vna_configure_sweep · Copper Mountain Vna MCP: Risk & Policy

WHAT IT DOES

What vna_configure_sweep does on Copper Mountain Vna

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

WHY IT NEEDS A POLICY

Why vna_configure_sweep needs a policy

This tool modifies the configuration of a VNA instrument (frequency range, measurement points, IF bandwidth, and power settings). It is a Write operation — it changes device state reversibly (settings can be reconfigured). Misuse could cause incorrect measurements or equipment operation outside safe parameters, but it does not irreversibly destroy data or trigger financial transactions.

From the tool's definition Configure sweep parameters: frequency range, points, IF BW, power

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vna_configure_sweep Rate-limited

vna_configure_sweep 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": {
    "vna_configure_sweep": {
      "limits": [
        {
          "counter": "vna_configure_sweep_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 Copper Mountain Vna, so you can run agents against it safely.

FAQ

Questions about vna_configure_sweep

What does the vna_configure_sweep tool do? +

Configure sweep parameters: frequency range, points, IF BW, power. It is categorised as a Write tool in the Copper Mountain Vna MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on vna_configure_sweep? +

Register the Copper Mountain Vna MCP server in PolicyLayer and add a rule for vna_configure_sweep: 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 Copper Mountain Vna. Nothing to install.

What risk level is vna_configure_sweep? +

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

Can I rate-limit vna_configure_sweep? +

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

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

vna_configure_sweep is provided by the Copper Mountain Vna MCP server (rfingadam/copper-mountain-vna-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.