group_create

Create a new group on the TrueNAS system.

SERVERTruenas SOURCEspranab/truenas-mcp

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/spranab-truenas-mcp/group-create.md

WHAT IT DOES

What group_create does on Truenas

AI agents use group_create to create or update resources in Truenas, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Truenas environment.

RISK

Why group_create is rated Medium

Creating a group modifies system configuration by adding a new identity/security principal. This is a reversible Write operation (groups can be deleted), not Destructive. Severity is medium because incorrect group creation could affect system access controls and security policies, but the operation is not inherently destructive or financial.

From the tool's definition Tool name 'group_create' and description 'Create a new group on the TrueNAS system' indicate creation of a new system group, a reversible write operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs group_create safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Truenas, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For group_create, this is the rule to start with:

group_create Rate-limited

group_create 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": {
    "group_create": {
      "limits": [
        {
          "counter": "group_create_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 Truenas, apply this rule, and every group_create call is checked against it from then on.

FAQ

Questions about group_create

What does the group_create tool do? +

Create a new group on the TrueNAS system. It is categorised as a Write tool in the Truenas MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on group_create? +

Register the Truenas MCP server in PolicyLayer and add a rule for group_create: 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 Truenas. Nothing to install.

What risk level is group_create? +

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

Can I rate-limit group_create? +

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

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

group_create is provided by the Truenas MCP server (spranab/truenas-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Truenas, and thousands of servers like it.

This server

All 279 Truenas tools →

Across the catalogue

create_task on 0rca Dojo MCP Server →create-task on Kanban MCP Server →create_package_backup on Android Forensics ADB MCP Server →create_project on Stitch MCP Server → The MCP Attack Database →

Guides

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