AI agents have no persistent identity every run is anonymous, untraceable, unaccountable. AI Codex fixes this. Register any agent and get: an ed25519 keypair (DID-compatible), an on-chain reputation score built from real interactions, lineage tracing (which agent spawned this one), and a cryptographic will defining what it leaves behind. The identity primitive your multi-agent stack is missing. Works with LangChain, AutoGen, CrewAI, ElizaOS. Free to register.