print_model · OpenSCAD MCP Server MCP: Risk & Policy

WHAT IT DOES

What print_model does on OpenSCAD MCP Server

AI agents invoke print_model to trigger actions in OpenSCAD MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why print_model needs a policy

This tool triggers a physical real-world operation — sending a print job to a connected 3D printer. It executes an external physical process that consumes materials, time, and energy. Misuse (e.g., printing the wrong model, repeated prints) could waste expensive filament/resin and tie up hardware.

From the tool's definition Print a 3D model on a connected printer

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

print_model Rate-limited

print_model stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "print_model": {
      "limits": [
        {
          "counter": "print_model_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about print_model

What does the print_model tool do? +

Print a 3D model on a connected printer. It is categorised as a Execute tool in the OpenSCAD MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on print_model? +

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

What risk level is print_model? +

print_model is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit print_model? +

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

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

print_model is provided by the OpenSCAD MCP Server MCP server (jhacksman/openscad-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

print_model is one line of OpenSCAD MCP Server's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →