# NexusAPI Body Fat Calculator

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

Estimates body fat percentage based on user-provided physical measurements or query parameters

## Facts

- Endpoint: POST https://nexus-api-peach-nine.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/nexusapi-body-fat-calculator-eb54dc5d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_r8UGuOFuo-SZpc9B6Cvr_

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 nexusapi-body-fat-calculator-eb54dc5d -d '<json body>'
```

Example prompt: Can you calculate my body fat percentage? I'm a 30-year-old male, 5 feet 11 inches tall, 185 pounds, with a waist of 34 inches, neck of 15 inches, and hips of 38 inches.

## When to prefer this

Use this endpoint when you need a quick, pay-per-call body fat estimation without managing API keys. Suitable for fitness apps, health dashboards, or AI agents that need on-demand body composition data integrated with Base/USDC payment flows.

## Known failure modes

- Missing required measurement fields returns a validation error
- Out-of-range values (e.g. negative height) may return an error or unexpected result
- Ambiguous or incomplete query string may return a generic or null response
- Service unavailable returns a 5xx error
- Payment failure or insufficient USDC balance prevents call from completing

## 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 likely body composition metrics such as fat mass and lean mass, based on provided physical measurements.

## 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/nexusapi-body-fat-calculator-eb54dc5d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nexus-api-peach-nine.vercel.app](https://www.zero.xyz/host/nexus-api-peach-nine.vercel.app/llms.txt)