get_material_instance_parameters

Get all overridable parameters from a Material Instance (scalar, vector, texture, switch).

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/get-material-instance-parameters.md

WHAT IT DOES

What get_material_instance_parameters does on Unreal-MCP

AI agents call get_material_instance_parameters 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 get_material_instance_parameters is rated Low

This tool queries and retrieves material instance parameter data from Unreal Engine without modifying, creating, deleting, or executing any operations. It is purely informational retrieval, placing it squarely in the Read category with low severity since misuse would only expose design data, not cause destructive or operational harm.

From the tool's definition Tool name and description: 'Get all overridable parameters from a Material Instance (scalar, vector, texture, switch).' The verb 'get' and the action of retrieving parameters indicates this is a read-only operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

get_material_instance_parameters Allowed

get_material_instance_parameters 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": {
    "get_material_instance_parameters": {}
  }
}

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 get_material_instance_parameters call is checked against it from then on.

FAQ

Questions about get_material_instance_parameters

What does the get_material_instance_parameters tool do? +

Get all overridable parameters from a Material Instance (scalar, vector, texture, switch). 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 get_material_instance_parameters? +

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

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

Can I rate-limit get_material_instance_parameters? +

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

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

get_material_instance_parameters 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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