Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
CompactionArea: what it touches
Internal ChangesKind: in v2.1.323,
Internal ChangesSection of the release
What
When a conversation grows too long, Claude Code compacts it, which means summarising earlier parts to free up space. The prompt used for that step carries its own copy of the Skill tool's description, the text Claude reads about loading skills. That copy was reworded in this release.
It says that a skill running in the background returns only the helper agent's name. Its result arrives later as a task notification, so Claude should not wait on it or call it again in the meantime.
Why
Changing Claude's instructions can change how it behaves. This text guides Claude away from waiting on or repeating a background skill.
