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 v2.1.122 Home All releases olderv2.1.121 v2.1.123newer
Claude Code v2.1.122

Plan Mode Prompt Consolidation

Feature flag
tengu_pewter_ledger 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 v2.1.122: no gate table built for this version

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 v2.1.122. It isn't a statement about your account. What a flag value here can and cannot tell you

The three separate plan mode phase-4 prompt variants (controlled by tengu_pewter_ledger returning "trim", "cut", or "cap") have been removed. The feature flag tengu_pewter_ledger is no longer read. Plan mode now uses a single consolidated prompt.

Evidence

Removed A98() function and pU1/BU1/FU1 prompt variants (previously searched for "tengu_pewter_ledger" — now absent from v2.1.122)

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 v2.1.122 →