system_advanced_config
Get advanced system configuration including console settings, serial port config, syslog, debug kernel, MOTD, and other low-level settings.
This record as markdown: /tools/spranab-truenas-mcp/system-advanced-config.md
What system_advanced_config does on Truenas
AI agents call system_advanced_config 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 system_advanced_config is rated Low
This tool retrieves system configuration data without modifying, executing, deleting, or moving money. The verb 'Get' clearly indicates a read-only operation. While system configuration data could theoretically be sensitive, the tool itself cannot cause side effects or harm through its own execution. Severity is low because unauthorized access to this information alone does not enable destructive actions.
From the tool's definition Tool description states 'Get advanced system configuration' - a retrieval operation with no modification capability.
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
The rule that runs system_advanced_config 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_advanced_config, this is the rule to start with:
system_advanced_config 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 system_advanced_config call is checked against it from then on.
Questions about system_advanced_config
Get advanced system configuration including console settings, serial port config, syslog, debug kernel, MOTD, and other low-level settings. 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 system_advanced_config: 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_advanced_config 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 system_advanced_config 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_advanced_config. 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_advanced_config 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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