Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
InternalsArea: what it touches
Internal ChangesKind: in v2.1.307,
Internal ChangesSection of the release
Unclear Nothing shows what this switch controls, so what the new fallback changes is unknown.
What
The built-in fallback for the server-controlled switch tengu_marble_heron changed from the text "core_verb_unavailable" to the number 8. A fallback is the value Claude Code uses when Anthropic's servers send nothing for that switch. The server can still set a different value for each account.
Read from
Feature flag
tengu_marble_heronNot enough to say
Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.
This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.307: not a boolean we can read
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.