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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.308 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeReleasesv2.1.251entry #255

Claude Code v2.1.251 ·

Sandbox shell errors are merged into one readable message

Repeated sandbox shell errors collapse into one readable message.

You'll notice Improvements
JSON All of v2.1.251
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SandboxArea: what it touches
ImprovementsKind: in v2.1.251,
ImprovementsSection of the release
What

When a shell grant is active and several errors all carry the same sandbox.failIfUnavailable=false advice, that boilerplate is stripped and the errors are merged into a single message instead of being listed raw.

Details
  • Applies only when a shell grant is in effect.
Evidence

Set sandbox.failIfUnavailable=false

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

Read from
Names in the bundlesandbox.failIfUnavailable

See this entry in the whole of v2.1.251 →

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