rhino_annotation_north_arrow
Draw a north arrow centred on location.
This record as markdown: /tools/easehee-rhino-mcp/rhino-annotation-north-arrow.md
What rhino_annotation_north_arrow does on Rhino
AI agents use rhino_annotation_north_arrow 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_annotation_north_arrow is rated Medium
This tool creates a new annotation object (a north arrow) in the Rhino 3D model, which is a reversible write operation. While it modifies the model state, annotations can be deleted or modified, making it Write rather than Destructive. The severity is medium because misuse could clutter or corrupt a design document, but the operation is easily undone.
From the tool's definition Tool name includes 'annotation' and description states 'Draw a north arrow', indicating it creates/adds a graphic element to the Rhino model at a specified location.
Attacks that exploit this kind of access
The rule that runs rhino_annotation_north_arrow 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_annotation_north_arrow, this is the rule to start with:
rhino_annotation_north_arrow 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_annotation_north_arrow call is checked against it from then on.
Questions about rhino_annotation_north_arrow
Draw a north arrow centred on location. 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_annotation_north_arrow: 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_annotation_north_arrow 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_annotation_north_arrow 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_annotation_north_arrow. 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_annotation_north_arrow 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.
More on Rhino, and thousands of servers like it.
This server
Across the catalogue