[Bug] Anthropic API Error: Opus 5.5 safeguards flagged session unexpectedly
Status Fixed / completed
Reported on v2.1.289
Maintainer reply None cached
Activity 0 comments · opened Oct 5, 2026 · closed Oct 5, 2026
Bug Description
prompt is showing this error API Error: Opus 5.5's safeguards flagged this session (https://www.anthropic.com/legal/aup). You may be seeing this for the first time: Opus 5.5 is more capable and has stronger safeguards as a result,
which can sometimes flag non-cybersecurity work. We're improving these safeguards to reduce the amount of incorrectly flagged messages. Claude Code can't respond to your last message with Opus 5.5.
how to get rid of it?
Environment Info
- Platform: darwin
- Terminal: Apple_Terminal
- Version: 2.1.289
- Feedback ID: ee075e38-8e0a-465a-a210-780a1ef6398c