Critical-risk tools in Mail Cal Drive

Critical severity Mail Cal Drive MCP Server 5 of 36 tools

5 of the 36 tools in Mail Cal Drive are classified as critical risk. This page profiles those tools specifically, with recommended policy actions and the attack patterns that target them.

Every operation listed below is an action PolicyLayer recommends controlling at the transport layer. Open any tool to see the full profile, risk score, and YAML policy snippet.

Tools at critical risk

auth_revoke Destructive

Remove an account and revoke its credentials
bulk_mail_action Destructive

Perform bulk actions on messages matching criteria
delete_event Destructive

Delete a calendar event
delete_file Destructive

Delete a file (moves to trash by default)
delete_message Destructive

Delete an email message (moves to trash by default)

Attacks that target this class

Critical-risk tools in any server share these documented attack patterns. Each links to the full case and the defensive policy.

Destructive Action Autonomy
Privilege escalation via admin-only tools
Data exfiltration via tool chaining
Runaway Tool Loops

Critical-risk tools in Mail Cal Drive

Tools at critical risk

Attacks that target this class

More on Mail Cal Drive

Enforce policy on every Mail Cal Drive tool call.