rename_asset · Unreal MCP: Risk & Policy

WHAT IT DOES

What rename_asset does on Unreal

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

WHY IT NEEDS A POLICY

Why rename_asset needs a policy

Renaming or moving an asset modifies its properties but does not destroy data or prevent undo. This is a Write operation—it creates or modifies data reversibly. While it could disrupt project state if applied recklessly (e.g., renaming a critical asset referenced elsewhere), it remains reversible and does not permanently delete or trigger external financial/code execution effects.

From the tool's definition Tool is named 'rename_asset' with description 'Rename or move an asset.' These are reversible modifications to asset metadata/location within Unreal Engine.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rename_asset Rate-limited

rename_asset 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": {
    "rename_asset": {
      "limits": [
        {
          "counter": "rename_asset_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 Unreal, so you can run agents against it safely.

FAQ

Questions about rename_asset

What does the rename_asset tool do? +

Rename or move an asset. It is categorised as a Write tool in the Unreal MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rename_asset? +

Register the Unreal MCP server in PolicyLayer and add a rule for rename_asset: 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. Nothing to install.

What risk level is rename_asset? +

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

Can I rate-limit rename_asset? +

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

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

rename_asset is provided by the Unreal MCP server (sam-david/unreal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.