session/started

A session became newly loaded on this host via session/start or session/fork; broadcast to every initialized connection.

Parameters

Type: SessionStartedParams

session/started params: a session became newly loaded on this host via session/start, session/fork, or session/sideChat, broadcast to every initialized connection.

The one member is the same $defs/Session object the session/start/session/fork results carry, so the broadcast and the result describe one fact through one type — the host builds the broadcast payload as a $defs/Session — the fresh-start arm reuses the result’s session member, the start-replay arm builds the live attach snapshot — and the emission is parity-gated against this type at the producer (session-server prod-assembly capture) and over the committed transcript corpus (conformance session_lifecycle_enrollment).

Field	Type	Stability	Presence	Description
session	Session		required	The newly loaded session, as of the start/fork fold.

Source

schema/msp/experimental/msp.schema.json#/notifications/session~2Fstarted

{
  "description": "A session became newly loaded on this host via session/start or session/fork; broadcast to every initialized connection.",
  "params": {
    "$ref": "#/$defs/SessionStartedParams"
  }
}