ipynb_reorder_cells · Jupyter Editor MCP: Risk & Policy

WHAT IT DOES

What ipynb_reorder_cells does on Jupyter Editor

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

WHY IT NEEDS A POLICY

Why ipynb_reorder_cells needs a policy

Reordering cells modifies the structure of a notebook reversibly (cells are rearranged but not deleted), placing it in the Write category. Severity is medium as misordering cells could affect notebook logic, but the operation is reversible. Confidence is low due to empty description.

From the tool's definition Tool name 'ipynb_reorder_cells' suggests reordering cells within a Jupyter notebook. Description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ipynb_reorder_cells Rate-limited

ipynb_reorder_cells 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": {
    "ipynb_reorder_cells": {
      "limits": [
        {
          "counter": "ipynb_reorder_cells_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about ipynb_reorder_cells

What does the ipynb_reorder_cells tool do? +

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

How do I enforce a policy on ipynb_reorder_cells? +

Register the Jupyter Editor MCP server in PolicyLayer and add a rule for ipynb_reorder_cells: 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 Jupyter Editor. Nothing to install.

What risk level is ipynb_reorder_cells? +

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

Can I rate-limit ipynb_reorder_cells? +

Yes. Add a rate_limit block to the ipynb_reorder_cells 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 ipynb_reorder_cells completely? +

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

ipynb_reorder_cells is provided by the Jupyter Editor MCP server (jsamuel1/jupyter-editor-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.