You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
InternalsArea: what it touches
Internal ChangesKind: in v2.1.315,
Internal ChangesSection of the release
What
Claude Code keeps an internal log of what it is doing. A new check decides whether a message may be written: its level (how important it is) must be one the logger accepts, and either debug mode must be on or Claude Code must be an Anthropic-internal build. The existing level comparison has also been moved into a shared helper.
Why
In practice, regular users outside debug mode may see fewer of these log messages written.