iscsi_extent_create

Create an iSCSI extent (LUN)

SERVERNasbridge SOURCEmaverick0628/nasbridge

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/nasbridge/iscsi-extent-create.md

WHAT IT DOES

What iscsi_extent_create does on Nasbridge

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

RISK

Why iscsi_extent_create is rated Medium

Creating an iSCSI extent is a write operation that establishes a new storage resource on the TrueNAS system. While reversible (the extent can be deleted), it represents a significant modification to the storage infrastructure that could impact system capacity allocation and connected clients.

From the tool's definition Tool name 'iscsi_extent_create' and description 'Create an iSCSI extent (LUN)' indicate creation of a new iSCSI logical unit number, which is a data storage resource.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs iscsi_extent_create safely

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

iscsi_extent_create Rate-limited

iscsi_extent_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": {
    "iscsi_extent_create": {
      "limits": [
        {
          "counter": "iscsi_extent_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 Nasbridge, apply this rule, and every iscsi_extent_create call is checked against it from then on.

FAQ

Questions about iscsi_extent_create

What does the iscsi_extent_create tool do? +

Create an iSCSI extent (LUN). It is categorised as a Write tool in the Nasbridge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on iscsi_extent_create? +

Register the Nasbridge MCP server in PolicyLayer and add a rule for iscsi_extent_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 Nasbridge. Nothing to install.

What risk level is iscsi_extent_create? +

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

Can I rate-limit iscsi_extent_create? +

Yes. Add a rate_limit block to the iscsi_extent_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 iscsi_extent_create completely? +

Set action: deny in the PolicyLayer policy for iscsi_extent_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 iscsi_extent_create? +

iscsi_extent_create is provided by the Nasbridge MCP server (maverick0628/nasbridge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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