Critical-risk tools in Notebooklm

Critical severity Notebooklm MCP Server 4 of 19 tools

4 of the 19 tools in Notebooklm are classified as critical risk. This page profiles those tools specifically, with recommended policy actions and the attack patterns that target them.

Every operation listed below is an action PolicyLayer recommends controlling at the transport layer. Open any tool to see the full profile, risk score, and YAML policy snippet.

Tools at critical risk

cleanup_data Destructive

Two-phase deep cleanup of all server data on disk (auth state,
close_session Destructive

Permanently close a session and discard its browser tab. Use the
remove_notebook Destructive

Remove a notebook from the local library. **Does NOT delete the
reset_session Destructive

Clear a session

Attacks that target this class

Critical-risk tools in any server share these documented attack patterns. Each links to the full case and the defensive policy.

Destructive Action Autonomy
Privilege escalation via admin-only tools
Data exfiltration via tool chaining
Runaway Tool Loops

Critical-risk tools in Notebooklm

Tools at critical risk

Attacks that target this class

More on Notebooklm

Enforce policy on every Notebooklm tool call.