unity_probuilder_delete_faces

Delete the selected faces from the mesh (creates holes / open geometry).

SERVERUnity MCP Server SOURCEanklebreaker-studio/unity-mcp-server

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/anklebreaker-studio-unity-mcp-server/unity-probuilder-delete-faces.md

WHAT IT DOES

What unity_probuilder_delete_faces does on Unity MCP Server

AI agents call unity_probuilder_delete_faces 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.

RISK

Why unity_probuilder_delete_faces is rated Critical

This tool permanently removes mesh geometry (faces) from a 3D model, creating holes or open geometry. While the action might be technically reversible via undo stacks, the tool itself performs irreversible deletion of asset data. In the context of an AI agent with autonomy over project assets, misuse could destroy significant work.

From the tool's definition Tool name explicitly contains 'delete' and description states 'Delete the selected faces from the mesh', which irreversibly removes geometry data and cannot be undone without undo/version control.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs unity_probuilder_delete_faces 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_probuilder_delete_faces, this is the rule to start with:

unity_probuilder_delete_faces Hidden

unity_probuilder_delete_faces is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "unity_probuilder_delete_faces"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Unity MCP Server, apply this rule, and every unity_probuilder_delete_faces call is checked against it from then on.

FAQ

Questions about unity_probuilder_delete_faces

What does the unity_probuilder_delete_faces tool do? +

Delete the selected faces from the mesh (creates holes / open geometry). 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.

How do I enforce a policy on unity_probuilder_delete_faces? +

Register the Unity MCP Server MCP server in PolicyLayer and add a rule for unity_probuilder_delete_faces: 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.

What risk level is unity_probuilder_delete_faces? +

unity_probuilder_delete_faces is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit unity_probuilder_delete_faces? +

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

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

unity_probuilder_delete_faces 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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