# Vextorium Unit Converter

> Vextorium Unit Converter is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).

Converts a numeric value from one unit to another across length, mass, volume, area, speed, temperature, data, energy, pressure, time, and power using exact conversion factors.

## Facts

- Endpoint: POST https://api.vextorium.com/convertir-unidades-pago?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-unit-converter-b4c06529
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wfWo5p0INRx3XHa3H66ah

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 vextorium-unit-converter-b4c06529 -d '<json body>'
```

Example prompt: Convert 10 kilometers to miles for me — give me the exact result.

## When to prefer this

Choose this endpoint when you need precise, exact unit conversions across a wide range of physical and data measurement categories — including the often-confused binary vs decimal data units (KiB vs KB). Prefer this over general-purpose LLM estimation when exactness is required.

## Known failure modes

- Unknown or unsupported unit strings return an error
- Incompatible unit pair (e.g. km to kg) returns an error indicating mismatched magnitudes
- Missing required fields (valor, de, a) return a validation error
- Non-numeric valor input causes a schema error

## How this service works

Convert units of length, mass, volume, area, speed, temperature, data (KB vs KiB), energy, pressure, time and power, metric and imperial, with exact factors.

## Output

Returns a JSON object with the original value, source unit, target unit, the magnitude category (e.g. 'longitud', 'masa', 'temperatura'), and the converted numeric result using exact conversion factors.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "a": {
   "type": "string",
   "description": "Target unit"
  },
  "de": {
   "type": "string",
   "description": "Source unit, e.g. km, lb, C, GiB, kWh"
  },
  "valor": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "a": "mi",
  "de": "km",
  "valor": 10,
  "magnitud": "longitud",
  "resultado": 6.21371192237
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-unit-converter-b4c06529/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)