# Vextorium EVM Batch Balance Checker

> Vextorium EVM Batch Balance Checker is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-19).

Fetches native token and optional ERC-20 balances for up to 50 EVM wallet addresses in a single call across 12 supported chains, returning per-wallet and aggregate totals.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/evm-balances-batch?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-evm-batch-balance-checker-abbd1bdc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_l7DRTOWFIpQ5jbQBjtp7M

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-evm-batch-balance-checker-abbd1bdc -d '<json body>'
```

Example prompt: Check the native ETH balance and USDC token balance for these 5 wallet addresses on Base and give me the per-wallet breakdown plus the total: 0xabc..., 0xdef..., 0x123..., 0x456..., 0x789...

## When to prefer this

Choose this endpoint when you need to check balances for multiple EVM wallets (up to 50) in a single API call across any of 12 supported chains. It is ideal for treasury management, airdrop verification, whale tracking, or any scenario where calling a single-address balance endpoint repeatedly would be inefficient. It uniquely combines native and ERC-20 balance lookup with pre-computed totals, saving downstream aggregation work.

## Known failure modes

- Invalid or malformed wallet address causes an error or null balance for that entry
- Unsupported chain specified returns a validation error
- More than 50 addresses submitted may be rejected or truncated
- Invalid ERC-20 token contract address results in null token data
- Network congestion or RPC errors may cause partial or failed responses
- Missing required 'addresses' field returns a schema validation error

## 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 containing the network name, native token symbol, optional ERC-20 token metadata (name, symbol, decimals), an array of per-wallet records each with native and token balances, plus aggregate totals for native and token balances across all submitted addresses.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "token": {
   "type": "string"
  },
  "network": {
   "enum": [
    "base",
    "ethereum",
    "arbitrum",
    "optimism",
    "polygon",
    "bnb",
    "avalanche",
    "gnosis",
    "line",
    "scroll",
    "sonic",
    "unichain"
   ],
   "type": "string",
   "description": "Chain (default base)"
  },
  "addresses": {
   "type": "array",
   "items": {
    "type": "string"
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "token": {
   "name": "USD Coin",
   "symbol": "USDC",
   "decimals": 6
  },
  "native": "ETH",
  "network": "base",
  "wallets": [
   {
    "token": 1.669325,
    "native": 0.00394238,
    "wallet": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf"
   },
   {
    "token": 15115.045208,
    "native": 47735.25961548196,
    "wallet": "0xF977814e90dA44bFA03b6295A0616a897441aceC"
   }
  ],
  "total_token": 15116.714533,
  "native_total": 47735.263557862
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-evm-batch-balance-checker-abbd1bdc/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)