# Vextorium Crypto & Currency Converter

> Vextorium Crypto & Currency Converter is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).

Converts an amount between any combination of cryptocurrencies and fiat currencies using live DefiLlama prices and ECB exchange rates.

## Facts

- Endpoint: POST https://api.vextorium.com/cripto-convertir-pago?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-crypto-currency-converter-9b083a3e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ATb666NF9rw2-x0npM6OT

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-crypto-currency-converter-9b083a3e -d '<json body>'
```

Example prompt: How much ETH would I get for 0.5 BTC right now, using live prices?

## When to prefer this

Choose this endpoint when you need a live, accurate conversion between any mix of cryptocurrencies and fiat currencies in a single call. It is especially useful when DefiLlama crypto prices and ECB fiat rates are the desired data sources, and when you need the USD equivalent alongside the converted amount. Prefer it over on-chain swap quotes (which include slippage and gas) when you only need a price reference, not an executable trade.

## Known failure modes

- Unsupported or unrecognized currency/crypto symbol returns an error
- DefiLlama or ECB data temporarily unavailable causes fetch failure
- Invalid or missing required fields (cantidad, de, a) returns validation error
- Very low-liquidity tokens may have stale or missing prices

## How this service works

Convert an amount between cryptocurrencies and currencies (0.5 BTC to ETH, 100 USDC to EUR, 1000 EUR to SOL) with live DefiLlama prices and ECB rates.

## Output

Returns a JSON object with the converted result amount, the exchange rate used (tipo), the source and destination symbols (de and a), the original amount (cantidad), the USD equivalent value (valor_usd), and the timestamp of the conversion (fecha).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "a": {
   "type": "string"
  },
  "de": {
   "type": "string"
  },
  "cantidad": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "a": "ETH",
  "de": "BTC",
  "tipo": 31.627119682335,
  "fecha": "2026-10-02T20:20:20+00:00",
  "cantidad": 0.5,
  "resultado": 15.8135598412,
  "valor_usd": 42177.2199
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-crypto-currency-converter-9b083a3e/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)