list_niagara_systems

List Niagara System assets in the project.

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-niagara-systems.md

WHAT IT DOES

What list_niagara_systems does on Unreal-MCP

AI agents call list_niagara_systems 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_niagara_systems is rated Low

This tool queries and returns a list of existing Niagara System assets without modifying, creating, deleting, or executing any operations. It has minimal blast radius—the worst outcome is an AI agent retrieving information it shouldn't have access to, but no actual changes to the project occur.

From the tool's definition Tool name 'list_niagara_systems' and description 'List Niagara System assets in the project' indicate a retrieval/query operation with no side effects. The verb 'list' is explicitly Read-category.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

list_niagara_systems Allowed

list_niagara_systems 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_niagara_systems": {}
  }
}

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_niagara_systems call is checked against it from then on.

FAQ

Questions about list_niagara_systems

What does the list_niagara_systems tool do? +

List Niagara System assets in the project. 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_niagara_systems? +

Register the Unreal MCP server in PolicyLayer and add a rule for list_niagara_systems: 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_niagara_systems? +

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

Can I rate-limit list_niagara_systems? +

Yes. Add a rate_limit block to the list_niagara_systems 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_niagara_systems completely? +

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

list_niagara_systems 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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