pt_generate_script · MCP Packet Tracer MCP: Risk & Policy

WHAT IT DOES

What pt_generate_script does on MCP Packet Tracer

AI agents invoke pt_generate_script to trigger actions in MCP Packet Tracer. 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 pt_generate_script needs a policy

This tool generates executable JavaScript code targeting the PTBuilder API in Cisco Packet Tracer. Generated scripts can programmatically control network topologies, configure devices, and potentially trigger destructive or disruptive changes. Since the primary action is generating/producing executable code (and likely executing or staging it for execution), Execute is the most appropriate category.

From the tool's definition Genera el script JavaScript de PTBuilder — generates a JavaScript script for PTBuilder execution

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pt_generate_script Rate-limited

pt_generate_script 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": {
    "pt_generate_script": {
      "limits": [
        {
          "counter": "pt_generate_script_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 MCP Packet Tracer, so you can run agents against it safely.

FAQ

Questions about pt_generate_script

What does the pt_generate_script tool do? +

Genera el script JavaScript de PTBuilder. It is categorised as a Execute tool in the MCP Packet Tracer MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on pt_generate_script? +

Register the MCP Packet Tracer MCP server in PolicyLayer and add a rule for pt_generate_script: 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 Packet Tracer. Nothing to install.

What risk level is pt_generate_script? +

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

Can I rate-limit pt_generate_script? +

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

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

pt_generate_script is provided by the MCP Packet Tracer MCP server (mainorcruz/mcp_packet_tracer). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.