Webhook vs Egress: Two Architectures for AI Agent Security

The article compares webhook-based runtime monitoring and network-egress firewalls as two AI agent security architectures.

Webhook monitoring intercepts proposed agent actions inside the platform’s cooperative execution path before they run.

Egress firewalls inspect outbound traffic through a proxy, protecting a different boundary of the attack surface.

Each approach has strengths and limits, so mature AI agent defenses often need both to avoid blind spots.