[Bug] Anthropic API Error: Opus 5.5 Safeguards Incorrectly Flagging Non-Cybersecurity Work

Status Open
Reported on v2.1.283
Maintainer reply None cached
Activity 1 comment · opened Sep 27, 2026

Bug Description
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 on an Opus model: 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. 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/8106465 Details: [cyber] Request ID: req_011CfTN55xg76fJrCmiVT2M6 Message ID: msg_011CfTN56KmD5gA6Acok77j7 why is it giving me this I am working on a hackathon project with my partner and we have gotten so far for the vultr challenge and all of a sudden its giving these errors? it was working will with opus 4.8 but for this hackathon i switched to opus 5.5 and it didn't work

Environment Info

  • Platform: darwin
  • Terminal: Apple_Terminal
  • Version: 2.1.283
  • Feedback ID: a739e812-0b71-4986-ab67-829a87dabf8f

Errors

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