Rollback dataset to snapshot. Requires confirm=True. WARNING: destroys newer data.
AI agents call rollback_snapshot to permanently remove resources in Truenas Ws — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Rolling back to a snapshot permanently destroys all data created after that snapshot point. This is irreversible data destruction with potentially massive blast radius across an entire dataset or pool.
From the tool's definition 'Rollback dataset to snapshot' and 'WARNING: destroys newer data' — explicitly irreversibly overwrites current dataset state, destroying all data written after the snapshot
Attacks that exploit this kind of access
Rollback dataset to snapshot. Requires confirm=True. WARNING: destroys newer data. It is categorised as a Destructive tool in the Truenas Ws MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Truenas Ws MCP server in PolicyLayer and add a rule for rollback_snapshot: 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 Ws. Nothing to install.
rollback_snapshot 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 rollback_snapshot 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 rollback_snapshot. 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.
rollback_snapshot is provided by the Truenas Ws MCP server (thoriphes/truenas-ws-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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