import_cad_file

A write tool on the Blender MCP server.

SERVERBlender SOURCEsandraschi/blender-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/sandraschi-blender-mcp/import-cad-file.md

WHAT IT DOES

What import_cad_file does on Blender

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

RISK

Why import_cad_file is rated Medium

Importing a CAD file is a Write operation—it loads external data and adds it to the Blender project, modifying the scene state reversibly. This is not Read (no mere retrieval), not Execute (no arbitrary code or external command execution), not Destructive (no data loss), and not Financial.

From the tool's definition Tool name 'import_cad_file' indicates importing external CAD file data into Blender, which creates/adds new geometric data to the 3D scene.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs import_cad_file safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Blender, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For import_cad_file, this is the rule to start with:

import_cad_file Rate-limited

import_cad_file 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": {
    "import_cad_file": {
      "limits": [
        {
          "counter": "import_cad_file_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Blender, apply this rule, and every import_cad_file call is checked against it from then on.

FAQ

Questions about import_cad_file

What does the import_cad_file tool do? +

import_cad_file is a write tool on the Blender MCP server. It is categorised as a Write tool in the Blender MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on import_cad_file? +

Register the Blender MCP server in PolicyLayer and add a rule for import_cad_file: 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 import_cad_file? +

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

Can I rate-limit import_cad_file? +

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

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

import_cad_file 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.

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