Delete a column from a list (by internal name). Cannot delete read-only or sealed columns.
AI agents call delete_column to permanently remove resources in SharePoint MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deleting a column from a SharePoint list is a destructive operation that cannot be undone—it permanently removes the column and any data stored in it. While the tool has guardrails (cannot delete read-only or sealed columns), the core action is irreversible data/schema destruction. This exceeds Write (which is reversible) and qualifies as Destructive.
From the tool's definition Tool name is 'delete_column' and description states it 'Delete a column from a list (by internal name)'. This is an irreversible deletion operation that removes schema/data structure.
Attacks that exploit this kind of access
Delete a column from a list (by internal name). Cannot delete read-only or sealed columns. It is categorised as a Destructive tool in the SharePoint MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the SharePoint MCP Server MCP server in PolicyLayer and add a rule for delete_column: 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 SharePoint MCP Server. Nothing to install.
delete_column 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_column 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_column. 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_column is provided by the SharePoint MCP Server MCP server (lukassevcik/sharepoint-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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