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Sweep 08 Oct 2026 · 18:53Z Build v2.1.295 516 read Stable v2.1.286 Latest v2.1.295 Next v2.1.295 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.290 ·

Sandboxed commands now wait for the sandbox to finish setting up

Claude Code now makes sure the sandbox is ready before running a command in it, and skips wrapping when no sandbox configuration exists

You'll notice Bug Fixes
JSON All of v2.1.290
You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
SandboxArea: what it touches
Bug FixesKind: in v2.1.290,
Bug FixesSection of the release

Unclear It is not shown what Claude Code does with the command when there is no sandbox configuration and it skips wrapping.

What

The sandbox is an isolated environment that limits what a command run by Claude Code can touch. To run a command in it, Claude Code wraps the command in sandbox restrictions. Before wrapping a command, Claude Code now waits for the sandbox to finish starting up. Previously it wrapped the command straight away.

If no sandbox configuration exists at all, Claude Code no longer wraps the command.

Why

A command could previously be wrapped before the sandbox was ready. Waiting for setup to finish stops that from happening.

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 doubtIt is not shown what Claude Code does with the command when there is no sandbox configuration and it skips wrapping.

See this entry in the whole of v2.1.290 →

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