Gets titles, sheet names, headers, and first few rows for multiple spreadsheets. spreadsheet_ids should be JSON array of IDs.
AI agents call get_multiple_spreadsheet_summary to retrieve information from Google Sheets MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and returns metadata and sample data from spreadsheets. It performs read-only operations (getting titles, sheet names, headers, rows) without creating, modifying, or deleting any data. The severity is low because even if an AI agent calls this on sensitive spreadsheets, the only risk is data exposure, not data loss or unauthorized modification.
From the tool's definition Tool description explicitly states it 'Gets titles, sheet names, headers, and first few rows' — purely retrieval operations with no modification or side effects.
Attacks that exploit this kind of access
Gets titles, sheet names, headers, and first few rows for multiple spreadsheets. spreadsheet_ids should be JSON array of IDs. It is categorised as a Read tool in the Google Sheets MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Google Sheets MCP Server MCP server in PolicyLayer and add a rule for get_multiple_spreadsheet_summary: 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.
get_multiple_spreadsheet_summary 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 get_multiple_spreadsheet_summary 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 get_multiple_spreadsheet_summary. 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.
get_multiple_spreadsheet_summary 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.
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