vna_calibration_measure_standard · Copper Mountain Vna MCP

WHAT IT DOES

What vna_calibration_measure_standard does on Copper Mountain Vna

AI agents invoke vna_calibration_measure_standard to trigger actions in Copper Mountain Vna. 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 vna_calibration_measure_standard needs a policy

This tool triggers an active measurement operation on physical VNA hardware — it instructs the instrument to perform a calibration standard measurement sweep. This is an external operation that depends on arguments (which standard to measure) and has real-world side effects on the instrument's calibration state.

From the tool's definition Measure calibration standard (OPEN/SHORT/LOAD/THRU)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vna_calibration_measure_standard Rate-limited

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

FAQ

Questions about vna_calibration_measure_standard

What does the vna_calibration_measure_standard tool do? +

Measure calibration standard (OPEN/SHORT/LOAD/THRU). It is categorised as a Execute tool in the Copper Mountain Vna MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on vna_calibration_measure_standard? +

Register the Copper Mountain Vna MCP server in PolicyLayer and add a rule for vna_calibration_measure_standard: 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_calibration_measure_standard? +

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

Can I rate-limit vna_calibration_measure_standard? +

Yes. Add a rate_limit block to the vna_calibration_measure_standard 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_calibration_measure_standard completely? +

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

vna_calibration_measure_standard 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.