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Sweep 03 Oct 2026 · 20:28Z Build v2.1.289 510 read Stable v2.1.285 Latest v2.1.289 Next v2.1.289 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.289 ·

Plugin client error messages drop repeated prefixes and fall back when empty

Error text from a plugin client now has its leading labels removed, and a standard message is shown when nothing is left

You'll notice Improvements
JSON All of v2.1.289
You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Plugin UIArea: what it touches
ImprovementsKind: in v2.1.289,
ImprovementsSection of the release
What

The formatter for error messages coming from a client has changed. Before, it added a Client ...: label to the front of the text. It now removes two kinds of leading label from the text, including that Client ...: one. If nothing is left after that, it shows a fixed fallback message instead of an empty one.

Why

This changes how error text from a client is shown, so the same label should not appear twice and an error is never displayed blank.

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 doubtThe exact old wording could not be read cleanly, so the precise before and after behaviour is unclear.
Anthropic's release notes agreeFixed a mod's Client that fails while drawn taking down everything the mod drew around it; it now fails alone and raises ui.fault

See this entry in the whole of v2.1.289 →

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