rhino_export_step

Export to STEP (bridge required).

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-export-step.md

WHAT IT DOES

What rhino_export_step does on Rhino

AI agents use rhino_export_step 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_export_step is rated Medium

The tool writes/exports geometry data to STEP format, which creates or overwrites a file. This is reversible (files can be deleted or replaced), so it falls under Write rather than Destructive. The blast radius is medium because file creation in a CAD context could affect design workflows or storage, but the operation is not inherently destructive or irreversible.

From the tool's definition Tool name 'rhino_export_step' and description 'Export to STEP' indicate file creation/writing. STEP is a standard CAD format; exporting creates a new file artifact.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs rhino_export_step 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_export_step, this is the rule to start with:

rhino_export_step Rate-limited

rhino_export_step 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_export_step": {
      "limits": [
        {
          "counter": "rhino_export_step_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_export_step call is checked against it from then on.

FAQ

Questions about rhino_export_step

What does the rhino_export_step tool do? +

Export to STEP (bridge required). 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_export_step? +

Register the Rhino MCP server in PolicyLayer and add a rule for rhino_export_step: 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_export_step? +

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

Can I rate-limit rhino_export_step? +

Yes. Add a rate_limit block to the rhino_export_step 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_export_step completely? +

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

rhino_export_step 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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