[Bug] Anthropic API Error: Message flagged by safety system with reasoning_extraction error
Status Open
Reported on v2.1.251
Maintainer reply None cached
Activity 0 comments · opened Aug 31, 2026
Bug Description
I am getting an API Error now and this entire session now won't work... It's pretty frustrating since I wasn't doing anything malicious: API Error: Fable 5's safeguards flagged this message (https://www.anthropic.com/legal/aup). This sometimes happens with safe, normal conversations. Claude Code can't respond to this message with Fable 5.
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
Details: [reasoning_extraction]
Environment Info
- Platform: darwin
- Terminal: xterm-256color
- Version: 2.1.251
- Feedback ID: 00240be9-f620-4091-8f7b-a679b7117f19
Errors
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