Delete a sheet from a workbook
AI agents call delete_sheet to permanently remove resources in Excel MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deleting a sheet removes data and structure that cannot be undone (no undo mechanism described). This is destructive rather than merely Write because the action is irreversible and removes existing content. Blast radius depends on workbook importance but could affect critical business data. Severity is high because sheet deletion is permanent, though not a financial transaction and not arbitrary code execution.
From the tool's definition Tool name and description: 'delete_sheet' explicitly performs deletion of a sheet from a workbook. Deletion is irreversible data removal.
Attacks that exploit this kind of access
Delete a sheet from a workbook. It is categorised as a Destructive tool in the Excel MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Excel MCP Server MCP server in PolicyLayer and add a rule for 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 MCP Server. Nothing to install.
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 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 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.
delete_sheet is provided by the Excel MCP Server MCP server (jauinones/xlsx-mcp). 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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