list_trigger_types

List all available UInputTrigger subclasses with their editable properties.

SERVERUnreal-MCP SOURCEaadeshrao123/unreal-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/aadeshrao123-unreal-mcp/list-trigger-types.md

WHAT IT DOES

What list_trigger_types does on Unreal-MCP

AI agents call list_trigger_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.

RISK

Why list_trigger_types is rated Low

This tool performs a read-only query of available UInputTrigger subclasses and their properties. It retrieves data for informational purposes only, with no side effects, modifications, or external operations triggered. The blast radius of misuse is minimal — an agent could only obtain information about trigger types already available in the Unreal Engine system.

From the tool's definition Tool name and description: 'List all available UInputTrigger subclasses with their editable properties' — this is a query/list operation that retrieves information about available input trigger types without modifying any state.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

list_trigger_types Allowed

list_trigger_types 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_trigger_types": {}
  }
}

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

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

FAQ

Questions about list_trigger_types

What does the list_trigger_types tool do? +

List all available UInputTrigger subclasses with their editable properties. It is categorised as a Read tool in the Unreal-MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_trigger_types? +

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

What risk level is list_trigger_types? +

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

Can I rate-limit list_trigger_types? +

Yes. Add a rate_limit block to the list_trigger_types 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_trigger_types completely? +

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

list_trigger_types is provided by the Unreal MCP server (aadeshrao123/unreal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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