rhino_interpolate_curve
Add an interpolated NURBS curve passing through the given points.
This record as markdown: /tools/easehee-rhino-mcp/rhino-interpolate-curve.md
What rhino_interpolate_curve does on Rhino
AI agents use rhino_interpolate_curve 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.
Why rhino_interpolate_curve is rated Medium
The tool performs a creation operation (Add) that modifies the Rhino 3D model by inserting a new geometric object. This is a Write operation because it modifies the design but is reversible (the curve can be deleted). It is not Destructive because it doesn't irreversibly delete or overwrite data.
From the tool's definition Tool description states 'Add an interpolated NURBS curve' — this creates and adds geometry to the Rhino model, which is a reversible modification of the design state.
Attacks that exploit this kind of access
The rule that runs rhino_interpolate_curve 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_interpolate_curve, this is the rule to start with:
rhino_interpolate_curve 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 Rhino, apply this rule, and every rhino_interpolate_curve call is checked against it from then on.
Questions about rhino_interpolate_curve
Add an interpolated NURBS curve passing through the given points. 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.
Register the Rhino MCP server in PolicyLayer and add a rule for rhino_interpolate_curve: 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.
rhino_interpolate_curve 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 rhino_interpolate_curve 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 rhino_interpolate_curve. 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.
rhino_interpolate_curve 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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