create_spreadsheet · Mcp Google Sheets MCP: Risk & Policy

WHAT IT DOES

What create_spreadsheet does on Mcp Google Sheets

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

WHY IT NEEDS A POLICY

Why create_spreadsheet needs a policy

Creating a new spreadsheet is a reversible Write operation—a new resource is instantiated but can be deleted. This is not Destructive (no data loss), not Execute (no code execution or external triggers), and not Financial. Severity is medium because creating spreadsheets is low-risk but could be misused to spam or exhaust quota if done at scale.

From the tool's definition Tool named 'create_spreadsheet' with empty description; context of 'Google Sheets' server indicates creation of new spreadsheet documents.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_spreadsheet Rate-limited

create_spreadsheet 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": {
    "create_spreadsheet": {
      "limits": [
        {
          "counter": "create_spreadsheet_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 Mcp Google Sheets, so you can run agents against it safely.

FAQ

Questions about create_spreadsheet

What does the create_spreadsheet tool do? +

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

How do I enforce a policy on create_spreadsheet? +

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

What risk level is create_spreadsheet? +

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

Can I rate-limit create_spreadsheet? +

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

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

create_spreadsheet is provided by the Mcp Google Sheets MCP server (yardobr/mcp-google-sheets). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.