[Release] anthropics/claude-code v2.1.123: v2.1.123

Claude Code v2.1.123 is a patch release that fixes a critical OAuth authentication bug. When the experimental betas feature flag was disabled via the `CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1` environment variable, OAuth authentication would enter a 401 retry loop, preventing successful login. This fix resolves the authentication failure and allows users with experimental features disabled to authenticate properly.

Key Points

• •OAuth authentication was failing with 401 errors when experimental betas were disabled
• •The issue manifested as a retry loop, preventing successful user authentication
• •Root cause was incompatibility between the `CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1` flag and OAuth flow
• •Fix ensures OAuth works correctly regardless of experimental beta feature flag status
• •Users should upgrade to v2.1.123 if experiencing authentication issues with experimental features disabled
• •This is a patch release (v2.1.x) indicating a bug fix rather than new features

Workflow Diagram

Concepts