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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 v2.1.248 27 Aug 2026

Internal bug-hunter runs set one more environment variable

Under the hood

Useful1 Signal2

Elsewhere

Internal bug-hunter subprocesses always get one extra environment variable set.

What

Subprocesses started by the internal bug-hunter tooling now always get AUTOPATCH_ENABLE_ASIMOV=1, alongside the existing dry-run setting. The other bug-hunter switches remain driven by config.

Evidence

AUTOPATCH_ENABLE_ASIMOV

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

See this entry in the whole of v2.1.248 →