copy_sheet · Google Sheets MCP Server MCP: Risk & Policy

WHAT IT DOES

What copy_sheet does on Google Sheets MCP Server

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

WHY IT NEEDS A POLICY

Why copy_sheet needs a policy

This tool creates new data (a duplicated sheet) but the action is reversible by deleting the copied sheet. It does not execute arbitrary code, delete data irreversibly, or move financial assets. While it could proliferate data across spreadsheets if misused at scale, the operation itself is a write/create action with normal Write severity.

From the tool's definition Tool name 'copy_sheet' and description 'Duplicates a sheet within a spreadsheet or to another spreadsheet' indicates creation of new sheet data through duplication.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

copy_sheet Rate-limited

copy_sheet 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": {
    "copy_sheet": {
      "limits": [
        {
          "counter": "copy_sheet_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 Google Sheets MCP Server, so you can run agents against it safely.

FAQ

Questions about copy_sheet

What does the copy_sheet tool do? +

Duplicates a sheet within a spreadsheet or to another spreadsheet. It is categorised as a Write tool in the Google Sheets 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 copy_sheet? +

Register the Google Sheets MCP Server MCP server in PolicyLayer and add a rule for copy_sheet: 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 Google Sheets MCP Server. Nothing to install.

What risk level is copy_sheet? +

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

Can I rate-limit copy_sheet? +

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

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

copy_sheet is provided by the Google Sheets MCP Server MCP server (santiagopereda/mcp_googlesheets). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.