# Vextorium Multi-Chain Wallet Balance Checker

> Vextorium Multi-Chain Wallet Balance Checker is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-01).

Returns native coin and USDC balances per chain plus total USD value for a single wallet address across Base, Ethereum, Arbitrum, Optimism, and Polygon.

## Facts

- Endpoint: POST https://api.vextorium.com/saldo-multired-pago?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-multi-chain-wallet-balance-checker-f2dcca97
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mFvYc6lxiYdRX1s80BXMY

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-multi-chain-wallet-balance-checker-f2dcca97 -d '<json body>'
```

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

## When to prefer this

Choose this endpoint when you need a single-call multi-chain view of both native coin and USDC balances aggregated into a USD total across Base, Ethereum, Arbitrum, Optimism, and Polygon. Prefer it over single-chain balance endpoints when the user's portfolio spans multiple EVM networks and you want one unified response rather than five separate calls.

## Known failure modes

- Invalid or malformed wallet address returns an error or null fields
- Rate limiting or payment failure results in a 402 or 429 response
- RPC node timeouts on one or more chains may yield partial or null per-chain data
- Non-EVM address formats (e.g. Solana) will fail validation
- Temporary chain congestion may delay responses for specific networks

## How this service works

One address across five EVM chains (Base, Ethereum, Arbitrum, Optimism, Polygon): native coin and USDC balance per chain and total USD value.

## Output

A JSON object containing the wallet address, a per-chain breakdown (indexed by network name) with native coin balance and USDC balance for each of the five chains (Base, Ethereum, Arbitrum, Optimism, Polygon), an approximate total USD value aggregated across all chains, and an optional note field.

## 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": {
      "direccion": {
       "type": "string",
       "description": "Wallet address"
      }
     }
    },
    "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",
     "properties": {
      "nota": {
       "type": [
        "string",
        "null"
       ]
      },
      "redes": {
       "type": [
        "object",
        "null"
       ],
       "additionalProperties": {
        "type": "object"
       }
      },
      "direccion": {
       "type": [
        "string",
        "null"
       ]
      },
      "valor_total_usd_aprox": {
       "type": [
        "number",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-multi-chain-wallet-balance-checker-f2dcca97/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)