# 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 2026-10-15).

Converts an amount between any cryptocurrency and/or fiat currency pair using live DefiLlama crypto prices and ECB exchange rates.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/crypto-convert?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-crypto-currency-converter-c9d4cc4a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sbhERh5ACgMLikcKBbM9T

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-c9d4cc4a -d '<json body>'
```

Example prompt: How much ETH would I get for 0.5 BTC right now? Use live prices to convert it.

## When to prefer this

Choose this endpoint when you need real-time conversion between cryptocurrencies and/or fiat currencies backed by DefiLlama and ECB data sources. Ideal when you need both crypto-to-crypto, fiat-to-crypto, and crypto-to-fiat conversions from a single endpoint. Prefer over generic exchange rate APIs when DeFi token support (SOL, ETH, BTC, USDC, etc.) combined with EUR-zone fiat rates is required.

## Known failure modes

- Unsupported or misspelled currency/token symbol returns an error or null result
- DefiLlama or ECB price data unavailable causes conversion failure
- Amount of zero or negative value may produce invalid result
- Very obscure tokens without DefiLlama coverage will fail
- Network timeout if external price feeds are slow to respond

## How this service works

Convert an amount between the main cryptocurrencies and ECB currencies (0.5 BTC to ETH, 100 USDT to EUR, 1000 EUR to SOL) with alternative.me prices (~190 largest coins) and ECB reference rates.

## Output

Returns a JSON object with the converted amount (result), the exchange rate used (type), the original amount and source currency (amount, from), the target currency (a), the USD equivalent value (value_usd), and an ISO 8601 timestamp (date) of when the conversion was calculated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "to": {
   "type": "string",
   "description": "Ticker or ISO currency (the Spanish field name 'a' is also accepted)"
  },
  "from": {
   "type": "string",
   "description": "Ticker or ISO currency"
  },
  "amount": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "a": "ETH",
  "date": "2026-10-16T21:12:44+00:00",
  "from": "BTC",
  "type": 33.8313492886,
  "amount": 0.5,
  "result": 16.91567464,
  "source": "Data from alternative.me (Crypto API: free to use, including commercial projects; https://alternative.me/crypto/api/)",
  "value_usd": 40782
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-crypto-currency-converter-c9d4cc4a/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)