boolean_mesh_op · Kiln MCP: Risk & Policy

WHAT IT DOES

What boolean_mesh_op does on Kiln

AI agents invoke boolean_mesh_op 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 boolean_mesh_op needs a policy

Boolean mesh operations (union, subtract, intersect) are computational operations that modify 3D mesh geometry. Given the context of a 3D printer control server and sibling tools like 'add_mesh_chamfer' and 'add_mesh_fillet', this tool likely executes a destructive geometric transformation on a mesh object.

From the tool's definition Tool name 'boolean_mesh_op' suggests a boolean mesh operation (union, difference, intersection) on 3D geometry; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

boolean_mesh_op Rate-limited

boolean_mesh_op 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": {
    "boolean_mesh_op": {
      "limits": [
        {
          "counter": "boolean_mesh_op_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 boolean_mesh_op

What does the boolean_mesh_op tool do? +

boolean_mesh_op. 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 boolean_mesh_op? +

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

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

Can I rate-limit boolean_mesh_op? +

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

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

boolean_mesh_op 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.