# ApexAPI Body Fat Calculator

> ApexAPI Body Fat Calculator is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.053455/call, status unknown (last checked 2026-09-14).

Calculates estimated body fat percentage based on user-provided physical measurements or query input

## Facts

- Endpoint: POST https://apex-api-gamma.vercel.app/api/health/body-fat
- Price: $0.053455/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apexapi-body-fat-calculator-d63bc636
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gdRxx8hWkKl5ijT0P8w6g

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 apexapi-body-fat-calculator-d63bc636 -d '<json body>'
```

Example prompt: Can you estimate my body fat percentage? I'm a 32-year-old male, 5 foot 11 inches tall, weigh 185 pounds, and my waist is about 34 inches.

## When to prefer this

Use this endpoint when you need a quick, pay-per-call body fat percentage estimate without managing API keys. Prefer it when integrating health and fitness calculations into an agent workflow that already uses USDC micropayments on Base.

## Known failure modes

- Missing or incomplete measurement data returns an error or low-quality estimate
- Invalid query string format may result in a parsing error
- Ambiguous input (e.g. missing gender or age) may reduce accuracy of the estimate
- Service unavailable or payment failure returns a 402 or 5xx error

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns an estimated body fat percentage and possibly a body composition category (e.g. athletic, average, obese) based on the provided physical measurements or query.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apexapi-body-fat-calculator-d63bc636/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apex-api-gamma.vercel.app](https://www.zero.xyz/host/apex-api-gamma.vercel.app/llms.txt)