AI agents call excel_delete_sheet to permanently remove resources in Excel — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes a worksheet from an Excel file, destroying all contained data without the ability to undo the operation through the API. This is irreversible data loss and represents a Destructive action, which takes priority over Write or Execute categories.
From the tool's definition Tool name 'excel_delete_sheet' combined with description '删除工作表' (Chinese for 'delete worksheet') explicitly indicates irreversible deletion of an entire sheet and all its data.
Documented attack patterns abuse exactly the kind of access excel_delete_sheet gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Excel, and nothing reaches the server without passing your rules. This is the rule we recommend for excel_delete_sheet:
{
"version": "1",
"default": "deny",
"hide": [
"excel_delete_sheet"
]
}excel_delete_sheet disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
Free to start. No card required.
删除工作表. It is categorised as a Destructive tool in the Excel MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Excel MCP server in PolicyLayer and add a rule for excel_delete_sheet: 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 Excel. Nothing to install.
excel_delete_sheet is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the excel_delete_sheet 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 excel_delete_sheet. 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.
excel_delete_sheet is provided by the Excel MCP server (tangentdomain/excel-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Excel, 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.
36 Excel tools catalogued and risk-classified — across an index of 43,000+ MCP servers.