set_component_property · MCP For Unity MCP: Risk & Policy

WHAT IT DOES

What set_component_property does on MCP For Unity

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

WHY IT NEEDS A POLICY

Why set_component_property needs a policy

This tool modifies component properties in Unity projects, which is a reversible write operation. While the tool can alter project state significantly (affecting game object behavior, materials, scripts, etc.), the changes are not irreversible (properties can be reset/undone in most contexts).

From the tool's definition Tool name 'set_component_property' directly indicates modification of component properties in Unity Editor.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_component_property Rate-limited

set_component_property 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_component_property": {
      "limits": [
        {
          "counter": "set_component_property_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches MCP For Unity, so you can run agents against it safely.

FAQ

Questions about set_component_property

What does the set_component_property tool do? +

set_component_property. It is categorised as a Write tool in the MCP For Unity 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_component_property? +

Register the MCP For Unity MCP server in PolicyLayer and add a rule for set_component_property: 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 MCP For Unity. Nothing to install.

What risk level is set_component_property? +

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

Can I rate-limit set_component_property? +

Yes. Add a rate_limit block to the set_component_property 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_component_property completely? +

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

set_component_property is provided by the MCP For Unity MCP server (yunuscan/mcpforunity). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.