AI agents call delete_actor to permanently remove resources in Unreal — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes objects from an Unreal Engine scene. Deletions cannot be undone programmatically by the tool itself, making this a destructive action. While undo functionality might exist in the editor UI, the tool's direct operation is irreversible.
From the tool's definition Tool name is 'delete_actor' and description states 'Delete a specific actor from the Unreal Engine level.' The word 'delete' combined with the action of removing actors from a level indicates an irreversible operation.
Documented attack patterns abuse exactly the kind of access delete_actor gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Unreal, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_actor:
{
"version": "1",
"default": "deny",
"hide": [
"delete_actor"
]
}delete_actor disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
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Delete a specific actor from the Unreal Engine level. It is categorised as a Destructive tool in the Unreal MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Unreal MCP server in PolicyLayer and add a rule for delete_actor: 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.
delete_actor is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_actor 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 delete_actor. 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.
delete_actor is provided by the Unreal MCP server (runeape-sats/unreal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 21 Unreal tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
21 Unreal tools catalogued and risk-classified — across an index of 42,500+ MCP servers.