# Body Metrics

BMI, calories, and protein — with the uncertainty shown.

**Why delegate it:** Two failure modes at once. A bare number is ambiguous — "170" is a height in centimetres or a weight in pounds — and a wrong unit yields a plausible BMI that is off by a factor of two. And the standard energy formulas disagree by hundreds of calories, so any single figure is false precision.

Site: https://body-metrics-tau.vercel.app

## Tools

### `body_metrics` — BMI, calories, and protein with error bounds

Compute BMI, energy expenditure, and protein targets from height and weight. Height and weight MUST carry units — a bare number is REFUSED rather than guessed, because a unit mix-up produces a plausible-looking answer that is badly wrong. Returns every standard BMR formula plus the spread between them, because the spread IS the precision of the estimate. Do not relay a single calorie figure as though it were exact. Not medical advice, and the response says so in its payload.

Direct endpoint: `https://body-metrics-tau.vercel.app/api/v1/metrics`

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Via the aggregator: `https://gumballtools.com/api/mcp`
Direct: `https://body-metrics-tau.vercel.app/api/mcp`