notebook_edit · MCP Claude Code MCP: Risk & Policy

WHAT IT DOES

What notebook_edit does on MCP Claude Code

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

WHY IT NEEDS A POLICY

Why notebook_edit needs a policy

The tool appears to edit notebook files based on its name and the server's stated capability to 'modify files.' This is a Write operation—it creates or modifies data reversibly. While the description is empty, the naming convention and server context provide strong evidence.

From the tool's definition Tool name 'notebook_edit' combined with context that this MCP server 'allow[s] the AI to analyze codebases, modify files, execute commands, and manage projects through direct file system interactions.' The 'notebook_edit' name strongly implies modifying…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

notebook_edit Rate-limited

notebook_edit 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_edit": {
      "limits": [
        {
          "counter": "notebook_edit_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 MCP Claude Code, so you can run agents against it safely.

FAQ

Questions about notebook_edit

What does the notebook_edit tool do? +

notebook_edit. It is categorised as a Write tool in the MCP Claude Code 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_edit? +

Register the MCP Claude Code MCP server in PolicyLayer and add a rule for notebook_edit: 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 MCP Claude Code. Nothing to install.

What risk level is notebook_edit? +

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

Can I rate-limit notebook_edit? +

Yes. Add a rate_limit block to the notebook_edit 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_edit completely? +

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

notebook_edit is provided by the MCP Claude Code MCP server (sdglbl/mcp-claude-code). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.