# Saylor Innovations EVM Wallet Balance (Arbitrum)

> Saylor Innovations EVM Wallet Balance (Arbitrum) is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-03).

Returns the native token balance of an Arbitrum wallet address by querying on-chain data.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/evm/arbitrum/balance/:address?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-evm-wallet-balance-arbitrum-7c6bbbe0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_b79Jz9g10IXRlucY_ip78

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 saylor-innovations-evm-wallet-balance-arbitrum-7c6bbbe0
```

Example prompt: What's the current native token balance on Arbitrum for the wallet address 0x742d35Cc6634C0532925a3b8D4C9b9C6d1d2e3f4?

## When to prefer this

Use this endpoint when you specifically need the native token balance (ETH) of an Arbitrum L2 wallet address, rather than token balances (ERC-20) or balances on other chains such as Ethereum mainnet or Polygon. It is ideal for lightweight, per-address balance checks without needing a full indexer or node subscription.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty response
- Unresponsive Arbitrum node may cause timeout or service unavailability
- Non-checksummed address may cause lookup failure on some implementations
- Zero balance returned for newly created or unfunded addresses — valid but may be confused with an error

## How this service works

EVM Wallet Balances (arbitrum). Arbitrum ERC-20 token balance and native ETH balance for any wallet: up to 20 ERC-20 tokens (?tokens=) in one call, with symbols, decimals and human-readable amounts. Live chain head.

## Output

Returns the native token (ETH) balance held by the specified Arbitrum wallet address, expressed as an on-chain value. This reflects the actual confirmed balance at the time of query.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-evm-wallet-balance-arbitrum-7c6bbbe0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)