list_modifier_types

What list_modifier_types does on Unreal-MCP

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

Why list_modifier_types is rated Low

This tool performs introspection/enumeration of Unreal Engine's input modifier class hierarchy and their properties. It reads metadata about available classes but does not create, modify, delete, or execute any operations. The blast radius is minimal—worst case, an AI agent retrieves information about input modifiers but cannot cause side effects with this tool alone.

From the tool's definition Tool name contains 'list' and description states it 'List all available UInputModifier subclasses with their editable properties' — a query operation that retrieves and enumerates existing data without modification or execution.

The rule that runs list_modifier_types safely

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

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

Questions about list_modifier_types