# Multi-Chain Native Token Balance with USD Valuation

> Multi-Chain Native Token Balance with USD Valuation is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-14).

Returns native token balances (ETH, MATIC, BNB, etc.) for a wallet address across Ethereum, Base, Arbitrum, Optimism, Polygon, and BSC in one call, each converted to USD with a portfolio total.

## Facts

- Endpoint: GET https://api.x402node.dev/chain/balance-multi
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/multi-chain-native-token-balance-with-usd-valuation-edfe7b68
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NEAOD_k-IOJ02jeD3mqSG

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 multi-chain-native-token-balance-with-usd-valuation-edfe7b68
```

Example prompt: What's the total native token portfolio value for wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e across Ethereum, Base, Arbitrum, Optimism, Polygon, and BSC — show me each chain's balance and the USD total?

## When to prefer this

Use this endpoint when you need native token balances across multiple EVM chains in a single API call without managing multiple RPC connections or price feeds. It is ideal for portfolio dashboards, wallet analytics, and cross-chain net worth calculations for wallets active on Ethereum, Base, Arbitrum, Optimism, Polygon, or BSC.

## Known failure modes

- Invalid or malformed wallet address returns an error
- Unsupported chain identifier returns an error or is skipped
- RPC provider downtime may cause one chain's balance to be missing or stale
- Price feed unavailability may result in null USD value for a specific token
- No holdings on any chain returns zeros but a valid response

## How this service works

Native token balance of an address across major EVM chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BSC) in a single call, each valued in USD with a portfolio total. Aggregates multiple RPCs and prices so an agent gets cross-chain holdings in one request. Live. multichain balance, cross chain holdings, wallet native balance, portfolio Accepts payment on Base or Solana — either network works.

## Output

Returns a per-chain breakdown of native token balances (e.g. ETH on Ethereum, ETH on Base, MATIC on Polygon) with each balance converted to USD at live prices, plus a summed portfolio total in USD across all six supported chains.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "0x EVM address (required)"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/multi-chain-native-token-balance-with-usd-valuation-edfe7b68/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.x402node.dev](https://www.zero.xyz/host/api.x402node.dev/llms.txt)