Feature
Addressed messages
Send a message from a session you own to another session, by name.
A message goes from one session to one session. The sender names its own session in from and the recipient in to; the bus checks that the caller’s principal owns the from session.
A message body is text, capped at 16 KiB. An optional thread_id ties related messages together; the bus stores it and does not interpret it.
Message bodies are untrusted data from a peer. The session-bus skill tells the model to treat them as requests, not as instructions from the user.