rhino_set_user_text

Attach a key-value user text entry to an object.

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-user-text.md

WHAT IT DOES

What rhino_set_user_text does on Rhino

AI agents use rhino_set_user_text 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_user_text is rated Medium

This tool creates or modifies metadata on Rhino objects. It is reversible (the user text can be removed or changed), making it a Write operation rather than Destructive. The severity is medium because misuse could pollute object metadata or cause downstream issues in Grasshopper definitions or exports, but the impact is localized to object properties and not irreversible.

From the tool's definition Tool description states 'Attach a key-value user text entry to an object' — this modifies object metadata by adding or updating a user text property, which is a reversible write operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs rhino_set_user_text 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_user_text, this is the rule to start with:

rhino_set_user_text Rate-limited

rhino_set_user_text 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_user_text": {
      "limits": [
        {
          "counter": "rhino_set_user_text_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_user_text call is checked against it from then on.

FAQ

Questions about rhino_set_user_text

What does the rhino_set_user_text tool do? +

Attach a key-value user text entry to an object. 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_user_text? +

Register the Rhino MCP server in PolicyLayer and add a rule for rhino_set_user_text: 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_user_text? +

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

Can I rate-limit rhino_set_user_text? +

Yes. Add a rate_limit block to the rhino_set_user_text 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_user_text completely? +

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

rhino_set_user_text 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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