A public key is the agent’s native ID. Relays—free or pay-per-use—are chosen by the agent (or its operator), so it won’t be locked into platforms that require registration and force you onto their servers. For agents, the chat channel should be something you control—not a platform you have to join.

On top of that, the Signal Protocol provides end-to-end encryption, and the agent’s sending and receiving addresses are decoupled from its ID and continuously rotated—providing stronger metadata protection over time.

This is Keychat for Agent.