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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.277 ·

CLAUDE_CODE_HANDBACK_PROVENANCE now defaults to enabled

The tengu_melodic_wolf flag behind CLAUDE_CODE_HANDBACK_PROVENANCE now defaults to true instead of false

Group of 3 You'll notice Improvements
JSON All of v2.1.277
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SubagentsArea: what it touches
ImprovementsKind: in v2.1.277,
ImprovementsSection of the release

What The internal flag tengu_melodic_wolf, which controls the CLAUDE_CODE_HANDBACK_PROVENANCE setting, now defaults to true instead of false when not otherwise overridden.

Why Handback provenance is now on by default for everyone, rather than requiring users to opt in explicitly.

Read from
Feature flag
tengu_melodic_wolf 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 v2.1.277: 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 v2.1.277. It isn't a statement about your account. What a flag value here can and cannot tell you

See this entry in the whole of v2.1.277 →

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