[BUG] Claude Code v2.0.29 throws Error 400 on Max Plan

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Trying to access claude code on Mac:
Claude Code v2.0.29
Sonnet 4.5 · Claude Max plan throws error 400:
I have tried 'Claude -r', tried to npm install again. Logout and login but logout isn't working either. It throws the same error 400.

What Should Happen?

Using 'claude' cmd on termianl should open Claude and be able to converse.

Error Messages/Logs

PI Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"Third-party apps now draw from your extra usage, not your plan limits.

Steps to Reproduce

In terminal type 'Claude'.
type any text, it will throw error 400

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.29

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_