Read the current output values from a Grasshopper definition without
AI agents call get_grasshopper_outputs to retrieve information from GOLEM-3DMCP-Rhino- without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves output data from an existing Grasshopper definition without making any changes, executing code, or triggering side effects. It is a pure read operation with minimal security risk.
From the tool's definition Tool name 'get_grasshopper_outputs' and description 'Read the current output values from a Grasshopper definition' explicitly indicate data retrieval with the verb 'Read'. No modification, deletion, execution, or financial impact occurs.
Documented attack patterns abuse exactly the kind of access get_grasshopper_outputs gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and GOLEM-3DMCP-Rhino-, and nothing reaches the server without passing your rules. This is the rule we recommend for get_grasshopper_outputs:
{
"version": "1",
"default": "deny",
"tools": {
"get_grasshopper_outputs": {}
}
}get_grasshopper_outputs is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Read the current output values from a Grasshopper definition without. It is categorised as a Read tool in the GOLEM-3DMCP-Rhino- MCP Server, which means it retrieves data without modifying state.
Register the GOLEM-3DMCP-Rhino- MCP server in PolicyLayer and add a rule for get_grasshopper_outputs: 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 GOLEM-3DMCP-Rhino-. Nothing to install.
get_grasshopper_outputs is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_grasshopper_outputs 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 get_grasshopper_outputs. 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.
get_grasshopper_outputs is provided by the GOLEM-3DMCP-Rhino- MCP server (thekinghippopotamus/golem-3dmcp-rhino-). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from GOLEM-3DMCP-Rhino-, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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89 GOLEM-3DMCP-Rhino- tools catalogued and risk-classified — across an index of 43,000+ MCP servers.