Health Calculator Skill
SkillDev toolsUse this skill when the user provides their height, weight, age, and gender and asks about their BMI, ideal weight, daily calorie needs (TDEE), or waist-to-height ratio. Also triggered by questions like "am I overweight?", "how many calories should I eat?", or "what is my healthy weight range?". Applies to advisor_agent and clinic_agent.
Available today. Use it from your connected AI after setup.
No other account needed.
Connect ahel once, and every AI you use reads what you have installed.
Then ask your AI: use the Health Calculator Skill skill
What this skill tells your AI
The instructions your AI receives, as published by wananing/smart-health-assistant in backend/skills/health_calculator/SKILL.md and read by ahel’s review.
Computes body-metric indicators from user-provided measurements using validated clinical formulas. All calculations are statistical estimates and must be accompanied by the embedded disclaimer.
Capabilities
| Metric | Formula | Output |
|---|---|---|
| BMI | weight_kg / height_m² | Value + WHO/Asian category |
| Ideal weight | Devine formula | kg + difference from current |
| BMR | Mifflin-St Jeor | kcal/day at rest |
| TDEE | BMR × activity factor | kcal/day adjusted for lifestyle |
| Waist-height ratio | waist_cm / height_cm | ratio + cardiovascular risk tier |
Required Inputs
height_cm— height in centimetres (50–300)weight_kg— weight in kilograms (1–500)age— age in yearsgender—"male"or"female"
Optional Inputs
activity_level— one ofsedentary | light | moderate | active | very_activewaist_cm— waist circumference for WHR cardiovascular risk (addswhr_riskfield)
Output Notes
- BMI categories use Asian cutpoints (overweight ≥24.0, obese ≥28.0)
- Always display the
disclaimerfield alongside results - If
weight_diff_kgis positive the user should lose weight; negative means gain
Signals
- GitHub stars
- 21
- Forks
- 4
- Last commit
- Aug 2026
Advanced
- Catalog kind
- skill
- Gateway key
health-calculator- Source
- github.com/wananing/smart-health-assistant