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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 v2.1.275 ·

New hidden command for a startup promotional announcement

New state fields track startup promo announcements and back a hidden command to reopen the offer page, gated behind tengu_swift_lynx

TierNothing to try yethow much it should matter to you
Useful2my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaPromotionswhat it touches
KindIn Developmentin v2.1.275,
Group of 2 Nothing to try yet No documentation found

New state fields track startup promo announcements and back a hidden command to reopen the offer page, gated behind tengu_swift_lynx

What

New per-session/global state fields, promoStartupConfig, promoStartupConfigParse, promoStartupLoginsSeen, and promoStartupLoginEnded, along with an announcementSlotReleased flag, track a startup promotional announcement and end it once a tracked number of logins has occurred. These fields back a new hidden local command that opens the page for the offer shown at startup. The command only activates when a remote-config value under the tengu_swift_lynx gate is non-null.

Why

This lets Claude Code show a startup promotional offer for a limited number of logins and gives users a way to revisit that offer's page, while keeping the feature off unless explicitly configured remotely.

Read from
Names in the bundletengu_swift_lynx
Feature flag
tengu_swift_lynx 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 v2.1.275: not a boolean we can read

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 v2.1.275. It isn't a statement about your account. What a flag value here can and cannot tell you

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 doubtNothing has been read about the tengu_swift_lynx gate, so whether or how it is switched on for any account is unknown.
The name it cites is new in this buildNew in this build: tengu_swift_lynx

See this entry in the whole of v2.1.275 →

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