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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.

← All of v2.1.238 Home All releases ←olderv2.1.237 v2.1.239newer→

Claude Code v2.1.238 20 Aug 2026

Undici socket errors reported as dropped connections

You'll notice

Useful2 Signal1

MCP

One more MCP socket failure now reads as a dropped connection rather than an unexplained error.

What

UND_ERR_SOCKET now joins the other connection-loss codes in the MCP error classifier, so those failures show a dropped-connection message instead of an unclassified error.

Evidence

UND_ERR_SOCKET

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

See this entry in the whole of v2.1.238 →