Critical Risk →

delete_group

Delete a group. Args: group_name: Name of the group to delete Returns: Deletion result

How to control delete_group ↓

AI agents call delete_group 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.

Critical Risk

Deleting a group is a destructive operation that removes user groupings and associated configurations permanently. In a cyber range management context, this affects access controls and resource assignments that cannot be easily recovered without manual intervention or backups. This is irreversible data removal, placing it in the Destructive category rather than Write.

From the tool's definition delete_group with description 'Delete a group' - the verb 'delete' and the lack of any qualifier like 'archive' or 'soft-delete' indicate irreversible removal of data.

Documented attack patterns abuse exactly the kind of access delete_group 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 delete_group:

policy.json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_group"
  ]
}

delete_group disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

  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.
RESTRICT THIS TOOL →

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Go deeper

What does the delete_group tool do? +

Delete a group. Args: group_name: Name of the group to delete Returns: Deletion result. 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 delete_group? +

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

delete_group 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 delete_group? +

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

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

delete_group 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.

Enforce policy on every Ludus FastMCP tool call.

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.

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