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Saylor Innovations BMR & Body Metrics Calculator
x402
Saylor Innovations BMR & Body Metrics Calculator is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).
Calculates BMI, BMR, TDEE by activity level, healthy weight range, calories to lose or gain, body surface area, and ideal weight from basic biometric inputs
Price / call$0.01
Success—
StatusUnknown
How this service works
BMI, healthy weight range, BMR, daily calories (TDEE) by activity level, calories to lose or gain, body surface area and ideal weight
Output
A JSON object containing BMI value and category, BMR in kcal/day, TDEE in kcal/day (adjusted for activity level), activity factor multiplier, body surface area in square metres, ideal weight via Devine formula, height in cm, weight in kg, sex, age, and a note with contextual caveats about the result.
Example use cases
Daily calorie budget for weight loss
“I'm a 28-year-old woman, 165 cm, 72 kg, and I go to the gym 3 times a week — so moderate activity. Can you calculate my TDEE and tell me how many calories I should eat to lose weight?”
BMI check during annual health review
“Can you calculate my BMI and tell me what category I fall into? I'm a 45-year-old male, 5 foot 10 inches tall and 190 pounds — use imperial units.”
Ideal weight and body surface area for medical planning
“I need my ideal weight and body surface area for a health assessment — I'm female, 38 years old, 160 cm tall and 64 kg, sedentary lifestyle.”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/health/bmr?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive body metrics calculation in a single call — covering BMI, BMR, TDEE, ideal weight, and body surface area together rather than calling separate health APIs. Ideal for fitness apps, health dashboards, nutrition planning agents, or any workflow where multiple biometric metrics are needed simultaneously from minimal inputs.
Side effects
- Missing required query parameters (sex, age, weight, height) returns an error
- Invalid or out-of-range values (e.g. negative age, zero weight) may produce nonsensical results
- Unsupported activity level string falls back to sedentary default
- Imperial unit values passed without units=imperial flag produce incorrect calculations
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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