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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 v2.1.227 ·

Command clamps deny rather than fall open

If a clamped agent's permission check crashes, the shell command is denied rather than allowed.

You'll notice New Features
JSON All of v2.1.227
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SubagentsArea: what it touches
New FeaturesKind: in v2.1.227,
New FeaturesSection of the release
What

If the permission check for a clamped agent throws, the Bash call is denied, not run, with the reason "bashCommandClamp fail-closed: permission check crashed". Shell surfaces the clamp cannot inspect, including PowerShell, are denied outright with a message telling the model to use the clamped Bash forms instead.

Details
Evidence

tengu_bash_command_clamp_denied

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

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