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 v2.1.233 Home All releases olderv2.1.232 v2.1.234newer
Claude Code v2.1.233

Grader summaries in plugin eval are scrubbed before truncation

Not switched on
Useful2 Signal1
Plugin Eval

Grader summaries in plugin eval are stripped of escape characters before printing.

Terminal-escape scrubbing for grader summaries, inside the early-access plugin eval command.

Feature flag
tengu_walnut_spire 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 v2.1.233: 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 v2.1.233. It isn't a statement about your account. What a flag value here can and cannot tell you

What

The one-line summary printed per grader now has control and formatting characters replaced with spaces before being cut to 200 characters, so a grader explanation cannot push raw escape sequences into your terminal.

Details
  • Part of claude plugin eval, early access behind the remote flag tengu_walnut_spire (default off) or CLAUDE_CODE_WALNUT_SPIRE.
Evidence

/[\p{Cc}\p{Cf}\u2028\u2029]+/gu

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 v2.1.233 →