High-risk tools in Campaign Monitor MCP
7 of the 113 tools in Campaign Monitor MCP are classified as high 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 high risk
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create_external_sessionExecuteInitiate a new login session for embedding Campaign Monitor in an iframe
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publish_journey_eventExecutePublish an event to trigger a subscriber activity journey. event_data must be a JSON string with the structure: {
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resend_transactional_messageExecuteResend a previously sent transactional message
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send_campaignExecuteSend or schedule a campaign for delivery
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send_classic_emailExecuteSend a one-off transactional email via Campaign Monitor
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send_smart_emailExecuteSend a transactional email using a Campaign Monitor smart email template
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test_webhookExecuteSend a test payload to a webhook
Attacks that target this class
High-risk tools in any server share these documented attack patterns. Each links to the full case and the defensive policy.