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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.319 ·

Setting to drop a paused tool call whose tool is gone on resume

Resumed headless sessions now keep a paused tool call whose tool has vanished; CLAUDE_CODE_DROP_UNAVAILABLE_DEFERRED_TOOL=1 drops it instead

Use it now Notable New Features
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3Signal: worth watching, 1 to 5
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New FeaturesKind: in v2.1.319,
What probably matters to youSection of the release
What

This applies to headless sessions, meaning Claude Code run without its interactive screen, for example from a script or the SDK. A deferred tool call is one that was paused partway, waiting to finish later. If you resume such a session and the tool the call needs is no longer available, Claude Code now keeps the call and notes in the session that the tool is unavailable.

To drop the call and carry on instead, set CLAUDE_CODE_DROP_UNAVAILABLE_DEFERRED_TOOL=1 and resume with a prompt.

The call is kept only for sessions that are not connected through a remote connection.

Why

A paused call is no longer lost silently when its tool disappears. If you would rather move on, the environment variable gives you a way to do so.

See this entry in the whole of v2.1.319 →

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