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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 v2.1.238 ·

Worker client drops duplicate events and can treat proxy 403s as transient

The background worker now drops duplicate telemetry events within an upload and logs how many.

Under the hood Internal Changes
JSON All of v2.1.238
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
TelemetryArea: what it touches
Internal ChangesKind: in v2.1.238,
Internal ChangesSection of the release
What

The background worker's event batcher now discards events repeating a uuid within a single upload and logs how many it dropped.

Details
  • HTTP failures can carry a nonOriginRefusal marker, and the heartbeat streak reset skips those statuses.
  • A new constructor option nonOrigin403Transient decides whether such a 403 is retried; it defaults to false in this build.
  • The worker epoch is now read through a helper instead of parsing CLAUDE_CODE_WORKER_EPOCH inline.
Evidence

repeated-uuid durable event(s) from one /worker/events POST

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

See this entry in the whole of v2.1.238 →

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