2 September 2026
Claude now directs users to external harm reduction websites
First reported
Simon Willison ran this on .
- Anthropic's Claude chatbot was updated to reference three external websites (dancesafe.org, tripsit.me, psychonautwiki.org) in its system prompt, the underlying instructions that guide its responses.
- These sites provide harm reduction information about drug interactions and safety, a first for Claude to officially point users outside Anthropic's own domains.
- The change reflects a shift toward acknowledging external resources as authoritative on sensitive health and safety topics rather than handling all guidance internally.
How it was covered
Simon WillisonDaily notes and links
The new system prompt is the first to include URLs not on Anthropic domains, directing users to dancesafe.org, tripsit.me, and psychonautwiki.org for harm-reduction information about dangerous drug interactions.