rhino_plane_surface

Add a finite plane (rectangular trim) on the given plane.

SERVERRhino SOURCEeasehee/rhino-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/easehee-rhino-mcp/rhino-plane-surface.md

WHAT IT DOES

What rhino_plane_surface does on Rhino

AI agents use rhino_plane_surface to create or update resources in Rhino, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Rhino environment.

RISK

Why rhino_plane_surface is rated Medium

This tool creates new geometric entities (plane surfaces) in Rhino, which modifies the model state reversibly. This is a Write operation rather than Read (retrieves data), Execute (runs arbitrary code), Destructive (irreversibly deletes), or Financial.

From the tool's definition Tool description states 'Add a finite plane (rectangular trim) on the given plane' - the verb 'Add' indicates creation of geometry data in the Rhino 3D model.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs rhino_plane_surface safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Rhino, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For rhino_plane_surface, this is the rule to start with:

rhino_plane_surface Rate-limited

rhino_plane_surface 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "rhino_plane_surface": {
      "limits": [
        {
          "counter": "rhino_plane_surface_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about rhino_plane_surface

What does the rhino_plane_surface tool do? +

Add a finite plane (rectangular trim) on the given plane. It is categorised as a Write tool in the Rhino MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rhino_plane_surface? +

Register the Rhino MCP server in PolicyLayer and add a rule for rhino_plane_surface: 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 Rhino. Nothing to install.

What risk level is rhino_plane_surface? +

rhino_plane_surface is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit rhino_plane_surface? +

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

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

rhino_plane_surface is provided by the Rhino MCP server (easehee/rhino-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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