layer_freeze

Freeze a layer (makes it invisible and unselectable, faster regeneration).

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/layer-freeze.md

WHAT IT DOES

What layer_freeze does on AutoCAD MCP Pro

AI agents use layer_freeze 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 layer_freeze is rated Medium

Freezing a layer modifies drawing properties but is reversible—the layer can be unfrozen to restore its prior state. This makes it Write rather than Destructive. The severity is medium because misuse by an AI agent could hide critical design elements or layers, potentially causing confusion or design errors, but the change can be undone.

From the tool's definition Tool name 'layer_freeze' and description 'Freeze a layer (makes it invisible and unselectable, faster regeneration)' indicate modification of layer properties.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

layer_freeze Rate-limited

layer_freeze 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": {
    "layer_freeze": {
      "limits": [
        {
          "counter": "layer_freeze_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 layer_freeze call is checked against it from then on.

FAQ

Questions about layer_freeze

What does the layer_freeze tool do? +

Freeze a layer (makes it invisible and unselectable, faster regeneration). 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 layer_freeze? +

Register the AutoCAD MCP Pro MCP server in PolicyLayer and add a rule for layer_freeze: 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 layer_freeze? +

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

Can I rate-limit layer_freeze? +

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

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

layer_freeze 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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