blender_list_tools
AI agents call blender_list_tools to retrieve information from Blender without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name contains 'list', which is a classic Read operation that retrieves information about available Blender tools without modifying, executing, or destroying anything. The empty description prevents higher confidence, but the naming pattern is clear. This would typically be used for discovery purposes only.
From the tool's definition Tool name 'blender_list_tools' indicates enumeration/listing of available tools. No description provided, but the 'list' verb strongly suggests data retrieval without side effects.
Documented attack patterns abuse exactly the kind of access blender_list_tools gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Blender, and nothing reaches the server without passing your rules. This is the rule we recommend for blender_list_tools:
{
"version": "1",
"default": "deny",
"tools": {
"blender_list_tools": {}
}
}blender_list_tools is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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blender_list_tools. It is categorised as a Read tool in the Blender MCP Server, which means it retrieves data without modifying state.
Register the Blender MCP server in PolicyLayer and add a rule for blender_list_tools: 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. Nothing to install.
blender_list_tools 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 blender_list_tools 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 blender_list_tools. 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.
blender_list_tools is provided by the Blender MCP server (sandraschi/blender-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Blender, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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77 Blender tools catalogued and risk-classified — across an index of 43,000+ MCP servers.