rhino_set_control_points

Replace control points of a NURBS curve or surface.

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-set-control-points.md

WHAT IT DOES

What rhino_set_control_points does on Rhino

AI agents use rhino_set_control_points 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_set_control_points is rated Medium

The tool creates or modifies data reversibly. Replacing control points changes the shape/geometry of curves or surfaces but does not delete objects or produce permanent, irreversible destruction. The modification is reversible through undo operations or re-running the tool with different parameters.

From the tool's definition Tool description states 'Replace control points of a NURBS curve or surface' — this modifies geometric data in Rhino by altering existing NURBS objects rather than deleting them.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs rhino_set_control_points 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_set_control_points, this is the rule to start with:

rhino_set_control_points Rate-limited

rhino_set_control_points 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_set_control_points": {
      "limits": [
        {
          "counter": "rhino_set_control_points_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_set_control_points call is checked against it from then on.

FAQ

Questions about rhino_set_control_points

What does the rhino_set_control_points tool do? +

Replace control points of a NURBS curve or surface. 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_set_control_points? +

Register the Rhino MCP server in PolicyLayer and add a rule for rhino_set_control_points: 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_set_control_points? +

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

Can I rate-limit rhino_set_control_points? +

Yes. Add a rate_limit block to the rhino_set_control_points 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_set_control_points completely? +

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

rhino_set_control_points 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.

KEEP EXPLORING

More on Rhino, and thousands of servers like it.

This server

All 245 Rhino tools →

Across the catalogue

set-prioity on Kanban MCP Server →team_manager_set_sources on Team Manager MCP →qt_set_property on Qt → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →