# OmniAPI Body Fat Calculator

> OmniAPI Body Fat Calculator is a paid API for AI agents from omni-api-cyan.vercel.app, paid per call via x402, $0.132459/call, status unknown (last checked 2026-09-14).

Calculates estimated body fat percentage from user-provided physical measurements or health data

## Facts

- Endpoint: POST https://omni-api-cyan.vercel.app/api/health/body-fat
- Price: $0.132459/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/omniapi-body-fat-calculator-1ee2090a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NBcu-U7RrTljTaG0EYIIM

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability omniapi-body-fat-calculator-1ee2090a -d '<json body>'
```

Example prompt: Can you calculate my body fat percentage? I'm a 30-year-old male, 5 feet 10 inches tall, 185 pounds, with a waist measurement of 34 inches.

## When to prefer this

Use this endpoint when you need a quick, pay-per-call body fat percentage estimation without setting up a dedicated health API account. It is suitable for fitness apps, wellness agents, or personal health tracking workflows that occasionally need body composition calculations and prefer USDC micropayment billing over subscription models.

## Known failure modes

- Missing required query/input field returns validation error
- Malformed or non-numeric measurement values may cause computation errors
- Out-of-range values (e.g. negative weight) may return error or implausible results
- Payment failure via x402 results in 402 response before computation occurs

## How this service works

444 endpoints across 9+ chains. Crypto, AI, Social, Finance, Weather, Tools. Pay per call in USDC via x402 with 4 facilitators: Dexter, Meridian, FluxA, GoPlausible.

## Output

Returns an estimated body fat percentage and likely a categorical assessment (e.g. essential fat, athletic, fitness, average, obese range) based on the input physical measurements provided.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "input": {
   "type": "string",
   "description": "Input data for the endpoint"
  },
  "query": {
   "type": "string",
   "description": "Search query or input text"
  },
  "params": {
   "type": "object",
   "description": "Additional parameters"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/omniapi-body-fat-calculator-1ee2090a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from omni-api-cyan.vercel.app](https://www.zero.xyz/host/omni-api-cyan.vercel.app/llms.txt)