entity_mirror

Mirror an entity across a line defined by two points. Returns the mirrored copy.

SERVERAutoCAD MCP Pro SOURCEu-c4n/autocad-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/u-c4n-autocad-mcp/entity-mirror.md

WHAT IT DOES

What entity_mirror does on AutoCAD MCP Pro

AI agents use entity_mirror 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.

RISK

Why entity_mirror is rated Medium

This tool creates new geometry (the mirrored copy) within the drawing, modifying its contents. This is a Write operation—it produces new data structures that persist in the CAD model but can be undone (deleted) if needed. It is not Destructive because the original entity remains intact and the action is reversible.

From the tool's definition Tool description states it "Mirror an entity across a line" and "Returns the mirrored copy." The action creates a new mirrored duplicate of an entity within the CAD drawing, which is a reversible modification to the drawing state.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs entity_mirror 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_mirror, this is the rule to start with:

entity_mirror Rate-limited

entity_mirror 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": {
    "entity_mirror": {
      "limits": [
        {
          "counter": "entity_mirror_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 AutoCAD MCP Pro, apply this rule, and every entity_mirror call is checked against it from then on.

FAQ

Questions about entity_mirror

What does the entity_mirror tool do? +

Mirror an entity across a line defined by two points. Returns the mirrored copy. It is categorised as a Write tool in the AutoCAD MCP Pro MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on entity_mirror? +

Register the AutoCAD MCP Pro MCP server in PolicyLayer and add a rule for entity_mirror: 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 AutoCAD MCP Pro. Nothing to install.

What risk level is entity_mirror? +

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

Can I rate-limit entity_mirror? +

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

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

entity_mirror is provided by the AutoCAD MCP Pro MCP server (u-c4n/autocad-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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