viewport_create

A write tool on the AutoCAD MCP Pro MCP server.

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/viewport-create.md

WHAT IT DOES

What viewport_create does on AutoCAD MCP Pro

AI agents use viewport_create 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 viewport_create is rated Medium

Viewport creation in AutoCAD adds a new view object to a drawing, modifying the document structure reversibly. This is a Write operation (creates/modifies data) rather than Read (no analysis/query), Execute (no external command execution), or Destructive (viewport can be deleted/undone).

From the tool's definition Tool name 'viewport_create' and server context showing 'drawing creation' and 'entity modification' capabilities. Creates a new viewport object in AutoCAD drawings, which is a reversible data modification operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

viewport_create Rate-limited

viewport_create 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": {
    "viewport_create": {
      "limits": [
        {
          "counter": "viewport_create_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 viewport_create call is checked against it from then on.

FAQ

Questions about viewport_create

What does the viewport_create tool do? +

viewport_create is a write tool on the AutoCAD MCP Pro MCP server. 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 viewport_create? +

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

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

Can I rate-limit viewport_create? +

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

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

viewport_create 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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