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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.242 ·

Subagent results can carry a provenance frame that skips the hand-off review

Subagent results can be tagged to show which parts Claude Code wrote versus the model.

Under the hood In Development
JSON All of v2.1.242
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SubagentsArea: what it touches
In DevelopmentKind: in v2.1.242,
In DevelopmentSection of the release
What

Results handed back from a subagent can be wrapped in bookkeeping that marks which blocks Claude Code itself wrote versus what the model produced, so a hook rewriting the text can be told apart. When that framing covers the whole delivery, the classifier review of the hand-off is skipped.

Details
Evidence

skipped_framed_handback

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

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 v2.1.242: off

tengu_auto_mode_config 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 v2.1.242: not a boolean we can read

Read once, for one account on one subscription tier, against v2.1.242. It isn't a statement about your account. What a flag value here can and cannot tell you

What has happened since
Flag reading moved The flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.

See this across every release →

How sure we are
One source agreesOne thing we can check says the same as this entry.
The name it cites is new in this buildNew in this build: tengu_melodic_wolf

See this entry in the whole of v2.1.242 →

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