LaunchDevelopersSeptember 18, 2026

Claude Code 2.1.276 fixes 400 errors behind proxies

The patch resolves a 2.1.275 regression that made every request fail with a 400 "Input tag 'advisor_20260301'" error when ANTHROPIC_BASE_URL points at a proxy or gateway. It is the release's only CLI change.

4 sources

More stories today

Open the live feed