get_polyhaven_categories

THE RISK

Low Risk

Why get_polyhaven_categories needs a policy

This tool retrieves metadata (category listings) from PolyHaven without creating, modifying, deleting, or executing anything. It is a purely informational query with no side effects or blast radius if misused by an AI agent.

From the tool's definition Tool name indicates 'get' operation; description states 'Get a list of categories' with no modification, deletion, or execution capability.

Documented attack patterns abuse exactly the kind of access get_polyhaven_categories gives an agent:

POLICY

How to control get_polyhaven_categories

PolicyLayer is an MCP gateway — it sits between your AI agents and Blender MCP for Antigravity, and nothing reaches the server without passing your rules. This is the rule we recommend for get_polyhaven_categories:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_polyhaven_categories": {}
  }
}

get_polyhaven_categories is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Blender MCP for Antigravity — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

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Go deeper

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FAQ

Questions about get_polyhaven_categories

What does the get_polyhaven_categories tool do? +

Get a list of categories for a specific asset type on Polyhaven. It is categorised as a Read tool in the Blender MCP for Antigravity MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_polyhaven_categories? +

Register the Blender MCP for Antigravity MCP server in PolicyLayer and add a rule for get_polyhaven_categories: 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 Blender MCP for Antigravity. Nothing to install.

What risk level is get_polyhaven_categories? +

get_polyhaven_categories is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_polyhaven_categories? +

Yes. Add a rate_limit block to the get_polyhaven_categories 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 get_polyhaven_categories completely? +

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

get_polyhaven_categories is provided by the Blender MCP for Antigravity MCP server (kc0ed/blender-mcp-for-antigravity). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Blender MCP for Antigravity tool call.

Start from Blender MCP for Antigravity, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →