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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 v2.1.228 ·

Connection errors show the underlying cause

Connection failures now show the real underlying error text.

You'll notice Bug Fixes
JSON All of v2.1.228
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
InternalsArea: what it touches
Bug FixesKind: in v2.1.228,
Bug FixesSection of the release
What

Generic connection failures now surface the text of the real underlying error instead of a bare, uninformative message.

Details
  • New helpers walk up to five levels of nested error causes to find the first informative message.
  • Errno-shaped codes are recognised: anything matching E followed by capitals or digits, plus UNKNOWN and text starting with "Unknown system error".
Evidence

Unknown system error

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

See this entry in the whole of v2.1.228 →

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