Critical-risk tools in Outlook MCP Server
7 of the 59 tools in Outlook MCP Server 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
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cancel-eventDestructiveCancels a calendar event
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delete-contactDestructiveDeletes a contact from the mailbox
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delete-emailDestructiveDeletes an email. By default, moves to Deleted Items (soft delete). Set permanent=true to permanently delete the email (cannot be recovered).
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delete-eventDestructiveDeletes a calendar event
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delete-folderDestructiveDeletes a mail folder
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delete-ruleDestructiveDeletes an existing inbox rule
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delete-taskDestructiveDeletes a task from a To Do task list
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.