Claude Code 2.1.276 1changes Fix every request failing through a proxy or gateway after 2.1.275. CHANGELOG ↗ ⌁ Bug fixes 1 Fix requests through proxies and gateways Fixed every request failing with 400 … Input tag 'advisor_20260301' when ANTHROPIC_BASE_URL points at a proxy or gateway (2.1.275 regression) ＋