notebook_create · NotebookLM MCP Server MCP: Risk & Policy

WHAT IT DOES

What notebook_create does on NotebookLM MCP Server

AI agents use notebook_create to create or update resources in NotebookLM MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your NotebookLM MCP Server environment.

WHY IT NEEDS A POLICY

Why notebook_create needs a policy

This tool creates a new notebook, which is a reversible write operation. It does not execute arbitrary code, delete data, move money, or perform irreversible actions. The blast radius is limited to creating a new notebook entity in the user's NotebookLM workspace, which can be deleted or modified afterward. Severity is low because notebook creation is a standard, expected operation with minimal risk.

From the tool's definition Tool name 'notebook_create' and description 'Create a new notebook' indicate the tool creates new data structures within NotebookLM.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

notebook_create Rate-limited

notebook_create stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "notebook_create": {
      "limits": [
        {
          "counter": "notebook_create_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches NotebookLM MCP Server, so you can run agents against it safely.

FAQ

Questions about notebook_create

What does the notebook_create tool do? +

Create a new notebook. It is categorised as a Write tool in the NotebookLM MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on notebook_create? +

Register the NotebookLM MCP Server MCP server in PolicyLayer and add a rule for notebook_create: 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 NotebookLM MCP Server. Nothing to install.

What risk level is notebook_create? +

notebook_create is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit notebook_create? +

Yes. Add a rate_limit block to the notebook_create 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.

How do I block notebook_create completely? +

Set action: deny in the PolicyLayer policy for notebook_create. 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 notebook_create? +

notebook_create is provided by the NotebookLM MCP Server MCP server (set2374/notebooklm-mcp-archived). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.