The session detail view for Claude Code on the web previously walked every assistant message and tool_use block on each render just to count agents and tool calls and find the last tool used. It now reads agentSpawnCount, toolCallCount, and lastToolUse from a per-session stats record instead. The displayed information is unchanged, but rendering long sessions no longer requires rescanning the full transcript each time.
Cloud session detail panel reads aggregated stats instead of rescanning the transcript
Claude Code on the web session panel now reads precomputed stats instead of rescanning the whole transcript on every render
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
Cloud SessionsArea: what it touches
Internal ChangesKind: in v2.1.235,
Internal ChangesSection of the release