Anthropic API Issues Mysterious 54-Minute Bans Without Explanation

A developer reported a new Anthropic API error: their account received a 403 permissionerror ban on claude-opus-5-5 that lifted automatically after just 54 minutes with no explanation, possibly a new ban mechanism or a false positive.

2026-11-11 ~ 2026-11-11 · 2 related posts

• Developer flags odd Anthropic API suspension: access blocked for just 54 minutes — Sauers_ · 2026-11-11
• New Anthropic API error bans users for exactly 54 minutes, apparently since yesterday — Sauers_ · 2026-11-11