# Vextorium EVM Live Wallet Balance

> Vextorium EVM Live Wallet Balance is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-13).

Returns the live native coin balance plus up to 20 selected ERC-20 token balances for a wallet address across 12 EVM-compatible chains in a single call.

## Facts

- Endpoint: POST https://api.vextorium.com/evm-saldos-vivos-pago?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-evm-live-wallet-balance-0f35f7bf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pno-MMPtaZhFNcMCrH5Rm

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-live-wallet-balance-0f35f7bf -d '<json body>'
```

Example prompt: What's the live ETH and USDC balance for wallet 0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf on Base right now?

## When to prefer this

Choose this endpoint when you need a combined native coin and multi-ERC-20 token balance snapshot for a single wallet address across any of 12 supported EVM chains in one low-cost call, rather than making separate RPC calls per token or per chain. It is especially useful for portfolio monitoring, payment verification, or DeFi agent workflows needing real-time balance data without running your own node infrastructure.

## Known failure modes

- Invalid or malformed wallet address returns an error
- Unsupported chain name outside the 12 supported chains causes rejection
- Token contract address not found or non-ERC-20 address may return zero or null balance
- More than 20 tokens requested may be truncated or rejected
- Network RPC unavailability may cause a timeout or empty response
- Payment of 0.003 USDC not provided or rejected via x402 results in 402 response

## How this service works

Live balance of a wallet: native coin plus up to 20 ERC-20 tokens you choose (USDC/USDT by default) in one call. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.

## Output

A JSON object containing the chain name, native coin ticker, native coin balance as a decimal number, the wallet address, and an array of requested ERC-20 tokens each with their contract address, symbol, human-readable balance, and raw balance string.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "direccion"
     ],
     "properties": {
      "red": {
       "enum": [
        "base",
        "ethereum",
        "arbitrum",
        "optimism",
        "polygon",
        "bnb",
        "avalanche",
        "gnosis",
        "linea",
        "scroll",
        "sonic",
        "unichain"
       ],
       "type": "string",
       "description": "Chain (default base)"
      },
      "tokens": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "direccion": {
       "type": "string"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": [
      "object",
      "null"
     ],
     "properties": {
      "red": {
       "type": [
        "string",
        "null"
       ]
      },
      "nativo": {
       "type": [
        "string",
        "null"
       ]
      },
      "tokens": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": [
         "null",
         "object"
        ],
        "properties": {
         "saldo": {
          "type": [
           "null",
           "number"
          ]
         },
         "token": {
          "type": [
           "null",
           "string"
          ]
         },
         "simbolo": {
          "type": [
           "null",
           "string"
          ]
         },
         "saldo_bruto": {
          "type": [
           "null",
           "string"
          ]
         }
        }
       }
      },
      "wallet": {
       "type": [
        "string",
        "null"
       ]
      },
      "saldo_nativo": {
       "type": [
        "number",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "red": "base",
  "nativo": "ETH",
  "tokens": [
   {
    "saldo": 0,
    "token": "0x4200000000000000000000000000000000000006",
    "simbolo": "WETH",
    "saldo_bruto": "0"
   },
   {
    "saldo": 1.545325,
    "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "simbolo": "USDC",
    "saldo_bruto": "1545325"
   }
  ],
  "wallet": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
  "saldo_nativo": 0.00394238
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-evm-live-wallet-balance-0f35f7bf/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)