undoChanges · AEM MCP Server MCP: Risk & Policy

WHAT IT DOES

What undoChanges does on AEM MCP Server

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

WHY IT NEEDS A POLICY

Why undoChanges needs a policy

Undoing changes is a reversible modification operation — it restores previous state of component data. This is a Write operation (modifying content by reverting it). While 'undo' implies reversal, the action itself writes/modifies the component state and is generally reversible. Severity is medium because misuse could inadvertently revert intentional edits across components.

From the tool's definition Undo the last component changes

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

undoChanges Rate-limited

undoChanges 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": {
    "undoChanges": {
      "limits": [
        {
          "counter": "undochanges_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 AEM MCP Server, so you can run agents against it safely.

FAQ

Questions about undoChanges

What does the undoChanges tool do? +

Undo the last component changes. It is categorised as a Write tool in the AEM 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 undoChanges? +

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

What risk level is undoChanges? +

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

Can I rate-limit undoChanges? +

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

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

undoChanges is provided by the AEM MCP Server MCP server (udaykumarbpatel/aem-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.