add_mesh_fillet · Kiln MCP: Risk & Policy

WHAT IT DOES

What add_mesh_fillet does on Kiln

AI agents use add_mesh_fillet 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 add_mesh_fillet needs a policy

A fillet operation modifies 3D mesh geometry by adding rounded edges, which is a reversible modification (Write category). However, the description is empty, lowering confidence. Severity is medium given potential to alter model geometry in ways that may affect print quality or require manual correction, but the operation is generally non-destructive and reversible within modeling workflows.

From the tool's definition Tool name 'add_mesh_fillet' — no description provided. Based on name alone: 'add' suggests creation/modification, 'mesh_fillet' suggests applying a fillet (rounded edge) operation to a 3D mesh geometry.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_mesh_fillet Rate-limited

add_mesh_fillet 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": {
    "add_mesh_fillet": {
      "limits": [
        {
          "counter": "add_mesh_fillet_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 add_mesh_fillet

What does the add_mesh_fillet tool do? +

add_mesh_fillet. 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 add_mesh_fillet? +

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

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

Can I rate-limit add_mesh_fillet? +

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

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

add_mesh_fillet 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.