# Wallet Balance Lookup (EVM / Etherscan V2)

> Wallet Balance Lookup (EVM / Etherscan V2) is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-09-13).

Returns the native token balance and a list of recently interacted ERC-20 tokens for any EVM wallet address, using Etherscan V2.

## Facts

- Endpoint: GET https://api.strale.io/x402/wallet-balance-lookup
- Price: $0.0216/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-strale-io-bdd69a1d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NoD3X2h8cbgXkGgIG1zyG

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 api-strale-io-bdd69a1d
```

Example prompt: What's the ETH balance and recent ERC-20 token activity for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum mainnet (chain ID 1)?

## When to prefer this

Use this endpoint when you need to quickly check the on-chain native token balance and recent ERC-20 token interactions for any EVM-compatible wallet address, especially on Ethereum mainnet. Prefer this over block explorer UIs or full node queries when you need a lightweight, pay-per-call programmatic lookup without managing API keys or Etherscan subscriptions directly.

## Known failure modes

- Invalid or malformed wallet address returns an error
- Unsupported chain ID returns an error or empty result
- Etherscan V2 rate limit or downtime causes upstream failure
- Payment not provided or insufficient USDC causes 402 Payment Required response
- Address with no transaction history may return empty token list

## How this service works

Get the native token balance for any wallet address and a list of recently interacted ERC-20 tokens. Supports Ethereum and other EVM chains via Etherscan V2.

## Output

Returns the native token balance (e.g. ETH in wei or formatted units) for the queried wallet address on the specified EVM chain, along with a list of ERC-20 tokens the wallet has recently interacted with, including token metadata. Chain ID and address are echoed back in the response.

## Example request

```json
{
 "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
 "chain_id": "1"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "address"
 ],
 "properties": {
  "address": {
   "type": "string",
   "description": "Wallet address (0x...)"
  },
  "chain_id": {
   "type": "string",
   "description": "Chain ID (1=Ethereum). Default: 1"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "address": {
  "type": "string"
 },
 "chain_id": {
  "type": "string"
 },
 "recent_tokens": {
  "type": "array"
 },
 "native_balance_eth": {
  "type": "number"
 },
 "native_balance_wei": {
  "type": "string"
 },
 "token_transfer_count": {
  "type": "number"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-strale-io-bdd69a1d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)