ServiceNow- MCP server in PolicyLayer and add a rule for update_scoped_app: 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. Nothing to install.

What risk level is update_scoped_app? +

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

Can I rate-limit update_scoped_app? +

Yes. Add a rate_limit block to the update_scoped_app 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_scoped_app completely? +

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

update_scoped_app is provided by the ServiceNow- MCP server (tedorigawa001/servicenow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.