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

Claude Code v1.0.109 ·

Asynchronous Hook Execution

Entry
JSON All of v1.0.109
EntryKind: in v1.0.109,
ChangesSection of the release

What: Hooks can now run asynchronously in the background, allowing long-running operations without blocking the main conversation How to use:

{
  "async": true,
  "asyncTimeout": 30000
}

Details:

  • Background process management for async hooks
  • Configurable timeout settings (default 15 seconds)
  • Automatic response collection and delivery
  • Process cleanup when hooks complete or timeout
  • Evidence: D$A() at line 362558, s10() at line 362783, U$A() at line 362581

See this entry in the whole of v1.0.109 →

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