reimport_skeletal_mesh · Unreal MCP: Risk & Policy

WHAT IT DOES

What reimport_skeletal_mesh does on Unreal

AI agents use reimport_skeletal_mesh 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 reimport_skeletal_mesh needs a policy

This tool modifies skeletal mesh assets by reimporting them, which is a reversible write operation. While it affects game assets and could impact project state if misused (e.g., importing corrupted or malicious mesh data), it does not delete data (Destructive), execute arbitrary code (Execute), cause financial transactions (Financial), or merely read data (Read).

From the tool's definition Tool name 'reimport_skeletal_mesh' and description 'Reimport a skeletal mesh from its source file' indicate modification of existing assets by reloading/updating them from source.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reimport_skeletal_mesh Rate-limited

reimport_skeletal_mesh 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": {
    "reimport_skeletal_mesh": {
      "limits": [
        {
          "counter": "reimport_skeletal_mesh_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 reimport_skeletal_mesh

What does the reimport_skeletal_mesh tool do? +

Reimport a skeletal mesh from its source file. 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 reimport_skeletal_mesh? +

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

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

Can I rate-limit reimport_skeletal_mesh? +

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

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

reimport_skeletal_mesh 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.