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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.229

Directory sync can be turned off with an environment variable

Use it now
Useful4 Signal3
File Sync Notable not in their notes

You can turn off background directory syncing by setting CLAUDE_CODE_DISABLE_DIR_SYNC.

CLAUDE_CODE_DISABLE_DIR_SYNC
What

The background worker that syncs directory contents now starts only when a decision helper allows it, and CLAUDE_CODE_DISABLE_DIR_SYNC feeds that decision alongside the entrypoint being used. When it is skipped for that reason, a telemetry line records it.

Evidence

dir_sync_worker_disabled

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.229 →