export_asset · Unreal MCP: Risk & Policy

WHAT IT DOES

What export_asset does on Unreal

AI agents use export_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 export_asset needs a policy

Exporting assets creates new files on disk and could potentially overwrite existing files depending on implementation. While not destructive (original asset remains intact) and not as severe as file deletion, it represents a write operation with moderate risk if misused—an AI agent could export sensitive assets, large volumes of data, or corrupt export formats.

From the tool's definition Tool name 'export_asset' and description 'Export an asset to an external file format' indicate the tool creates or writes data to external files. This is a write operation that modifies the file system by generating new files.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

export_asset Rate-limited

export_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": {
    "export_asset": {
      "limits": [
        {
          "counter": "export_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 export_asset

What does the export_asset tool do? +

Export an asset to an external file format. 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 export_asset? +

Register the Unreal MCP server in PolicyLayer and add a rule for export_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 export_asset? +

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

Can I rate-limit export_asset? +

Yes. Add a rate_limit block to the export_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 export_asset completely? +

Set action: deny in the PolicyLayer policy for export_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 export_asset? +

export_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.