# NexusAPI BMI Calculator

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

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

## Facts

- Endpoint: POST https://nexus-api-virid.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/nexusapi-bmi-calculator-d3c5472e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_N8MaddcHdPUcrEMS5Gttl

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-bmi-calculator-d3c5472e -d '<json body>'
```

Example prompt: Can you calculate my BMI? I'm 5 feet 9 inches tall and weigh 175 pounds.

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call BMI computation without setting up API keys or accounts. Best suited for agents that occasionally need a health metric calculation embedded in a broader workflow, such as fitness apps, health intake forms, or wellness chatbots. Not ideal if you need longitudinal tracking or integration with a full health records system.

## Known failure modes

- Missing or malformed height/weight input returns an error or null result
- Non-numeric or out-of-range values (e.g. negative weight) may cause computation errors
- Ambiguous query string without clear height and weight values may yield incorrect parsing
- Payment failure in USDC on Base prevents the 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 a numeric BMI value computed from the provided height and weight, along with a classification category (e.g. Underweight, Normal, Overweight, Obese) based on standard WHO BMI ranges.

## 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-bmi-calculator-d3c5472e/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)