slice_model · Kiln MCP: Risk & Policy

WHAT IT DOES

What slice_model does on Kiln

AI agents invoke slice_model to trigger actions in Kiln. 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 slice_model needs a policy

Slicing a model involves running a computational process (slicer engine) that converts a 3D model into printer instructions (G-code). This is an execution operation that triggers external processing. The description is empty, lowering confidence, but the name strongly implies running a slicing operation.

From the tool's definition Tool name 'slice_model' on a 3D printer control server with 273 tools for OctoPrint, Moonraker, Bambu, Prusa, Elegoo

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

slice_model Rate-limited

slice_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": {
    "slice_model": {
      "limits": [
        {
          "counter": "slice_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 Kiln, so you can run agents against it safely.

FAQ

Questions about slice_model

What does the slice_model tool do? +

slice_model. It is categorised as a Execute tool in the Kiln MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on slice_model? +

Register the Kiln MCP server in PolicyLayer and add a rule for slice_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 Kiln. Nothing to install.

What risk level is slice_model? +

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

Can I rate-limit slice_model? +

Yes. Add a rate_limit block to the slice_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 slice_model completely? +

Set action: deny in the PolicyLayer policy for slice_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 slice_model? +

slice_model is provided by the Kiln MCP server (codeofaxel/Kiln). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.