This record as markdown: /tools/jjpxdev-unreal-mcp/duplicate-asset.md
What duplicate_asset does on Unreal
AI agents use duplicate_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.
| Parameter | Type | Required | Description |
|---|---|---|---|
source_path | string | Yes | Source asset path |
destination_path | string | Yes | Destination asset path |
Parameters from the server's own tool schema.
Why duplicate_asset is rated Medium
Duplicating an asset creates a new copy at a specified path, which is a reversible write operation. It does not delete or overwrite existing data, move money, or execute code. The blast radius is medium since it could create unintended asset copies in a project.
From the tool's definition Duplicate an asset to a new path
Risk signalsAccepts file system path (source_path)
Attacks that exploit this kind of access
The rule that runs duplicate_asset safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Unreal, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For duplicate_asset, this is the rule to start with:
duplicate_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.
The button opens the PolicyLayer dashboard: create your workspace, connect Unreal, apply this rule, and every duplicate_asset call is checked against it from then on.
Questions about duplicate_asset
Duplicate an asset to a new path. 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.
duplicate_asset accepts 2 parameters: source_path, destination_path. Required: source_path, destination_path. The full parameter table on this page comes from the server's own tool schema.
Register the Unreal MCP server in PolicyLayer and add a rule for duplicate_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.
duplicate_asset is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the duplicate_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.
Set action: deny in the PolicyLayer policy for duplicate_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.
duplicate_asset is provided by the Unreal MCP server (@jjpxdev/unreal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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