How durable sessions unify human-to-human and human-to-agent messages

What this post added

This post introduces the concept of 'durable sessions' as a shared medium for agents and humans to exchange messages, enabling multi-user and multi-agent collaboration. It details how Ably AI Transport implements this primitive on top of Ably channels, providing explicit control over agent invocation separate from message sending. The post highlights features such as resumable streaming, session continuity across devices, agent presence, human handover, bidirectional control, and multi-agent coordination, extending the capabilities of the AI Transport SDK.