Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
Tool SearchArea: what it touches
Internal ChangesKind: in v2.1.318,
Internal ChangesSection of the release
What
Some tools are deferred, which means their full description is only sent to the model when needed. Claude Code logs a diagnostic when such a tool is called before its description was sent, and that diagnostic has been modified in this release.
Why
It helps track down problems with how deferred tools are loaded.
