gh_load_template
Open a bundled template on the canvas and return its template_id + parameter map.
This record as markdown: /tools/easehee-rhino-mcp/gh-load-template.md
What gh_load_template does on Rhino
AI agents use gh_load_template 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 gh_load_template is rated Medium
Loading a template onto the canvas creates new content in the Grasshopper environment, which is a reversible write/modification action. It does not execute code or delete data, but it does alter the state of the canvas by adding components and connections from the template.
From the tool's definition 'Open a bundled template on the canvas' — loads and places content onto the Grasshopper canvas, modifying the current working environment.
Attacks that exploit this kind of access
The rule that runs gh_load_template 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 gh_load_template, this is the rule to start with:
gh_load_template 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 gh_load_template call is checked against it from then on.
Questions about gh_load_template
Open a bundled template on the canvas and return its template_id + parameter map. 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 gh_load_template: 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.
gh_load_template 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 gh_load_template 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 gh_load_template. 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.
gh_load_template 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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