Removes sharing access from a sheet
AI agents call delete_sheet_share to permanently remove resources in Smartsheet MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently revokes sharing permissions on a sheet. While not deleting data itself, it irreversibly removes access controls—an action that cannot be undone without knowledge of the original permission state and deliberate re-sharing. The most severe outcome would be legitimate users losing access to critical shared resources.
From the tool's definition Tool name 'delete_sheet_share' explicitly performs a 'Removes sharing access' operation, which is an irreversible modification of access permissions. The action modifies security/sharing state in a way that cannot be automatically undone.
Attacks that exploit this kind of access
Removes sharing access from a sheet. It is categorised as a Destructive tool in the Smartsheet MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Smartsheet MCP Server MCP server in PolicyLayer and add a rule for delete_sheet_share: 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 Smartsheet MCP Server. Nothing to install.
delete_sheet_share 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_share 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_share. 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_share is provided by the Smartsheet MCP Server MCP server (thomaswtwrt/smar-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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