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Sweep 29 Sep 2026 · 18:10Z Build v2.1.285 506 read Stable v2.1.280 Latest v2.1.285 Next v2.1.285 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.285 ·

Startup telemetry notes early feature-setting fetches on a warm wake

Startup telemetry for waits on remote feature settings now records whether the fetch started early on a warm wake

Under the hood Internal Changes
JSON All of v2.1.285
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
StartupArea: what it touches
Internal ChangesKind: in v2.1.285,
Internal ChangesSection of the release
What

The tengu_startup_flag_fetch_wait telemetry event records how long Claude Code waits for remote feature settings at startup. It gains a warm_wake_early_fetch field. The data Claude Code prepares at startup also now notes whether a settings fetch made while Claude Code relaunched had finished.

This is tied to a remote gate, tengu_cobalt_thicket, which the code treats as on when the server sends nothing. The flag server has returned off for this site's account and for an anonymous check, in readings taken before this release.

Why

This adds detail to the telemetry on the startup settings fetch. It does not change what you see.

Read from
Feature flag
tengu_cobalt_thicket Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.285: 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 v2.1.285. 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 doubtIt is not clear what the tengu_cobalt_thicket gate itself controls.

See this entry in the whole of v2.1.285 →

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