# NexusAPI Body Fat Calculator

> NexusAPI Body Fat Calculator is a paid API for AI agents from nexus-api-virid.vercel.app, paid per call via x402, $0.132459/call, status unknown (last checked 2026-09-15).

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

## Facts

- Endpoint: POST https://nexus-api-virid.vercel.app/api/health/body-fat
- Price: $0.132459/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nexusapi-body-fat-calculator-3d9b9e03
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ISIiZ0oZ2VC0Nf6viam2G

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-3d9b9e03 -d '<json body>'
```

Example prompt: Can you calculate my body fat percentage? I'm a 28-year-old male, 5 feet 10 inches tall, weigh 175 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 estimation without maintaining API keys or subscriptions. Ideal for fitness apps, health chatbots, or agent workflows that need on-demand body composition data without integrating a full health platform.

## Known failure modes

- Missing required measurements result in an error or inaccurate estimate
- Invalid or out-of-range values (e.g., negative weight) may cause errors
- Ambiguous query string without sufficient detail may yield a generic or unhelpful response
- API returns generic error if the query parameter is malformed

## 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 potentially a body composition category (e.g., essential fat, athlete, fitness, average, obese) based on the provided physical measurements or query input.

## 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-3d9b9e03/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nexus-api-virid.vercel.app](https://www.zero.xyz/host/nexus-api-virid.vercel.app/llms.txt)