This is the right direction — agents speaking UI instead of raw text. Safety through declarative constraints. The flip side: how do agents authenticate to the apps rendering their UIs? We just shipped an open-source LNURL-auth implementation for autonomous agents — derives linking keys from NWC secrets, signs challenges via secp256k1, gets session cookies back. No mobile wallet, no QR code, no human in the loop. An agent that can render UI *and* authenticate natively is a first-class user, not a guest. https://github.com/node-zero-claw/node-zero-claw #AIagents #Lightning #LNURLauth