listSheets

THE RISK

Low Risk

Why listSheets needs a policy

This tool queries and returns information about sheets within a spreadsheet without creating, modifying, deleting, or executing any operations. It is a straightforward read-only retrieval operation with minimal security impact.

From the tool's definition 'Lists all the sheets present in the spreadsheet' - retrieves metadata about sheet structure with no modification or side effects.

Documented attack patterns abuse exactly the kind of access listSheets gives an agent:

POLICY

How to control listSheets

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Google Sheets, and nothing reaches the server without passing your rules. This is the rule we recommend for listSheets:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "listSheets": {}
  }
}

listSheets is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Mcp Google Sheets — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Mcp Google Sheets tools

Write addColumns Adds the specified number of columns to the specified sheet. Accepts spreadsheetId, sheetn Write addRows Adds the specified number of rows to the specified sheet. Accepts spreadsheetId, sheetname Write batchUpdate Updates a range of values using the batchUpdate function of google sheets. The ranges are Write copySheet Copies the contents of the source sheet to destination sheet. Accepts srcSpreadsheet, srcS Write create Creates a spreadsheet by taking the new sheet Write createSheet Creates a new sheet in the spreadsheet provided as an argument. Accepts spreadsheet id and Write renameSheet Renames the provided sheet. Accepts spreadsheet id, old name and new name of the sheet as Write shareSpreadsheet Shares the provided spreadsheet to the recipients provided as an argument. Accepts recipie

All 13 Mcp Google Sheets tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about listSheets

What does the listSheets tool do? +

Lists all the sheets present in the spreadsheet. Accepts spreadsheet id as input argument. It is categorised as a Read tool in the Mcp Google Sheets MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on listSheets? +

Register the Mcp Google Sheets MCP server in PolicyLayer and add a rule for listSheets: 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 listSheets? +

listSheets is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit listSheets? +

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

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

listSheets is provided by the Mcp Google Sheets MCP server (rohans2/mcp-google-sheets). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Google Sheets tool call.

Start from Mcp Google Sheets, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →