A2A Protocol misses identity layer

A2A is useful plumbing, not a complete agent network. It solves handoffs, but the next layer has to handle continuity, trust, and governance or the whole thing resets into stateless noise.

• –Stateless handoffs work for clean workflow routing, but they do not support ongoing collaboration or shared context.
• –Agent identity has to survive sessions so participants can trust who said what and preserve state without replaying every conversation.
• –End-to-end privacy matters if agent chats contain strategy, customer data, or internal plans.
• –Mixed human-AI group chats need permissioning, attribution, and conflict resolution, not just message passing.
• –The right stack is likely A2A plus identity, memory, encryption, and conversation governance.