list_portal_themes

List Service Portal themes (color palettes, CSS variables)

SERVERServiceNow MCP Server SOURCE@aartiq/servicenow-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/servicenow-mcp-server/list-portal-themes.md

WHAT IT DOES

What list_portal_themes does on ServiceNow MCP Server

AI agents call list_portal_themes to retrieve information from ServiceNow MCP Server 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_portal_themes is rated Low

This tool queries and returns Service Portal theme information (color palettes, CSS variables) without creating, modifying, deleting, or executing any operations. It is a read-only retrieval operation with no blast radius if misused by an AI agent—it cannot alter system state, execute code, or access sensitive business data beyond publicly-available theme configurations.

From the tool's definition Tool name 'list_portal_themes' and description 'List Service Portal themes (color palettes, CSS variables)' indicate retrieval of theme metadata without modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

list_portal_themes Allowed

list_portal_themes 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_portal_themes": {}
  }
}

ALLOW ONLY 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 list_portal_themes call is checked against it from then on.

FAQ

Questions about list_portal_themes

What does the list_portal_themes tool do? +

List Service Portal themes (color palettes, CSS variables). It is categorised as a Read tool in the ServiceNow MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_portal_themes? +

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

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

Can I rate-limit list_portal_themes? +

Yes. Add a rate_limit block to the list_portal_themes 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_portal_themes completely? +

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

list_portal_themes 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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