# ApexAPI BMI Calculator

> ApexAPI BMI Calculator is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.068968/call, status unknown (last checked 2026-10-11).

Calculates Body Mass Index (BMI) given weight and height inputs, returning BMI value and health category classification

## Facts

- Endpoint: POST https://apex-api-gamma.vercel.app/api/health/bmi?utm_source=zero.xyz
- Price: $0.068968/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apexapi-bmi-calculator-1bbd4c5b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RJzb0bHQKvVm9cxXxTUZj

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-bmi-calculator-1bbd4c5b -d '<json body>'
```

Example prompt: Can you calculate my BMI? I'm 5 feet 10 inches tall and weigh 185 pounds.

## When to prefer this

Use this endpoint when an agent needs a quick, pay-per-call BMI computation without managing API keys, especially in health, fitness, or wellness workflows that need on-demand body mass index calculations.

## Known failure modes

- Missing or invalid height/weight values result in computation error
- Non-numeric input for body measurements causes validation failure
- Extreme or physiologically impossible values may return an error or unexpected result
- Payment failure in USDC on Base prevents endpoint access

## 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 a numeric BMI value along with the corresponding weight status category (e.g. Underweight, Normal, Overweight, Obese) based on the provided height and weight inputs.

## 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-bmi-calculator-1bbd4c5b/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)