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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.267 ·

Session ID derivation can now use a stable address scheme, behind tengu_session_stable_address

A new stable-address scheme for session IDs is gated behind tengu_session_stable_address

TierNothing to try yethow much it should matter to you
Useful3my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaSessionswhat it touches
KindIn Developmentin v2.1.267,
Nothing to try yet No documentation found

A new stable-address scheme for session IDs is gated behind tengu_session_stable_address

What

A new internal check reads the tengu_session_stable_address setting and uses it in several places that determine session IDs and derived secrets, such as choosing whether to hash a value or generate random bytes, and whether a 'derived' source should still be treated as valid.

Why

This lays groundwork for an alternate, more stable way of deriving session identifiers, without yet describing what changes for users when it's active.

Read from
Names in the bundletengu_session_stable_address
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtThe finding doesn't say what a stable address scheme changes about session behavior for users, and the tengu_session_stable_address gate is…
The name it cites is new in this buildNew in this build: tengu_session_stable_address

See this entry in the whole of v2.1.267 →

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