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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.221 ·

Sandbox read config is cached and no longer fatal on failure

Sandbox file-read config is cached and no longer crashes when the native lookup fails.

You'll notice Improvements
JSON All of v2.1.221
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
SandboxArea: what it touches
ImprovementsKind: in v2.1.221,
ImprovementsSection of the release
What

getFsReadConfig memoises its result per config object, and a throw from the native call is logged and recovered from rather than propagated.

Details
  • result is cached keyed on the config object, so repeated calls skip the native work
  • on throw, deny/allow lists are synthesised from the raw filesystem deny lists plus credential file paths
  • the failure is logged rather than surfaced to the caller
Evidence

[sandbox] getFsReadConfig threw; falling back to raw deny lists:

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

See this entry in the whole of v2.1.221 →

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