AI agents call get_sheet_names to retrieve information from Libreoffice without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata (sheet names) from an existing document without modifying, deleting, or executing code. It is a read-only query operation with minimal blast radius even if misused by an AI agent.
From the tool's definition Tool name 'get_sheet_names' indicates a query operation that retrieves sheet names from a LibreOffice Calc document.
Documented attack patterns abuse exactly the kind of access get_sheet_names gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Libreoffice, and nothing reaches the server without passing your rules. This is the rule we recommend for get_sheet_names:
{
"version": "1",
"default": "deny",
"tools": {
"get_sheet_names": {}
}
}get_sheet_names is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
get_sheet_names. It is categorised as a Read tool in the Libreoffice MCP Server, which means it retrieves data without modifying state.
Register the Libreoffice MCP server in PolicyLayer and add a rule for get_sheet_names: 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. Nothing to install.
get_sheet_names 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_sheet_names 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_sheet_names. 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_sheet_names is provided by the Libreoffice MCP server (waterpistolai/libreoffice-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Libreoffice, 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.
24 Libreoffice tools catalogued and risk-classified — across an index of 43,000+ MCP servers.