Data and AI releases

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Claude Agent SDK 0.2.179

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Claude Agent SDK version 0.2.179 is now available via PyPI.

AI agents

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Also shipped Nov 6, 2026Anthropic in November 2026 →

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Claude Agent SDK 0.2.177

New Features on_failure option for HookMatcher: Control what happens when a hook callback fails. Set on_failure="block" to block the action when a callback raises, returns None, or returns a value the CLI rejects. Defaults to "continue" (treat failure as no decision).

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Claude Agent SDK 0.2.175

The Claude Agent SDK has been updated to version 0.2.175, which includes an updated bundled Claude CLI and an increased PyPI project size limit.

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Claude Agent SDK 0.2.170

Claude Agent SDK 0.2.170 fixes an issue where parallel tool calls were missing from session messages and updates the bundled CLI.

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