draw_rectangle · Inventor MCP: Risk & Policy

WHAT IT DOES

What draw_rectangle does on Inventor

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

WHY IT NEEDS A POLICY

Why draw_rectangle needs a policy

This tool creates new geometric elements within a sketch, which is a reversible modification operation. It doesn't delete data (Destructive), execute arbitrary code (Execute), or perform financial operations (Financial). While it modifies design state, the changes can be undone through standard CAD operations.

From the tool's definition Tool name 'draw_rectangle' and description 'Draw a centered rectangle in a sketch' indicates creation/modification of sketch geometry in Autodesk Inventor. This modifies the parametric model but reversibly—rectangles can be deleted or modified.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

draw_rectangle Rate-limited

draw_rectangle 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": {
    "draw_rectangle": {
      "limits": [
        {
          "counter": "draw_rectangle_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 Inventor, so you can run agents against it safely.

FAQ

Questions about draw_rectangle

What does the draw_rectangle tool do? +

Draw a centered rectangle in a sketch. Dimensions in mm. It is categorised as a Write tool in the Inventor MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on draw_rectangle? +

Register the Inventor MCP server in PolicyLayer and add a rule for draw_rectangle: 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 Inventor. Nothing to install.

What risk level is draw_rectangle? +

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

Can I rate-limit draw_rectangle? +

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

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

draw_rectangle is provided by the Inventor MCP server (neonglay/inventor-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.