Stream resilience

const { state, status } = useAgentStream({
  url, sessionId,
  retry: { maxAttempts: 5, initialDelayMs: 500, maxDelayMs: 30_000, jitter: "full" },
  buffer: { max: 1000, onOverflow: "drop-oldest" },
  auth: {
    getToken: () => fetchToken(),
    onUnauthorized: () => refreshSession(),
  },
});

status widens to "idle" | "connecting" | "open" | "reauthenticating" | "reconnecting" | "closed" | "error". With no configs, defaults preserve previous behavior (infinite retry, unbounded buffer, no auth header).

Server-side: include an id: line on each event so Last-Event-ID reconnects can resume; return HTTP 401 to trigger auth.onUnauthorized + auth.getToken.

Related

• Server companion (Node)
• <AgentRoot>