list_acls

List Access Control rules (ACLs) — who can read/write/create/delete records (requires SCRIPTING_ENABLED=true)

SERVERServiceNow-MCP SOURCEtedorigawa001/servicenow-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/tedorigawa001-servicenow-mcp/list-acls.md

WHAT IT DOES

What list_acls does on ServiceNow-MCP

AI agents call list_acls to retrieve information from ServiceNow-MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_acls is rated Low

This tool retrieves and queries ACL configuration data (who can read/write/create/delete records), which is a read operation. However, severity is 'high' rather than 'low' because ACL data is security-sensitive information; an AI agent that leaks or misuses this intelligence could facilitate unauthorized access by revealing permission boundaries. The SCRIPTING_ENABLED requirement adds sensitivity.

From the tool's definition Tool name is 'list_acls' and description states 'List Access Control rules' — the verb 'List' and the action of retrieving ACL information indicate data retrieval with no modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_acls safely

PolicyLayer is an MCP gateway: it sits between your AI agents and ServiceNow-MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_acls, this is the rule to start with:

list_acls Allowed

list_acls is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_acls": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect ServiceNow-MCP, apply this rule, and every list_acls call is checked against it from then on.

FAQ

Questions about list_acls

What does the list_acls tool do? +

List Access Control rules (ACLs) — who can read/write/create/delete records (requires SCRIPTING_ENABLED=true). It is categorised as a Read tool in the ServiceNow-MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_acls? +

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

list_acls is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_acls? +

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

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

list_acls 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.

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