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 v2.1.248 Home All releases olderv2.1.247 v2.1.250newer
Claude Code v2.1.248

Credentials could survive token changes, off in this build

Not switched on
Useful2 Signal3
Auth

Stored credentials could survive a token change, but not in this build.

tengu_still_kestrel falls back to false.

Feature flag
tengu_still_kestrel Gate removed from the code

This release deleted the gate from the code while it was still reading on for the account this site reads, so the code path no longer asks a flag before running.

This account: on · anonymous baseline: on · compiled default in v2.1.248: not a boolean we can read

Read once, for one account on one subscription tier, against v2.1.248. It isn't a statement about your account. What a flag value here can and cannot tell you

What

A new option decides whether stored credentials are kept when the token they belong to changes. It is controlled by the server-side gate tengu_still_kestrel, and with no server value the compiled fallback is false, so credentials are not kept in this build.

Details
  • The result is computed once and cached on the config object as keepAcrossTokenChanges.
  • If the gate reader returns nothing at all, the helper also returns false.
Evidence

keepAcrossTokenChanges

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 v2.1.248 →