Type Alias McpNotificationStreamStatus`Experimental`

McpNotificationStreamStatus:
    | "idle"
    | "connecting"
    | "open"
    | "reconnecting"
    | "unsupported"
    | "failed"
    | "closed"

Lifecycle of one subscription.

unsupported, failed, and closed are terminal — the stream never leaves them, and a consumer that wants another subscription opens a new one.

"idle"
Constructed, not yet started.
"connecting"
The first GET is in flight.
"open"
Subscribed; frames are being read.
"reconnecting"
The stream dropped; a backoff delay is running before the next attempt.
"unsupported"
The server answered 405/501: it offers no GET notification stream. Terminal.
"failed"
The reconnect budget was exhausted. Terminal.
"closed"
Torn down by McpNotificationStream.close or the caller's signal. Terminal.