repair_mesh · Kiln MCP: Risk & Policy

WHAT IT DOES

What repair_mesh does on Kiln

AI agents invoke repair_mesh 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 repair_mesh needs a policy

In the context of 3D printing software, 'repair_mesh' typically refers to analyzing and modifying a 3D mesh to fix errors (e.g., non-manifold edges, holes). This is most likely a Write or Execute operation that processes and potentially modifies mesh geometry. Given the empty description, confidence is low.

From the tool's definition Tool name 'repair_mesh' on a 3D printer control server; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

repair_mesh Rate-limited

repair_mesh 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": {
    "repair_mesh": {
      "limits": [
        {
          "counter": "repair_mesh_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 repair_mesh

What does the repair_mesh tool do? +

repair_mesh. 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 repair_mesh? +

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

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

Can I rate-limit repair_mesh? +

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

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

repair_mesh 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.