add_dimension · AutoCAD MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_dimension does on AutoCAD MCP Server

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

WHY IT NEEDS A POLICY

Why add_dimension needs a policy

This tool creates a new dimension annotation object in the CAD document, modifying the drawing by adding metadata/annotations. This is a reversible Write operation—dimensions can be deleted or modified. It does not execute arbitrary code, delete data irreversibly, or move money. The severity is medium because misuse could clutter or corrupt a design document, but the changes are undoable via undo/deletion.

From the tool's definition Tool name 'add_dimension' and description 'Add a linear dimension annotation in AutoCAD' indicate creation of new annotation objects within a CAD drawing.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_dimension Rate-limited

add_dimension 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": {
    "add_dimension": {
      "limits": [
        {
          "counter": "add_dimension_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches AutoCAD MCP Server, so you can run agents against it safely.

FAQ

Questions about add_dimension

What does the add_dimension tool do? +

Add a linear dimension annotation in AutoCAD. It is categorised as a Write tool in the AutoCAD MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_dimension? +

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

What risk level is add_dimension? +

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

Can I rate-limit add_dimension? +

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

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

add_dimension is provided by the AutoCAD MCP Server MCP server (porta048/autocad-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.