v2.1.123

Source: Anthropic Claude Code Date: 2026-04-29 URL: https://github.com/anthropics/claude-code/releases/tag/v2.1.123

Summary

Claude Code v2.1.123 is a single-fix release: it resolves an OAuth authentication failure that caused a 401 retry loop when CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1 was set. No other changes.

Implications

• Narrow fix targeting users who explicitly disable experimental beta features — the retry loop on 401 would have caused agent sessions to hang or fail silently in environments with that flag set.
• Feeds the Claude Code reliability thread: the flag interaction suggests the OAuth refresh path had an untested code branch when betas are disabled, a class of integration gap worth watching as the flag surface grows.