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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

Claude Code v2.1.248 ·

API key verification is now a shared store with a generation counter

API key verification is shared and a slow check can no longer overwrite a newer result.

Under the hood Internal Changes
JSON All of v2.1.248
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
AuthArea: what it touches
Internal ChangesKind: in v2.1.248,
Internal ChangesSection of the release
What

Key verification moved from a per-component hook to a single shared object, with a counter so a slow verification cannot overwrite a newer result. Telemetry is unchanged, still reporting helper failure, missing, invalid and network error outcomes.

Evidence

apikeyhelper_failed

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

See this entry in the whole of v2.1.248 →

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