Deletes a calendar event
AI agents call delete-event to permanently remove resources in Outlook Assistant — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deletion of calendar events cannot be undone and removes data permanently. This is a classic Destructive action. Severity is high because calendar events often represent important commitments (meetings, deadlines); an AI agent misusing this could delete critical business or personal events. Confidence is high because the intent is unambiguous.
From the tool's definition Tool name is 'delete-event' and description states 'Deletes a calendar event' — this is an irreversible deletion operation.
Attacks that exploit this kind of access
Deletes a calendar event. It is categorised as a Destructive tool in the Outlook Assistant MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Outlook Assistant 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 Outlook Assistant. 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 Outlook Assistant MCP server (titanzero/outlook-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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