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Sweep 12 Nov 2026 · 23:00Z Build v2.1.323 540 read Stable v2.1.311 Latest v2.1.323 Next v2.1.323 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.323 ·

Clearer errors when a tool failed to load or browser input is malformed

Claude now gets a retry message when a tool's load check fails, and browser tool inputs holding quoted JSON or \uXXXX escapes are refused

You'll notice Improvements
JSON All of v2.1.323
You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Tool CallsArea: what it touches
ImprovementsKind: in v2.1.323,
ImprovementsSection of the release
What

Two new input errors tell Claude what went wrong with a tool call (a request from Claude to use a tool):

  • When the check that a tool was loaded fails, the tool does not run and Claude is told to call it once more.
  • Browser tool inputs are now refused when a field holds JSON text in quotes or a \uXXXX escape (a coded form of a character).
Why

Claude gets precise guidance on how to retry instead of a vague failure, which should mean fewer repeated broken browser calls.

See this entry in the whole of v2.1.323 →

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