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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 v2.1.227 Home All releases ←olderv2.1.226 v2.1.228newer→
Claude Code v2.1.227

Connection errors say what actually went wrong

You'll notice
Useful4 Signal1
Error Messages

Connection errors now name the real problem: DNS, refused, unreachable, or a proxy tunnel failure.

What

"Unable to connect to API (CODE)" is replaced by distinct messages per socket, DNS and proxy error: dropped connections, refused connections with a firewall or proxy hint, unreachable hosts, no route to host, and failed proxy tunnels. Unrecognised codes still get the old generic wording.

Evidence

check your connection or VPN (

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 v2.1.227 →