link_niagara_parameter

A write tool on the Unreal- MCP server.

SERVERUnreal-MCP SOURCEaadeshrao123/unreal-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aadeshrao123-unreal-mcp/link-niagara-parameter.md

WHAT IT DOES

What link_niagara_parameter does on Unreal-MCP

AI agents use link_niagara_parameter to create or update resources in Unreal-MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Unreal-MCP environment.

RISK

Why link_niagara_parameter is rated Medium

The tool operates within Unreal Engine 5's Niagara particle VFX system and appears to establish or modify parameter connections. This is a reversible modification operation (parameters can be re-linked or unlinked). While it could theoretically affect rendering or simulation behavior, it does not execute arbitrary code, delete assets, or cause financial impact.

From the tool's definition Tool name 'link_niagara_parameter' indicates modification of Niagara VFX system parameters; sibling tools like 'add_blueprint_node', 'add_component_to_blueprint', 'add_data_table_row' are all Write operations that create or modify engine assets.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

link_niagara_parameter Rate-limited

link_niagara_parameter stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "link_niagara_parameter": {
      "limits": [
        {
          "counter": "link_niagara_parameter_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about link_niagara_parameter

What does the link_niagara_parameter tool do? +

link_niagara_parameter is a write tool on the Unreal MCP server. It is categorised as a Write tool in the Unreal-MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on link_niagara_parameter? +

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

link_niagara_parameter is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit link_niagara_parameter? +

Yes. Add a rate_limit block to the link_niagara_parameter 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 link_niagara_parameter completely? +

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

link_niagara_parameter 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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