add_through_hole · Hardware MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_through_hole does on Hardware MCP Server

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

WHY IT NEEDS A POLICY

Why add_through_hole needs a policy

This tool modifies a CAD design by adding a hole feature—a standard parametric modeling operation. The change is reversible (the CAD model can be reloaded or the hole removed in a subsequent operation), making it Write rather than Destructive.

From the tool's definition Tool name 'add_through_hole' and description 'Add a through hole with diameter' indicate modification of CAD geometry.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_through_hole Rate-limited

add_through_hole 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_through_hole": {
      "limits": [
        {
          "counter": "add_through_hole_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 Hardware MCP Server, so you can run agents against it safely.

FAQ

Questions about add_through_hole

What does the add_through_hole tool do? +

Add a through hole with diameter. It is categorised as a Write tool in the Hardware MCP Server 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_through_hole? +

Register the Hardware MCP Server MCP server in PolicyLayer and add a rule for add_through_hole: 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 Hardware MCP Server. Nothing to install.

What risk level is add_through_hole? +

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

Can I rate-limit add_through_hole? +

Yes. Add a rate_limit block to the add_through_hole 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_through_hole completely? +

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

add_through_hole is provided by the Hardware MCP Server MCP server (thefloatingstring/mcp-for-hardware). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.