entity_create_block_ref

What entity_create_block_ref does on AutoCAD MCP Pro

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

Why entity_create_block_ref is rated Medium

Creating a block reference in AutoCAD adds a new drawable entity to the document, which modifies the design reversibly. This is a Write operation—the change can be undone (undo/delete the reference) and does not destroy existing data. Severity is medium because misuse could pollute a critical design file with unwanted references, but the effect is reversible and localized to the current session unless saved.

From the tool's definition Tool name 'entity_create_block_ref' indicates creation of a block reference entity in AutoCAD. The 'create' verb and context of sibling tools like 'block_create_from_entities' and 'block_explode' confirm it modifies the CAD drawing by adding/inserting a new…

The rule that runs entity_create_block_ref safely

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

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

Questions about entity_create_block_ref