SALUS Zero

SALUS Zero is a clinical training simulator and bedside decision companion for medicine where nothing is available. Most of the world's children are treated with no CT, no ultrasound, no surgeon — only a clock and one doctor. It serves that world through two doors. The scored night: Claude narrates a deteriorating pediatric case while code owns everything that must be true — the stage physiology, every vital and lab, and a 0–100 debrief computed in auditable arithmetic, never by the model. Its signature constraint: no CT — you decide with what the clinic actually has. The consult companion: a narrow, reference-grounded appendicitis assistant for a clinician facing a real child — it starts from your inventory, computes PAS and Alvarado in code, forces the mimics into every assessment, and refuses to prescribe doses. Appendicitis is only the pilot: any domain, surgical or medical, plugs in as expert-authored data. A chatbot is built to agree; this engine is built to push back. In its first days, six residents, an associate professor, and a district-hospital general practitioner ran it. Built solo in six days with Claude Code by a practicing pediatric surgery resident. Open source, AGPL-3.0, live at saluszero.com.