add_ranges_to_group

Add ranges to a group.

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/add-ranges-to-group.md

WHAT IT DOES

What add_ranges_to_group does on Ludus FastMCP

AI agents use add_ranges_to_group 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 add_ranges_to_group is rated Medium

The tool modifies data (group composition) but does not irreversibly delete, execute code, trigger financial transactions, or perform destructive operations. It is a standard write operation that creates or updates relationships within the Ludus cyber range management system.

From the tool's definition Tool name explicitly states 'add_ranges_to_group' and description confirms it 'Add ranges to a group' — this creates or modifies group membership by associating ranges with a group.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

add_ranges_to_group Rate-limited

add_ranges_to_group 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": {
    "add_ranges_to_group": {
      "limits": [
        {
          "counter": "add_ranges_to_group_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 add_ranges_to_group call is checked against it from then on.

FAQ

Questions about add_ranges_to_group

What does the add_ranges_to_group tool do? +

Add ranges to a group. 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 add_ranges_to_group? +

Register the Ludus Fast MCP server in PolicyLayer and add a rule for add_ranges_to_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 add_ranges_to_group? +

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

Can I rate-limit add_ranges_to_group? +

Yes. Add a rate_limit block to the add_ranges_to_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 add_ranges_to_group completely? +

Set action: deny in the PolicyLayer policy for add_ranges_to_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 add_ranges_to_group? +

add_ranges_to_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.

KEEP EXPLORING

More on Ludus Fast, and thousands of servers like it.

This server

All 231 Ludus Fast tools →

Across the catalogue

add-tag on Kanban MCP Server →kb_add on Persistent Kb → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →