blender_create_object · Polybridge MCP: Risk & Policy

WHAT IT DOES

What blender_create_object does on Polybridge MCP

AI agents use blender_create_object to create or update resources in Polybridge MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Polybridge MCP environment.

WHY IT NEEDS A POLICY

Why blender_create_object needs a policy

Creating a 3D object is a reversible write operation. The object can be deleted, modified, or undone within Blender. It does not execute arbitrary code (unlike blender_execute_script), does not delete data irreversibly (unlike fs_delete_file), and does not trigger financial transactions.

From the tool's definition Tool name and description indicate 'Create a new 3D object in the current Blender scene' — this creates new data in a Blender project that can be modified or deleted later.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

blender_create_object Rate-limited

blender_create_object stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "blender_create_object": {
      "limits": [
        {
          "counter": "blender_create_object_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Polybridge MCP, so you can run agents against it safely.

FAQ

Questions about blender_create_object

What does the blender_create_object tool do? +

Create a new 3D object in the current Blender scene. It is categorised as a Write tool in the Polybridge MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on blender_create_object? +

Register the Polybridge MCP server in PolicyLayer and add a rule for blender_create_object: 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 Polybridge MCP. Nothing to install.

What risk level is blender_create_object? +

blender_create_object is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit blender_create_object? +

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

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

blender_create_object is provided by the Polybridge MCP server (madjeek-web/polybridge-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.