iterate_design · Kiln MCP: Risk & Policy

WHAT IT DOES

What iterate_design does on Kiln

AI agents invoke iterate_design 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 iterate_design needs a policy

Based on the server context (AI agent control of 3D printers, sibling tools include analyze_design_requirements and analyze_generation_feedback), 'iterate_design' likely executes a design iteration workflow, potentially modifying 3D models or triggering print jobs.

From the tool's definition Tool name 'iterate_design' on a 3D printer control server with 273 tools including design analysis and generation tools. Description is empty.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

iterate_design Rate-limited

iterate_design 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": {
    "iterate_design": {
      "limits": [
        {
          "counter": "iterate_design_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 iterate_design

What does the iterate_design tool do? +

iterate_design. 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 iterate_design? +

Register the Kiln MCP server in PolicyLayer and add a rule for iterate_design: 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 iterate_design? +

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

Can I rate-limit iterate_design? +

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

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

iterate_design 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.