# Bulk EVM Wallet Balances via Multicall3

> Bulk EVM Wallet Balances via Multicall3 is a paid API for AI agents from apexfaucet.xyz, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-19).

Fetches native coin or ERC20 token balances for up to 50 wallet addresses in a single Multicall3 call across Ethereum, Base, Arc, or BNB Chain, all read at the same block.

## Facts

- Endpoint: GET https://apexfaucet.xyz/api/x402/evm-balances-bulk?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bulk-evm-wallet-balances-via-multicall3-4ef9c2eb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_huOLbj-SqhyGiC3DcM-FY

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 bulk-evm-wallet-balances-via-multicall3-4ef9c2eb
```

Example prompt: Can you get me the USDC balances (contract 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48) for these 10 wallet addresses on Ethereum, all read at the same block: 0x1234..., 0x5678..., 0xabcd...?

## When to prefer this

Choose this endpoint when you need to read balances for multiple wallets (2–50) in a single consistent call. It is far more efficient and cheaper than issuing individual balance queries per address, and the Multicall3 guarantee means all balances are from the same block — essential for snapshot accuracy, airdrop checks, or portfolio reporting.

## Known failure modes

- More than 50 addresses supplied — request will be rejected or truncated
- Invalid address format (non-0x hex) causes validation failure
- Unsupported chain name returns an error
- Invalid ERC20 token contract address (non-existent or wrong chain) may return zero balances or error
- Network congestion on the target chain may cause timeouts

## How this service works

Free APEX on X1, and free USDC plus APEX on Arc, three times a day. No gas, no sign-up. Plus a swap, a screener, APEX City and token checks.

## Output

Returns a list of wallet addresses each paired with their balance (native coin or specified ERC20), all sourced from the same block via Multicall3, ensuring consistency across the entire result set.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "addresses"
     ],
     "properties": {
      "chain": {
       "enum": [
        "ethereum",
        "base",
        "arc",
        "bnb"
       ],
       "type": "string",
       "description": "Chain: ethereum, base, arc or bnb. Default ethereum."
      },
      "token": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "Optional ERC20; without it, the native coin."
      },
      "addresses": {
       "type": "string",
       "maxList": 50,
       "pattern": "^0x[0-9a-fA-F]{40}(,0x[0-9a-fA-F]{40})*$",
       "description": "Up to 50 wallet addresses, comma separated."
      }
     }
    }
   }
  },
  "output": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "schema": {
  "type": "object",
  "properties": {
   "ok": {
    "type": "boolean"
   },
   "data": {
    "type": "object"
   },
   "paid": {
    "type": "number"
   }
  }
 },
 "example": {
  "ok": true,
  "data": {
   "ok": true,
   "asset": {
    "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "symbol": "USDC",
    "decimals": 6
   },
   "block": 52561137,
   "chain": "base",
   "count": 2,
   "balances": [
    {
     "raw": "44783666",
     "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
     "balance": "44.783666"
    },
    {
     "raw": "17147",
     "address": "0x024b82335C29Fa5606a8ea5c1D24FC9eAD50700C",
     "balance": "0.017147"
    }
   ],
   "blockTime": "2026-10-13T17:13:41.000Z"
  },
  "paid": 0.005
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bulk-evm-wallet-balances-via-multicall3-4ef9c2eb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apexfaucet.xyz](https://www.zero.xyz/host/apexfaucet.xyz/llms.txt)