Claude Code 2.1.276

UpdateSep 18, 2026VerifiedAdded Sep 22, 2026

What's changed Fixed every request failing with 400 … Input tag 'advisor_20260301' when ANTHROPIC_BASE_URL points at a proxy or gateway (2.1.275 regression)

LLMs Governance Coding agents

Read Anthropic's release notes

https://github.com/anthropics/claude-code/releases/tag/v2.1.276

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