# OmniAPI BMI Calculator

> OmniAPI BMI Calculator is a paid API for AI agents from omni-api-cyan.vercel.app, paid per call via x402, $0.0187/call, status unknown (last checked 2026-09-15).

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

## Facts

- Endpoint: POST https://omni-api-cyan.vercel.app/api/health/bmi
- Price: $0.0187/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/omniapi-bmi-calculator-003cce1f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LyIiTh-WQX7A-Bh2IkdQC

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-bmi-calculator-003cce1f -d '<json body>'
```

Example prompt: Can you calculate my BMI? I'm 5 feet 10 inches tall and weigh 175 pounds.

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call BMI computation without standing up your own health calculation service. Useful in wellness apps, fitness chatbots, or health screening workflows where BMI is one of many metrics needed on demand.

## Known failure modes

- Missing required query field returns an error
- Nonsensical or extreme height/weight values may produce unexpected classifications
- Ambiguous unit format (imperial vs metric) may yield incorrect results if not specified
- Service may be unavailable or return 402 if payment in USDC via x402 is not properly handled

## 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 a computed BMI numeric value along with the corresponding weight classification (e.g. underweight, normal, overweight, obese) based on the provided height and weight inputs.

## 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-bmi-calculator-003cce1f/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)