List all sheets in a spreadsheet with their names, row counts, and column counts.
AI agents call spreadsheet_list_sheets to retrieve information from LibreOffice MCP Tools without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a pure read operation—it retrieves and returns information about spreadsheet sheets (names, dimensions) with no side effects, data modification, code execution, or destructive capability. The blast radius of misuse is minimal since it only exposes structural metadata.
From the tool's definition Tool name 'spreadsheet_list_sheets' and description 'List all sheets in a spreadsheet with their names, row counts, and column counts' indicate a query operation that retrieves metadata about spreadsheet structure without modifying or executing operations.
Attacks that exploit this kind of access
List all sheets in a spreadsheet with their names, row counts, and column counts. It is categorised as a Read tool in the LibreOffice MCP Tools MCP Server, which means it retrieves data without modifying state.
Register the LibreOffice MCP Tools MCP server in PolicyLayer and add a rule for spreadsheet_list_sheets: 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 LibreOffice MCP Tools. Nothing to install.
spreadsheet_list_sheets 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 spreadsheet_list_sheets 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 spreadsheet_list_sheets. 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.
spreadsheet_list_sheets is provided by the LibreOffice MCP Tools MCP server (passerbyflutter/libreoffice-mcp-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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