rhino_document_units_set

Set the document unit system, optionally scaling existing geometry.

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-document-units-set.md

WHAT IT DOES

What rhino_document_units_set does on Rhino

AI agents use rhino_document_units_set 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_document_units_set is rated Medium

This tool creates or modifies data (document unit system and geometry scaling) in a reversible manner. It does not execute arbitrary code, delete data irreversibly, or move money. While it affects geometry, the change can be undone and is a configuration write operation typical of CAD software.

From the tool's definition Tool description explicitly states it 'Set[s] the document unit system, optionally scaling existing geometry.' The 'set' operation modifies document properties and potentially transforms all existing geometry through scaling, which is reversible through undo…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs rhino_document_units_set 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_document_units_set, this is the rule to start with:

rhino_document_units_set Rate-limited

rhino_document_units_set 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_document_units_set": {
      "limits": [
        {
          "counter": "rhino_document_units_set_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_document_units_set call is checked against it from then on.

FAQ

Questions about rhino_document_units_set

What does the rhino_document_units_set tool do? +

Set the document unit system, optionally scaling existing geometry. 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_document_units_set? +

Register the Rhino MCP server in PolicyLayer and add a rule for rhino_document_units_set: 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_document_units_set? +

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

Can I rate-limit rhino_document_units_set? +

Yes. Add a rate_limit block to the rhino_document_units_set 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_document_units_set completely? +

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

rhino_document_units_set 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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