unity_probuilder_extrude_faces
Extrude selected faces outward along their normals (or as individual faces).
This record as markdown: /tools/anklebreaker-studio-unity-mcp-server/unity-probuilder-extrude-faces.md
What unity_probuilder_extrude_faces does on Unity MCP Server
AI agents use unity_probuilder_extrude_faces to create or update resources in Unity MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Unity MCP Server environment.
Why unity_probuilder_extrude_faces is rated Medium
Extruding faces modifies the geometry of a 3D mesh in Unity's ProBuilder by creating new polygonal faces and transforming existing ones. This is a reversible mesh modification (can be undone), making it a Write operation. Misuse could corrupt mesh geometry but is generally reversible via undo.
From the tool's definition Extrude selected faces outward along their normals (or as individual faces)
Attacks that exploit this kind of access
The rule that runs unity_probuilder_extrude_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_extrude_faces, this is the rule to start with:
unity_probuilder_extrude_faces 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 Unity MCP Server, apply this rule, and every unity_probuilder_extrude_faces call is checked against it from then on.
Questions about unity_probuilder_extrude_faces
Extrude selected faces outward along their normals (or as individual faces). It is categorised as a Write tool in the Unity MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Unity MCP Server MCP server in PolicyLayer and add a rule for unity_probuilder_extrude_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.
unity_probuilder_extrude_faces 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 unity_probuilder_extrude_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.
Set action: deny in the PolicyLayer policy for unity_probuilder_extrude_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.
unity_probuilder_extrude_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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