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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

Fatal exits record why they happened

Under the hood
Useful2 Signal2
Diagnostics

Fatal exits now record a reason so different crash paths can be told apart.

What

The helper that terminates the process on a fatal error now takes a reason, defaulting to a generic CLI error, so different failure paths can be told apart in telemetry.

Evidence

cli_error

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 v2.1.248 →