Delete a VEVENT by UID from the given calendar.
AI agents call delete_event to permanently remove resources in iCloud CalDAV MCP Connector — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes calendar events without possibility of reversal. While not financial in nature, it causes irreversible data loss and has a high blast radius if an AI agent mistakenly deletes important calendar events (meetings, reminders, schedules). The Destructive category applies to actions that cannot be undone, and calendar event deletion meets this criterion.
From the tool's definition Tool description explicitly states 'Delete a VEVENT by UID from the given calendar.' The term 'Delete' combined with calendar event removal indicates irreversible data destruction.
Attacks that exploit this kind of access
Delete a VEVENT by UID from the given calendar. It is categorised as a Destructive tool in the iCloud CalDAV MCP Connector MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the iCloud CalDAV MCP Connector MCP server in PolicyLayer and add a rule for delete_event: 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 iCloud CalDAV MCP Connector. Nothing to install.
delete_event 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_event 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_event. 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_event is provided by the iCloud CalDAV MCP Connector MCP server (localhost433/icloud-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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