unity_uma_register_assets

SERVERUnity MCP Server SOURCEanklebreaker-studio/unity-mcp-server

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/anklebreaker-studio-unity-mcp-server/unity-uma-register-assets.md

WHAT IT DOES

What unity_uma_register_assets does on Unity MCP Server

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

RISK

Why unity_uma_register_assets is rated Medium

The tool creates or modifies runtime asset registrations within Unity's UMA (Ultimate Character Creator) system. This is a Write operation because it persists configuration changes to the global library that affect runtime behavior.

From the tool's definition Tool name contains 'register' and description states it registers UMA assets 'in the UMA Global Library so they are available at runtime.' This modifies the asset registry state.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs unity_uma_register_assets safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Unity MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For unity_uma_register_assets, this is the rule to start with:

unity_uma_register_assets Rate-limited

unity_uma_register_assets 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": {
    "unity_uma_register_assets": {
      "limits": [
        {
          "counter": "unity_uma_register_assets_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 Unity MCP Server, apply this rule, and every unity_uma_register_assets call is checked against it from then on.

FAQ

Questions about unity_uma_register_assets

What does the unity_uma_register_assets tool do? +

Register UMA assets (Slot, Overlay, or WardrobeRecipe) in the UMA Global Library so they are available at runtime. It is categorised as a Write tool in the Unity MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on unity_uma_register_assets? +

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

What risk level is unity_uma_register_assets? +

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

Can I rate-limit unity_uma_register_assets? +

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

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

unity_uma_register_assets is provided by the Unity MCP Server MCP server (anklebreaker-studio/unity-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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