memory_patch_undo

Undo a previous patch by restoring the original bytes.

SERVERJshookmcp SOURCE@jshookmcp/jshook

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-vmoranv-jshookmcp/memory-patch-undo.md

WHAT IT DOES

What memory_patch_undo does on Jshookmcp

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

RISK

Why memory_patch_undo is rated Medium

Restores original bytes in memory, reversibly modifying binary data or memory state.

From the tool's definition Undo a previous patch by restoring the original bytes

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs memory_patch_undo safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Jshookmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For memory_patch_undo, this is the rule to start with:

memory_patch_undo Rate-limited

memory_patch_undo 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": {
    "memory_patch_undo": {
      "limits": [
        {
          "counter": "memory_patch_undo_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Jshookmcp, apply this rule, and every memory_patch_undo call is checked against it from then on.

FAQ

Questions about memory_patch_undo

What does the memory_patch_undo tool do? +

Undo a previous patch by restoring the original bytes. It is categorised as a Write tool in the Jshookmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on memory_patch_undo? +

Register the Jshook MCP server in PolicyLayer and add a rule for memory_patch_undo: 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 Jshookmcp. Nothing to install.

What risk level is memory_patch_undo? +

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

Can I rate-limit memory_patch_undo? +

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

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

memory_patch_undo is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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