list_relationships

Show parent and child relationships for a CI

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-relationships.md

WHAT IT DOES

What list_relationships does on ServiceNow-MCP

AI agents call list_relationships 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_relationships is rated Low

This tool retrieves and displays existing parent-child relationship information from a Configuration Item (CI) in ServiceNow's CMDB. It performs a query operation with no side effects, data modification, or external command execution. The read-only nature and informational purpose place it clearly in the Read category with low severity.

From the tool's definition Tool name 'list_relationships' and description 'Show parent and child relationships for a CI' indicate querying/retrieval of relationship data without modification or execution.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

list_relationships Allowed

list_relationships 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_relationships": {}
  }
}

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_relationships call is checked against it from then on.

FAQ

Questions about list_relationships

What does the list_relationships tool do? +

Show parent and child relationships for a CI. 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_relationships? +

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

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

Can I rate-limit list_relationships? +

Yes. Add a rate_limit block to the list_relationships 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_relationships completely? +

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

list_relationships 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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