AI that adapts to the human, not just the prompt.
B2B API that gives any LLM real-time awareness of human stress, tone, and physiological state.
The Problem
AI systems respond to text, not to the person behind it.
Large language models and conversational AI systems process syntax and semantics with remarkable sophistication. But they have zero access to the physiological state of the person interacting with them. The same words from a calm user and a distressed user produce identical responses.
The Engagement Layer
Real-time physiological awareness for AI systems.
Nefesh translates live biometric signals into structured state classifications — Calm, Relaxed, Focused, Stressed, Acute Stress — delivered via API. AI systems can adapt tone, pacing, escalation logic, and intervention timing based on the user’s actual physiological state.
The Impact
When AI understands physiology, users stay longer.
Nefesh-powered systems create a fundamentally different interaction quality.
Start integrating today.
1,000 API calls free. No credit card. Scale to 50,000 for $25/month.