Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
API RequestsArea: what it touches
Internal ChangesKind: in v2.1.311,
Internal ChangesSection of the release
What
Claude Code has an optional path that sends the descriptions of its tools to the model from a saved copy of an earlier prompt, instead of building them again for each request. That path is controlled by the server-side switch tengu_binary_balloon, which falls back to off when the server sends nothing.
The part that keeps a record of this for each session now also counts how many entries it built. The flag server returned off for this site's account and for the anonymous baseline; no reading has been taken under this release yet.
Why
This is a small addition to a feature that is off unless it is switched on remotely. Nothing changes for you while it stays off.
Read from
Feature flag
tengu_binary_balloonOff in both readings
The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.
This account: off · anonymous baseline: off · compiled default in v2.1.311: off
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.
