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 v2.1.228 Home All releases olderv2.1.227 v2.1.229newer
Claude Code v2.1.228

Diff panel usage event

Not switched on
Useful1 Signal2
Diff Panel

Opening the diff panel records one event with your terminal width bucket.

Diff panel telemetry only fires when tengu_willow_crate is on, and it falls back to false.

Feature flag
tengu_willow_crate Off 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 v2.1.228: on

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 v2.1.228. It isn't a statement about your account. What a flag value here can and cannot tell you

What

Showing the diff panel fires one event per session recording whether it opened automatically or because you opened it, plus your terminal width bucketed as under_110, 110_to_143, 144_to_199 or 200_plus. Only reachable when the tengu_willow_crate gate is on, and its fallback here is false.

Evidence

tengu_repl_diff_panel_shown

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.228 →