nec2_create_yagi · Mcp Nec2 Antenna MCP: Risk & Policy

WHAT IT DOES

What nec2_create_yagi does on Mcp Nec2 Antenna

AI agents use nec2_create_yagi to create or update resources in Mcp Nec2 Antenna — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Nec2 Antenna environment.

WHY IT NEEDS A POLICY

Why nec2_create_yagi needs a policy

This tool creates a new antenna design model in the NEC2 simulation system. Creation of simulation objects is a Write operation—the antenna design can be modified or deleted later, and the action has no destructive, financial, or code-execution consequences.

From the tool's definition Tool name 'nec2_create_yagi' with description 'Create a Yagi-Uda directional antenna' indicates data creation action.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

nec2_create_yagi Rate-limited

nec2_create_yagi 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": {
    "nec2_create_yagi": {
      "limits": [
        {
          "counter": "nec2_create_yagi_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 Mcp Nec2 Antenna, so you can run agents against it safely.

FAQ

Questions about nec2_create_yagi

What does the nec2_create_yagi tool do? +

Create a Yagi-Uda directional antenna with specified number of directors. It is categorised as a Write tool in the Mcp Nec2 Antenna MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on nec2_create_yagi? +

Register the Mcp Nec2 Antenna MCP server in PolicyLayer and add a rule for nec2_create_yagi: 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 Mcp Nec2 Antenna. Nothing to install.

What risk level is nec2_create_yagi? +

nec2_create_yagi is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit nec2_create_yagi? +

Yes. Add a rate_limit block to the nec2_create_yagi 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 nec2_create_yagi completely? +

Set action: deny in the PolicyLayer policy for nec2_create_yagi. 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 nec2_create_yagi? +

nec2_create_yagi is provided by the Mcp Nec2 Antenna MCP server (rfingadam/mcp-nec2-antenna). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.