update_testing_vm

A write tool on the Ludus Fast MCP server.

SERVERLudus FastMCP SOURCEtjnull/ludus-fastmcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/tjnull-ludus-fastmcp/update-testing-vm.md

WHAT IT DOES

What update_testing_vm does on Ludus FastMCP

AI agents use update_testing_vm to create or update resources in Ludus FastMCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ludus FastMCP environment.

RISK

Why update_testing_vm is rated Medium

Updates testing VMs in cyber range; reversible modification affecting range infrastructure.

From the tool's definition uninformative description; update suggests modification of testing VM

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_testing_vm safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ludus FastMCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For update_testing_vm, this is the rule to start with:

update_testing_vm Rate-limited

update_testing_vm 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": {
    "update_testing_vm": {
      "limits": [
        {
          "counter": "update_testing_vm_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ludus FastMCP, apply this rule, and every update_testing_vm call is checked against it from then on.

FAQ

Questions about update_testing_vm

What does the update_testing_vm tool do? +

update_testing_vm is a write tool on the Ludus Fast MCP server. It is categorised as a Write tool in the Ludus FastMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_testing_vm? +

Register the Ludus Fast MCP server in PolicyLayer and add a rule for update_testing_vm: 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 Ludus FastMCP. Nothing to install.

What risk level is update_testing_vm? +

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

Can I rate-limit update_testing_vm? +

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

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

update_testing_vm is provided by the Ludus Fast MCP server (tjnull/ludus-fastmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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