[BUG] Sonnet and Opus can't run any commands; always receiving "Classifier unavailable"

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?

Even on read-only commands (such as ls, cat and tree), it can't run any commands. Tried with Sonnet 5 and Opus 4.8, both on terminal and VS Code extension. It was running for over 3 hours and nothing happened due to classifier unavailability. Tried all modes ("auto", "edit" and "plan).

What Should Happen?

Commands should run normally, for the agent to explore and understand the project.

Error Messages/Logs

Steps to Reproduce

1. Open your project on VS Code or Terminal
2. Prompt anything to Claude
3. Once it tries to run any commands, it will fail saying that the classifier is unavailable

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.201

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_