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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 v2.1.239 ·

API error codes are preserved through stored messages and failure records

API error codes now survive being stored and reappear in failure records.

Under the hood Internal Changes
JSON All of v2.1.239
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.239,
Internal ChangesSection of the release
What

An assistant message's API error code now survives deserialisation as apiError, is passed along by the failure-marking helper into the API-failure record, and a new error branch produces it for one specific error constant with a matching log line. Unconditional.

Evidence

...(t.api_error !== void 0 && { apiError: t.api_error })

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

See this entry in the whole of v2.1.239 →

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