Critical Risk →

sync_library

Sync your local library with actual NotebookLM notebooks. ## What This Tool Does - Navigates to NotebookLM and extracts all your notebooks - Compares with local library entries - Detects stale entries (notebooks deleted or URLs changed) - Identifies notebooks not in your library - Optionally aut...

Part of the Notebooklm MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

@pan-sec/notebooklm-mcp Destructive Risk 4/5

AI agents may call sync_library to permanently remove or destroy resources in Notebooklm. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. Intercept blocks destructive tools by default and requires explicit human approval before enabling them.

Without a policy, an AI agent could call sync_library in a loop, permanently destroying resources in Notebooklm. There is no undo for destructive operations. Intercept blocks this tool by default and only allows it when a human explicitly approves the action.

Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.

io-github-pantheon-security-notebooklm-mcp-secure.yaml
tools:
  sync_library:
    rules:
      - action: deny
        reason: "Blocked by default — enable with approval"

See the full Notebooklm policy for all 31 tools.

Tool Name sync_library
Category Destructive
Risk Level Critical

View all 31 tools →

Agents calling destructive-class tools like sync_library have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

Other tools in the Destructive risk category across the catalogue. The same policy patterns (deny, require_approval) apply to each.

sync_library is one of the critical-risk operations in Notebooklm. For the full severity-focused view — only the critical-risk tools with their recommended policies — see the breakdown for this server, or browse all critical-risk tools across every MCP server.

What does the sync_library tool do? +

Sync your local library with actual NotebookLM notebooks. ## What This Tool Does - Navigates to NotebookLM and extracts all your notebooks - Compares with local library entries - Detects stale entries (notebooks deleted or URLs changed) - Identifies notebooks not in your library - Optionally auto-removes stale entries ## When To Use - Library seems out of sync with NotebookLM - After deleting notebooks in NotebookLM - To discover new notebooks to add - Before setting up automation workflows ## Output Returns a sync report with: - **matched**: Library entries that match actual notebooks - **staleEntries**: Library entries with no matching notebook (candidates for removal) - **missingNotebooks**: NotebookLM notebooks not in library (candidates for adding) - **suggestions**: Recommended actions ## Example Usage ```json { "auto_fix": false } ``` With auto-fix to remove stale entries: ```json { "auto_fix": true } ```. It is categorised as a Destructive tool in the Notebooklm MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on sync_library? +

Add a rule in your Intercept YAML policy under the tools section for sync_library. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Notebooklm MCP server.

What risk level is sync_library? +

sync_library is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit sync_library? +

Yes. Add a rate_limit block to the sync_library rule in your Intercept 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.

How do I block sync_library completely? +

Set action: deny in the Intercept policy for sync_library. 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.

What MCP server provides sync_library? +

sync_library is provided by the Notebooklm MCP server (@pan-sec/notebooklm-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policies on Notebooklm

Open source. One binary. Zero dependencies.

npx -y @policylayer/intercept
github.com/policylayer/intercept →
// GET IN TOUCH

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