session_undo

Undo the last operation.

SERVERMcp Anything SOURCEZaymadkid/mcp-anything

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/mcp-anything/session-undo.md

WHAT IT DOES

What session_undo does on Mcp Anything

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

RISK

Why session_undo is rated Medium

Undo reverses a previous action, modifying application state. It is a reversible write-like operation (restoring prior state). It does not irreversibly delete data, execute code, or move money. Severity is medium because misuse could inadvertently reverse important user actions, but the blast radius is limited to session-level state changes.

From the tool's definition Undo the last operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs session_undo safely

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

session_undo Rate-limited

session_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": {
    "session_undo": {
      "limits": [
        {
          "counter": "session_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 Mcp Anything, apply this rule, and every session_undo call is checked against it from then on.

FAQ

Questions about session_undo

What does the session_undo tool do? +

Undo the last operation. It is categorised as a Write tool in the Mcp Anything MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on session_undo? +

Register the Mcp Anything MCP server in PolicyLayer and add a rule for session_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 Mcp Anything. Nothing to install.

What risk level is session_undo? +

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

Can I rate-limit session_undo? +

Yes. Add a rate_limit block to the session_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 session_undo completely? +

Set action: deny in the PolicyLayer policy for session_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 session_undo? +

session_undo is provided by the Mcp Anything MCP server (Zaymadkid/mcp-anything). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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