Returns a list of all the spreadsheets present within the current context. Returns the spreadsheet data in the form of [{spreadsheetId, spreadsheet name},...]
AI agents call listSpreadsheets to retrieve information from Mcp Google Sheets without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool simply lists or enumerates spreadsheets and returns their IDs and names. It performs no side effects, creates no resources, executes no code, and does not modify or delete any data. It is a straightforward read/query operation. Severity is low because listing spreadsheets reveals metadata about available resources but does not expose the spreadsheet contents themselves or enable modification.
From the tool's definition Tool name 'listSpreadsheets' and description 'Returns a list of all the spreadsheets' indicates data retrieval with no modification. The phrase 'returns the spreadsheet data in the form of' confirms it is a query operation that retrieves metadata only.
Documented attack patterns abuse exactly the kind of access listSpreadsheets gives an agent:
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 listSpreadsheets:
{
"version": "1",
"default": "deny",
"tools": {
"listSpreadsheets": {}
}
}listSpreadsheets is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Returns a list of all the spreadsheets present within the current context. Returns the spreadsheet data in the form of [{spreadsheetId, spreadsheet name},...]. It is categorised as a Read tool in the Mcp Google Sheets MCP Server, which means it retrieves data without modifying state.
Register the Mcp Google Sheets MCP server in PolicyLayer and add a rule for listSpreadsheets: 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.
listSpreadsheets is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the listSpreadsheets 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.
Set action: deny in the PolicyLayer policy for listSpreadsheets. 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.
listSpreadsheets 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.
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.
Free to start. No card required.
13 Mcp Google Sheets tools catalogued and risk-classified — across an index of 43,000+ MCP servers.