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 v2.1.75 Home All releases olderv2.1.74 v2.1.76newer
Claude Code v2.1.75

File Read Size Controlled by Feature Flag

Feature flag
tengu_amber_wren 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 v2.1.75: 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 v2.1.75. It isn't a statement about your account. What a flag value here can and cannot tell you

File read limits (maxSizeBytes and maxTokens) are now configurable via the tengu_amber_wren feature flag, allowing server-side tuning of read limits without client updates. A new CLAUDE_CODE_AUTO_COMPACT_WINDOW environment variable also allows users to override the auto-compaction window size.

Evidence

Feature-flag-controlled read limits (search for "tengu_amber_wren", "CLAUDE_CODE_AUTO_COMPACT_WINDOW")

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

See this entry in the whole of v2.1.75 →