set_material_properties

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/set-material-properties.md

WHAT IT DOES

What set_material_properties does on Unreal-MCP

AI agents use set_material_properties 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 set_material_properties is rated Medium

The tool modifies material properties in an Unreal Engine editor context, which is a reversible change (materials can be re-edited or reverted). This is Write-category behavior. Severity is high because misuse could corrupt asset appearance or functionality across many game assets, but not critical since changes are non-destructive and can be undone in the editor.

From the tool's definition Tool name 'set_material_properties' indicates modification of material data in Unreal Engine 5; sibling tools like 'add_blueprint_node' and 'add_component_to_blueprint' are clearly creation/modification operations, establishing the Write pattern for this…

Attacks that exploit this kind of access

RECOMMENDED RULE

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

set_material_properties Rate-limited

set_material_properties 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": {
    "set_material_properties": {
      "limits": [
        {
          "counter": "set_material_properties_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 set_material_properties call is checked against it from then on.

FAQ

Questions about set_material_properties

What does the set_material_properties tool do? +

set_material_properties 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 set_material_properties? +

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

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

Can I rate-limit set_material_properties? +

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

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

set_material_properties 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.

KEEP EXPLORING

More on Unreal, and thousands of servers like it.

This server

All 286 Unreal tools →

Across the catalogue

set-prioity on Kanban MCP Server →team_manager_set_sources on Team Manager MCP →qt_set_property on Qt → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →