vna_launch · Copper Mountain Vna MCP: Risk & Policy

WHAT IT DOES

What vna_launch does on Copper Mountain Vna

AI agents invoke vna_launch 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_launch needs a policy

This tool launches an external application (VNA software) and enables a socket server, which is an Execute-category action. The socket server enablement creates network accessibility to the VNA device, potentially exposing it to remote operations. While not destructive by itself, launching software with network services enabled represents a significant operational impact and could enable subsequent harmful actions.

From the tool's definition Tool name 'vna_launch' and description 'Launch VNA software with socket server enabled' indicates execution of a software process with network exposure.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vna_launch Rate-limited

vna_launch 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_launch": {
      "limits": [
        {
          "counter": "vna_launch_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_launch

What does the vna_launch tool do? +

Launch VNA software with socket server enabled (Windows only). 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_launch? +

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

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

Can I rate-limit vna_launch? +

Yes. Add a rate_limit block to the vna_launch 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_launch completely? +

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

vna_launch 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.