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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 v2.1.124

DISABLE_GROWTHBOOK environment variable

What

A new environment variable that disables GrowthBook-driven server-side feature flagging.

Usage
DISABLE_GROWTHBOOK=1 claude
Details
  • Listed alongside the other DISABLE_* opt-outs (DISABLE_TELEMETRY, DISABLE_INSTALLATION_CHECKS, DISABLE_COST_WARNINGS, etc.) and is automatically forwarded to subprocesses.
Evidence

Environment passthrough lists (search for "DISABLE_GROWTHBOOK").

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

See this entry in the whole of v2.1.124 →