rotate_stl · Bambu Printer MCP: Risk & Policy

WHAT IT DOES

What rotate_stl does on Bambu Printer

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

WHY IT NEEDS A POLICY

Why rotate_stl needs a policy

Rotating an STL file creates or modifies 3D model data in a reversible manner. This is a Write operation rather than Read (which would only query/retrieve data) or Destructive (no permanent deletion). The severity is low because the modification is easily reversible and limited to geometric transformation of a single model file without affecting physical hardware, financial systems, or external operations.

From the tool's definition Tool description states it 'Rotate an STL file by specified angles', which modifies 3D model data. The operation is reversible (can rotate back to original orientation).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rotate_stl Rate-limited

rotate_stl 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": {
    "rotate_stl": {
      "limits": [
        {
          "counter": "rotate_stl_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 Bambu Printer, so you can run agents against it safely.

FAQ

Questions about rotate_stl

What does the rotate_stl tool do? +

Rotate an STL file by specified angles (degrees). It is categorised as a Write tool in the Bambu Printer MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rotate_stl? +

Register the Bambu Printer MCP server in PolicyLayer and add a rule for rotate_stl: 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 Bambu Printer. Nothing to install.

What risk level is rotate_stl? +

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

Can I rate-limit rotate_stl? +

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

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

rotate_stl is provided by the Bambu Printer MCP server (rowbotik/bambu-printer-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.