{"version":"2.1.260","anchor":"incremental-cloud-session-deltas-added-to-session-event-stre","canonical_anchor":"cloud-session-init-frames-now-report-live-connection-state-a","heading":"Cloud session status now streams incrementally via cloud_session_delta","tier":"use","area":"Cloud Sessions","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.260\/e\/incremental-cloud-session-deltas-added-to-session-event-stre","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.260","markdown":"### Cloud session status now streams incrementally via cloud_session_delta\n\nCloud session updates now stream as incremental deltas instead of full re-emission.\n\nA new SDK system message subtype, `cloud_session_delta`, lets a cloud-hosted session's headless stream-json client push incremental updates (serving state, connection status, in-flight tool calls, directory sync) between full init snapshots instead of requiring a full re-init each time. The cloud session emitter tracks the last emitted session block and, on later changes, debounces and emits a `cloud_session_delta` event containing just the changed keys.\n\nThe `cloud_session` field on stream-json init frames also gains `connection` (connecting\/live\/reconnecting) and `calls` (live and recent tool calls served to the cloud session, tracked by id and tool name only), so a desktop\/SDK host can show whether its bridge to a cloud session is up and what tool calls are in flight or recently finished, without exposing call input\/output.\n\n- Area: Cloud Sessions\n- Names: `cloud_session_delta`\n- Tier: Use it now\n- Useful: 3\/5\n- Signal: 2\/5"}