The Two-Wall Defense: Why AI Agents Need Webhooks AND Network Firewalls

Webhook-based monitoring and network-egress firewalls represent two complementary but distinct security boundaries for AI agents. While webhooks enable fine-grained policy decisions with full context awareness, they depend on platform cooperation—a dependency that network firewalls bypass by inspecting traffic at the network layer. Production deployments increasingly require both architectures to fully secure the AI agent attack surface.