# Unit Converter API (klymax402)

> Unit Converter API (klymax402) is a paid API for AI agents from unit-converter.api.klymax402.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Converts a numeric value from one measurement unit to another across categories like length, weight, temperature, volume, speed, and data.

## Facts

- Endpoint: GET https://unit-converter.api.klymax402.com/api/convert
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/unit-converter-api-klymax402-099829cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BIZKhdKgBwdESZwmYlFe1

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 unit-converter-api-klymax402-099829cd
```

Example prompt: Convert 72 degrees Fahrenheit to Celsius for me using the unit converter.

## When to prefer this

Use this endpoint when you need a quick, programmatic unit conversion across common measurement categories (length, weight, temperature, volume, speed, data). Prefer this over manual formulas or LLM-generated math when accuracy and reliability matter.

## Known failure modes

- Unsupported or misspelled unit strings return an error or null result
- Incompatible unit categories (e.g. converting kg to miles) return an error
- Missing required fields (value, from, or to) result in a 400 bad request
- Non-numeric value input causes a validation error
- Payment failure or insufficient funds returns a 402 response

## How this service works

Convert a value between measurement units

## Output

The agent receives the converted numeric value in the requested target unit, given the source value and unit provided.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "to": {
   "type": "string",
   "description": "Target unit (e.g. mi, kg, fahrenheit, gal, km/h, GB)"
  },
  "from": {
   "type": "string",
   "description": "Source unit (e.g. km, lb, celsius, l, mph, MB)"
  },
  "value": {
   "type": "number",
   "description": "The numeric value to convert"
  },
  "category": {
   "type": "string",
   "description": "Optional category hint: length, weight, temperature, volume, speed, data"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/unit-converter-api-klymax402-099829cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from unit-converter.api.klymax402.com](https://www.zero.xyz/host/unit-converter.api.klymax402.com/llms.txt)