Get a list of categories for a specific asset type on Polyhaven. Parameters: - asset_type: The type of asset to get categories for (hdris, textures, models, all)
AI agents call get_polyhaven_categories to retrieve information from Tripo MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves metadata about available asset categories from Polyhaven. It performs no modifications, execution of code, deletion, or financial operations. It is a straightforward read-only query operation with minimal risk if misused by an AI agent.
From the tool's definition Tool name 'get_polyhaven_categories' and description 'Get a list of categories' indicate a retrieval operation with no side effects. The parameter 'asset_type' is a simple filter for querying available categories.
Documented attack patterns abuse exactly the kind of access get_polyhaven_categories gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Tripo MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_polyhaven_categories:
{
"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.
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Get a list of categories for a specific asset type on Polyhaven. Parameters: - asset_type: The type of asset to get categories for (hdris, textures, models, all). It is categorised as a Read tool in the Tripo MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Tripo MCP Server 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 Tripo MCP Server. Nothing to install.
get_polyhaven_categories 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_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.
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.
get_polyhaven_categories is provided by the Tripo MCP Server MCP server (vast-ai-research/tripo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 16 Tripo MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
16 Tripo MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.