[Bug] Anthropic API Error: Safeguards falsely flagging legitimate game library code

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

Bug Description
I was just trying to code a library for AAA games- the next big thing in rust. Nothing wrong with it. I had previously been working on a cybersecurity tool. I told Claude to focus on Neon (the game lib) and every time it would read a file or run a command "API Error: Opus 5 (1M context)'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." same thing happened with Claude Fable 5.1 too.

Environment Info

  • Platform: darwin
  • Terminal: ghostty
  • Version: 2.1.258
  • Feedback ID: 7f8b426a-8805-4454-bada-41224a0fb162

Errors

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