# Vextorium UTXO Balance Lookup

> Vextorium UTXO Balance Lookup is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-19).

Fetches the confirmed balance, pending amount, transaction count, and USD value for a UTXO-based cryptocurrency address (LTC, DOGE, or DASH)

## Facts

- Endpoint: POST https://api.vextorium.com/v1/utxo-balance?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-utxo-balance-lookup-e488aeeb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lI_nI2o9XLjesrM-XTjCA

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-utxo-balance-lookup-e488aeeb -d '<json body>'
```

Example prompt: What's the current confirmed balance and USD value of the Dogecoin address DH5yaieqoZN36fDVciNyRueRGvGLR3mr7L?

## When to prefer this

Use this endpoint when you need confirmed on-chain balance, USD valuation, and historical send/receive totals for a Litecoin, Dogecoin, or Dash address specifically. It combines real-time price data (DefiLlama) with UTXO blockchain data (BlockCypher) in a single call, making it ideal for portfolio tracking, payment verification, or address auditing for these three UTXO altcoins. Not suitable for Bitcoin, Ethereum, Solana, or other chains.

## Known failure modes

- Invalid or malformed address returns an error or null balance
- Unsupported currency (only ltc, doge, dash accepted) causes a validation error
- BlockCypher API downtime results in a service error
- Network congestion or indexer lag may cause stale balance data
- Missing required 'address' field in request body causes schema validation failure

## How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

## Output

Returns a JSON object with the queried address, currency symbol, confirmed balance (in native units), pending balance, total sent, total received, transaction count, current USD price of the asset, and total USD value of the balance. Data is sourced from BlockCypher for on-chain data and DefiLlama for price.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "address": {
   "type": "string"
  },
  "currency": {
   "enum": [
    "ltc",
    "doge",
    "dash"
   ],
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "source": "BlockCypher; price: DefiLlama",
  "address": "DH5yaieqoZN36fDVciNyRueRGvGLR3mr7L",
  "balance": 62221.11119864,
  "pending": 0,
  "currency": "DOGE",
  "price_usd": 0.09328696506165869,
  "value_usd": 5804.42,
  "total_sent": 43853282503.07366,
  "transactions": 1484,
  "total_received": 43853344724.18486
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-utxo-balance-lookup-e488aeeb/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)