[Bug] Anthropic API Error: Inconsistent false positive policy violations on legitimate addiction-recovery educational content

Bug Description
We publish addictionhelp.com, an addiction-recovery education site (clinical/ educational content on alcohol, drug, and behavioral addictions). On June 11–12, 2026, Claude Code began returning "appears to violate our Usage Policy" on routine editorial work: rewriting pages about alcoholic liver disease, Wernicke-Korsakoff syndrome, naltrexone, GLP-1 medications for alcohol use disorder, and similar clinical topics. Identical parallel requests passed and failed inconsistently (9 of 11 page rewrites passed, 2 blocked). Eventually plain conversational messages ("What do I do next?") were blocked in that session. Blocked request IDs (UTC): req_011CbxVEPJWXCAHiFgDke6yt (06-12 01:20) req_011CbyS4hXFcZeSkzMUb58vQ (13:20) req_011CbxXyY2orCpPnF3wqnbD7 (01:56) req_011CbyWF2Yju23LAsD5e7qit (14:15) req_011CbxYKpRM68Yp71yRXKWbA (02:01) req_011CbyWdkmbhFKGqzpLzqoXA (14:20) req_011CbxkopKKxVN21i57c5sMe (04:45) This is harm-reduction / health-education content. Requesting review of the false positives so our account history reflects that.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.168
• Feedback ID: 6056403a-1ed7-4c1d-b248-59e9200344d9

Errors

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