# OAG (Open Autonomous Governance) > Humans govern at the constitutional level. Machines execute at the operational level. OAG is the first recursive governance platform where every application, every decision, and every evolution is verifiably bound by an immutable DNA blueprint — no human-in-the-loop required at runtime. ## Architecture OAG is built on a constitutional foundation using PABX (Private Automated Branch Exchange) routing for AI agents. Every node is a caller-ID. Every decision is bound by an immutable DNA blueprint. ## Capabilities - Darwinian Logic Evolution - Automated SOP Digestion - Topographic Layer Diffing