# Vextorium Multichain EVM Balances

> Vextorium Multichain EVM Balances is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-19).

Returns native token and USDC balances across Ethereum, Base, Polygon, Arbitrum, and Optimism for a given wallet address, with approximate USD values.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/multichain-balances?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-multichain-evm-balances-5011cf87
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__iqVQ94pDopxemAiMpTxg

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-multichain-evm-balances-5011cf87 -d '<json body>'
```

Example prompt: What are the native token and USDC balances for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 across Ethereum, Base, Polygon, Arbitrum, and Optimism, and what's the total approximate USD value?

## When to prefer this

Use this endpoint when you need a single call to aggregate native token and USDC balances across the five major EVM networks (Ethereum, Base, Polygon, Arbitrum, Optimism) rather than querying each chain separately. It is ideal for portfolio snapshots, treasury audits, or pre-transaction balance checks. Prefer it over chain-specific endpoints when cross-chain aggregation and USD valuation are required simultaneously.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Address with no activity on a chain returns zero balances for that network
- Transient RPC node failures may result in missing data for one or more networks
- Rate limiting or payment failure returns a 402 or 429 response
- Non-EVM addresses (e.g. Solana pubkeys) will not return valid results

## 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

A JSON object keyed by network (ethereum, base, polygon, arbitrum, optimism), each containing the native token symbol, native balance, USDC balance, and approximate USD value. Also includes a top-level total_value_usd_approx field summing all networks, plus the queried address and a note about valuation caveats (e.g. POL is not USD-valued).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "address": {
   "type": "string",
   "description": "Wallet address"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "Includes the native coin and USDC. POL (Polygon) is not valued in USD.",
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
  "networks": {
   "base": {
    "usdc": 43.286078,
    "native": "ETH",
    "native_balance": 3.128821603472537,
    "value_usd_approx": 8411.44
   },
   "polygon": {
    "usdc": 9.885164,
    "native": "POL",
    "native_balance": 592.7197671566887,
    "value_usd_approx": 9.89
   },
   "arbitrum": {
    "usdc": 158.021811,
    "native": "ETH",
    "native_balance": 0.1594080103761386,
    "value_usd_approx": 584.36
   },
   "ethereum": {
    "usdc": 37.192124,
    "native": "ETH",
    "native_balance": 5.721681785331997,
    "value_usd_approx": 15340.05
   },
   "optimism": {
    "usdc": 24.433911,
    "native": "ETH",
    "native_balance": 0.1810695918743475,
    "value_usd_approx": 508.71
   }
  },
  "total_value_usd_approx": 24854.46
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-multichain-evm-balances-5011cf87/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)