Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
AgentsArea: what it touches
Internal ChangesKind: in v2.1.319,
Internal ChangesSection of the release
What
Agents can carry a description of when to use them. Claude Code builds an internal marker from it. Before, the marker told apart an empty description and a filled-in one, and a missing description produced no marker. Now a missing description gets a marker of its own, giving three cases.
Why
This affects internal bookkeeping, such as cache keys, more than anything you see.
