This record as markdown: /tools/spranab-truenas-mcp/iscsi-portal-list.md
What iscsi_portal_list does on Truenas
AI agents call iscsi_portal_list to retrieve information from Truenas without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why iscsi_portal_list is rated Low
This tool retrieves and displays information about existing iSCSI portals without creating, modifying, deleting, or executing any operations. It is a pure read operation on system configuration data, presenting minimal risk even if misused by an AI agent, as it only exposes information about portal configuration.
From the tool's definition Tool name 'iscsi_portal_list' and description 'List all iSCSI portals' indicate a query/retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
The rule that runs iscsi_portal_list 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 iscsi_portal_list, this is the rule to start with:
iscsi_portal_list is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Truenas, apply this rule, and every iscsi_portal_list call is checked against it from then on.
Questions about iscsi_portal_list
List all iSCSI portals. It is categorised as a Read tool in the Truenas MCP Server, which means it retrieves data without modifying state.
Register the Truenas MCP server in PolicyLayer and add a rule for iscsi_portal_list: 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.
iscsi_portal_list is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the iscsi_portal_list 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 iscsi_portal_list. 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.
iscsi_portal_list 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.
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