Schedule automatic snapshots for VMs. Args: vm_names: List of VM names to snapshot schedule: Cron expression for snapshot schedule retention_count: Number of snapshots to retain user_id: Optional user ID (admin only) Returns: Snapshot scheduling result
AI agents use schedule_snapshots 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.
This tool creates a scheduled configuration for automatic VM snapshots. It writes/modifies scheduling configuration rather than executing or deleting anything. Snapshots themselves are non-destructive (they preserve state), and scheduling is a reversible configuration change. Severity is medium because misconfiguration could affect storage resources or snapshot retention policies across VMs in the cyber range.
From the tool's definition Schedule automatic snapshots for VMs ... Cron expression for snapshot schedule ... Number of snapshots to retain
Risk signalsAdmin/system-level operation
Documented attack patterns abuse exactly the kind of access schedule_snapshots 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 schedule_snapshots:
{
"version": "1",
"default": "deny",
"tools": {
"schedule_snapshots": {
"limits": [
{
"counter": "schedule_snapshots_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}schedule_snapshots 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.
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Schedule automatic snapshots for VMs. Args: vm_names: List of VM names to snapshot schedule: Cron expression for snapshot schedule retention_count: Number of snapshots to retain user_id: Optional user ID (admin only) Returns: Snapshot scheduling result. 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.
Register the Ludus Fast MCP server in PolicyLayer and add a rule for schedule_snapshots: 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.
schedule_snapshots is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the schedule_snapshots 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.
Set action: deny in the PolicyLayer policy for schedule_snapshots. 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.
schedule_snapshots 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.
Deterministic rules across all 201 Ludus FastMCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
201 Ludus FastMCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.