undo_last_paste · Cut-Copy-Paste Clipboard Server MCP

WHAT IT DOES

What undo_last_paste does on Cut-Copy-Paste Clipboard Server

AI agents use undo_last_paste to create or update resources in Cut-Copy-Paste Clipboard Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Cut-Copy-Paste Clipboard Server environment.

WHY IT NEEDS A POLICY

Why undo_last_paste needs a policy

This tool reverses a paste (write) operation, restoring file content to a previous state. While it sounds like a recovery action, it actively modifies file content, making it a Write operation. It is reversible in principle (the paste can be redone), so it does not qualify as Destructive. Misuse could corrupt code files, hence medium severity.

From the tool's definition Undo the most recent paste operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

undo_last_paste Rate-limited

undo_last_paste 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": {
    "undo_last_paste": {
      "limits": [
        {
          "counter": "undo_last_paste_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 Cut-Copy-Paste Clipboard Server, so you can run agents against it safely.

FAQ

Questions about undo_last_paste

What does the undo_last_paste tool do? +

Undo the most recent paste operation. It is categorised as a Write tool in the Cut-Copy-Paste Clipboard 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 undo_last_paste? +

Register the Cut-Copy-Paste Clipboard Server MCP server in PolicyLayer and add a rule for undo_last_paste: 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 Cut-Copy-Paste Clipboard Server. Nothing to install.

What risk level is undo_last_paste? +

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

Can I rate-limit undo_last_paste? +

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

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

undo_last_paste is provided by the Cut-Copy-Paste Clipboard Server MCP server (pr0j3c7t0dd-ltd/cut-copy-paste-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.