{"version":"2.1.323","anchor":"background-session-classifier-gains-other-thread-addenda-a","canonical_anchor":"background-session-classifier-gains-other-thread-addenda-a","heading":"Background session summaries can mention other threads and retry repeated replies","tier":"internal","area":"Sessions","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.323\/e\/background-session-classifier-gains-other-thread-addenda-a","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.323","markdown":"### Background session summaries can mention other threads and retry repeated replies\n\nThe summarizer for background sessions can add notes about other threads and retries when its reply repeats the tools line\n\n**What**\n\nA background session is one that keeps working while you do something else. Claude Code uses a classifier to summarize these sessions. The classifier is a separate model request that reads a session and describes it. It changed in two ways:\n\n- Extra instructions about \"other threads\" can now be added to its request, including one for project recaps.\n\n- A reply that repeats the tools line is now rejected, and the request is tried again.\n\n**Why**\n\nThis changes how Claude Code summarizes background sessions.\n\n- Area: Sessions\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 2\/5\n- Scope: individual\n- Heads-up: no"}