mirror_mesh_model · Kiln MCP: Risk & Policy

WHAT IT DOES

What mirror_mesh_model does on Kiln

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

WHY IT NEEDS A POLICY

Why mirror_mesh_model needs a policy

Mirroring a mesh model is a reversible modification of 3D geometry data. It falls under Write as it transforms/modifies a model without irreversibly destroying it. The empty description reduces confidence in this classification.

From the tool's definition Tool name 'mirror_mesh_model' suggests a geometric transformation (mirroring) of a 3D mesh model, which modifies data reversibly. Description is empty, lowering confidence.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mirror_mesh_model Rate-limited

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

FAQ

Questions about mirror_mesh_model

What does the mirror_mesh_model tool do? +

mirror_mesh_model. It is categorised as a Write tool in the Kiln MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mirror_mesh_model? +

Register the Kiln MCP server in PolicyLayer and add a rule for mirror_mesh_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 mirror_mesh_model? +

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

Can I rate-limit mirror_mesh_model? +

Yes. Add a rate_limit block to the mirror_mesh_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 mirror_mesh_model completely? +

Set action: deny in the PolicyLayer policy for mirror_mesh_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 mirror_mesh_model? +

mirror_mesh_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.