rollback_snapshot

A destructive tool on the Ludus Fast MCP server.

SERVERLudus FastMCP SOURCEtjnull/ludus-fastmcp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/tjnull-ludus-fastmcp/rollback-snapshot.md

WHAT IT DOES

What rollback_snapshot does on Ludus FastMCP

AI agents call rollback_snapshot to permanently remove resources in Ludus FastMCP, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why rollback_snapshot is rated Critical

Rolling back to a snapshot is a destructive operation because it discards all changes made since the snapshot was taken, permanently overwriting the current state. This cannot be undone once executed. The empty description lowers confidence slightly, but the name and context (Proxmox VM/container management) strongly indicate this behavior.

From the tool's definition Tool name 'rollback_snapshot' implies reverting a VM/container to a previous snapshot state, which irreversibly overwrites the current state of the guest.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs rollback_snapshot 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 rollback_snapshot, this is the rule to start with:

rollback_snapshot Hidden

rollback_snapshot is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "rollback_snapshot"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about rollback_snapshot

What does the rollback_snapshot tool do? +

rollback_snapshot is a destructive tool on the Ludus Fast MCP server. It is categorised as a Destructive tool in the Ludus FastMCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on rollback_snapshot? +

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

rollback_snapshot is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit rollback_snapshot? +

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

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

rollback_snapshot 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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