Friday, January 30, 2026
Claude Code Beta Fix
Users are discussing a fix for a beta header validation error in Claude Code version 2.1.25 when using Bedrock through gateways like LiteLLM, requiring setting the environment variable `CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1` to avoid the error.
Claude Code 2.1.25 ・BedrockおよびVertex AIのゲートウェイユーザー向けにbetaヘッダー検証エラーを修正。`CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1`を設定することでエラーを回避。 > ・Fixed beta header validation error for gateway users on Bedrock and Vertex, ensuring CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1 avoids the error https://t.co/ZcWRSvtyDt
Claude CodeでLiteLLM等Gateway経由のBedrock使うときはCLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1入れてねという公式？のお触れが出ていたのか https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md#2125… > Fixed beta header validation error for gateway users on Bedrock and Vertex, ensuring [Links: https://t.co/xnZalfSX19]