Low Risk

list_scenes

List all scenes in the current Blender file.

How to control list_scenes ↓

What list_scenes does on Blender

AI agents call list_scenes 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.

Low Risk

Why list_scenes needs a policy

This tool queries and retrieves information about existing scenes in a Blender file. It has no side effects, does not create, modify, or delete data, and poses minimal security risk. It falls clearly into the Read category.

From the tool's definition Tool description: 'List all scenes in the current Blender file.' The verb 'list' is explicitly read-only and retrieves scene data without modification.

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

How to control list_scenes

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 list_scenes:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_scenes": {}
  }
}

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

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

Go deeper

Questions about list_scenes

What does the list_scenes tool do? +

List all scenes in the current Blender file. It is categorised as a Read tool in the Blender MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_scenes? +

Register the Blender MCP server in PolicyLayer and add a rule for list_scenes: 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.

What risk level is list_scenes? +

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

Can I rate-limit list_scenes? +

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

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

list_scenes 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.

Enforce policy on every Blender tool call.

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

Free to start. No card required.

77 Blender tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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