Low Risk

get_vm_console_ticket

Get console WebSocket ticket for a VM. Args: vm_id: ID of the VM Returns: Console ticket information

How to control get_vm_console_ticket ↓

AI agents call get_vm_console_ticket to retrieve information from Ludus FastMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

This tool retrieves a WebSocket console ticket for a VM, which is fundamentally a read/fetch operation. However, the ticket itself grants interactive console access to a VM, meaning misuse could enable an agent to subsequently interact with or control the VM through the console.

From the tool's definition Get console WebSocket ticket for a VM

Documented attack patterns abuse exactly the kind of access get_vm_console_ticket gives an agent:

PolicyLayer is an MCP gateway — it sits between your AI agents and Ludus FastMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_vm_console_ticket:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_vm_console_ticket": {}
  }
}

get_vm_console_ticket is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Ludus FastMCP — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Go deeper

What does the get_vm_console_ticket tool do? +

Get console WebSocket ticket for a VM. Args: vm_id: ID of the VM Returns: Console ticket information. It is categorised as a Read tool in the Ludus FastMCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_vm_console_ticket? +

Register the Ludus Fast MCP server in PolicyLayer and add a rule for get_vm_console_ticket: 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 get_vm_console_ticket? +

get_vm_console_ticket is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_vm_console_ticket? +

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

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

get_vm_console_ticket 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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201 Ludus FastMCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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