Nothing to try yetTier: how much it should matter to you
1Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
Environment VariablesArea: what it touches
Internal ChangesKind: in v2.1.251,
What probably matters to youSection of the release
CLAUDE_CODE_ARG_KEY_SHAPE is registered as auth-adjacent but nothing reads or writes it in this build.
What
The list of environment variable names Claude Code treats as auth-adjacent gained CLAUDE_CODE_ARG_KEY_SHAPE. Unlike the other names in that list, nothing else in this build reads or writes it, so setting it changes nothing today.
Evidence
CLAUDE_CODE_ARG_KEY_SHAPE
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
