删除工作表
AI agents call delete_worksheet 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 worksheet irreversibly removes data and cannot be undone, making this a Destructive operation. While it operates on worksheet-level objects rather than cell-level data, the loss is complete and permanent. Severity is high because an AI agent misusing this tool could lose significant amounts of structured data, though the impact is scoped to a single worksheet rather than an entire file system.
From the tool's definition Tool name 'delete_worksheet' performs deletion operation on worksheet data. Description '删除工作表' (Chinese: 'delete worksheet') explicitly indicates permanent removal of a worksheet.
Attacks that exploit this kind of access
删除工作表. 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_worksheet: 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_worksheet 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_worksheet 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_worksheet. 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_worksheet is provided by the Excel MCP Server MCP server (xuhongxin/excel-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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