unity_gameobject_delete
Delete a GameObject by path or name. Refuses if its runtime mesh is shared by other
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What unity_gameobject_delete does on Unity MCP Server
AI agents call unity_gameobject_delete to permanently remove resources in Unity MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why unity_gameobject_delete is rated Critical
This tool performs an irreversible deletion operation on scene objects. While it includes a safeguard (refusing deletion if the mesh is shared), the core action is destructive — deleted GameObjects cannot be recovered without undo functionality, which depends on editor state. In an agent context, accidental or malicious deletion of scene objects could damage project integrity.
From the tool's definition Tool name contains 'delete' and description states 'Delete a GameObject by path or name'. The function irreversibly removes a GameObject from the Unity scene.
Attacks that exploit this kind of access
The rule that runs unity_gameobject_delete safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Unity MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For unity_gameobject_delete, this is the rule to start with:
unity_gameobject_delete is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Unity MCP Server, apply this rule, and every unity_gameobject_delete call is checked against it from then on.
Questions about unity_gameobject_delete
Delete a GameObject by path or name. Refuses if its runtime mesh is shared by other. It is categorised as a Destructive tool in the Unity MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Unity MCP Server MCP server in PolicyLayer and add a rule for unity_gameobject_delete: 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 Unity MCP Server. Nothing to install.
unity_gameobject_delete 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 unity_gameobject_delete 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 unity_gameobject_delete. 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.
unity_gameobject_delete is provided by the Unity MCP Server MCP server (anklebreaker-studio/unity-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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