Delete a calendar event from Outlook.
AI agents call cal_delete to permanently remove resources in Outpost — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deleting a calendar event is a destructive action that cannot be undone and permanently removes scheduled information. While not as critical as financial or authentication compromise, a malicious agent could disrupt meetings, schedules, and business operations by deleting calendar events.
From the tool's definition Tool name contains 'delete' and description explicitly states 'Delete a calendar event from Outlook.' This is an irreversible operation that removes data.
Attacks that exploit this kind of access
Delete a calendar event from Outlook. It is categorised as a Destructive tool in the Outpost MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Outpost MCP server in PolicyLayer and add a rule for cal_delete: 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 Outpost. Nothing to install.
cal_delete 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 cal_delete 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 cal_delete. 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.
cal_delete is provided by the Outpost MCP server (signalclaude/outpost). 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.
Teams ship this data inside their own products. See what a licence covers →