system_ntp_server_delete
Delete an NTP server by its ID. Use system_ntp_servers first to find the ID.
This record as markdown: /tools/spranab-truenas-mcp/system-ntp-server-delete.md
What system_ntp_server_delete does on Truenas
AI agents call system_ntp_server_delete to permanently remove resources in Truenas, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why system_ntp_server_delete is rated Critical
This tool irreversibly deletes NTP server configuration entries from the system. While not as critical as data deletion, removing NTP server settings cannot be undone and could disrupt system time synchronization, affecting dependent services and monitoring. This meets the Destructive category criteria as it performs an action that cannot be undone.
From the tool's definition Tool name contains 'delete' and description states 'Delete an NTP server by its ID', indicating irreversible removal of system configuration data.
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
The rule that runs system_ntp_server_delete 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 system_ntp_server_delete, this is the rule to start with:
system_ntp_server_delete is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Truenas, apply this rule, and every system_ntp_server_delete call is checked against it from then on.
Questions about system_ntp_server_delete
Delete an NTP server by its ID. Use system_ntp_servers first to find the ID. It is categorised as a Destructive tool in the Truenas MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Truenas MCP server in PolicyLayer and add a rule for system_ntp_server_delete: 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.
system_ntp_server_delete is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the system_ntp_server_delete 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 system_ntp_server_delete. 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.
system_ntp_server_delete 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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