Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.227 Home All releases olderv2.1.226 v2.1.228newer
Claude Code v2.1.227

Live headline above the spinner describing the current task

You'll notice
Useful4 Signal3
Terminal UI not in their notes

The spinner can show a short headline of what Claude is actually working on right now.

Feature flag
tengu_classifier_disabled_surfaces Not 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 v2.1.227: 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.

Read once, for one account on one subscription tier, against v2.1.227. It isn't a statement about your account. What a flag value here can and cannot tell you

tengu_classifier_disabled_surfaces
What

Interactive sessions can now show a short headline saying what Claude is working on, in place of the generic activity text next to the spinner. It is produced by the existing post-turn classifier, which for this surface uses a cheap built-in heuristic instead of an extra model call. The remote setting tengu_classifier_disabled_surfaces (empty by default, so nothing is turned off) can list repl to disable it.

Details
  • The classifier's surface map gained repl: ["headline"], and surface detection now adds repl for interactive sessions.
  • When the headline output is active, the classifier writes new app state taskSummary holding the text and a timestamp; the transcript and spinner renderer prefer it over the generic activity text.
  • Because the requested output set is headline-only, the engine selector resolves to the heuristic path, so no additional model request is made for it.
Evidence

repl: ["headline"]

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.227 →