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 v2.1.238 Home All releases olderv2.1.237 v2.1.239newer
Claude Code v2.1.238

Plaintext credential store gained an in-process cache

Not switched on
Useful1 Signal2
Internals not in their notes

Plaintext credential reads could come from memory instead of the file, but only under off-by-default storage.

An in-process credential cache with a generation counter is present but only applies when the v5 storage decision is on.

Feature flag
tengu_hover_rest 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 v2.1.238: on

Read once, for one account on one subscription tier, against v2.1.238. It isn't a statement about your account. What a flag value here can and cannot tell you

CLAUDE_CODE_HOVER_REST
What

Reads of the plaintext credential store can be served from a cached snapshot held in memory rather than re-reading the file, with a generation counter and an explicit invalidation entry point. Every write, delete and failed read clears it. This only applies when the off-by-default v5 storage decision is on.

Details
  • Controlled by the same latched pin as the rest of v5 storage: CLAUDE_CODE_HOVER_REST if set, otherwise tengu_hover_rest, whose fallback is off.
Evidence

fromStoreCopy

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 v2.1.238 →