[Bug] Anthropic API Error: Messages consistently flagged across all models

Status Open
Reported on v2.1.258
Maintainer reply None cached
Activity 0 comments · opened Sep 2, 2026

Bug Description
On every message over Claude Code, I am getting flagged. None of the models are working. None of the Fable or Opus models are working. I am just throwing on the Haiku Even after paying for max subscription and more API usage, I am not getting what I have paid for.

Environment Info

  • Platform: darwin
  • Terminal: Apple_Terminal
  • Version: 2.1.258
  • Feedback ID: 09cb949c-d522-4572-8f3a-d2788e1cb3ce

Errors

[API Error: Fable 5.1's safeguards flagged this message (https://www.anthropic.com/legal/aup). Our intentionally broad safeguards allow us to deliver more capabilities faster, but can sometimes flag 
  legitimate coding, cybersecurity, and biology tasks. Claude Code can't respond to this message with Fable 5.1.

  Double press esc to edit your last message, or try a different model with /model.

  Send feedback with /feedback or learn more: https://support.claude.com/en/articles/15363606                 ]

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