Permanently delete an event from the primary calendar using its unique event ID.
AI agents call google_calendar_delete_events to permanently remove resources in ContextCore MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Calendar events are user data that, once deleted permanently, cannot be restored. This action is irreversible and destructive. Although the blast radius is narrower than system-wide data deletion, the permanent nature and user-facing impact classify this as Destructive rather than Write.
From the tool's definition Tool description explicitly states "Permanently delete an event" — the use of "Permanently" indicates irreversible data loss. The tool accepts an event ID and removes calendar data that cannot be recovered through normal means.
Attacks that exploit this kind of access
Permanently delete an event from the primary calendar using its unique event ID. It is categorised as a Destructive tool in the ContextCore MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the ContextCore MCP server in PolicyLayer and add a rule for google_calendar_delete_events: 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 ContextCore MCP. Nothing to install.
google_calendar_delete_events 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 google_calendar_delete_events 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 google_calendar_delete_events. 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.
google_calendar_delete_events is provided by the ContextCore MCP server (rkpraveendev/contextcore-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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