# EVM Wallet Balance Lookup

> EVM Wallet Balance Lookup is a paid API for AI agents from free-asset-radar-x402.besenok2018.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Returns the native token balance, nonce, contract status, and network info for a given EVM wallet address

## Facts

- Endpoint: GET https://free-asset-radar-x402.besenok2018.workers.dev/api/x402/evm-wallet-balance?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/evm-wallet-balance-lookup-0ec7759b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mfj8cxqtXbSrnYrA_VBoW

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 evm-wallet-balance-lookup-0ec7759b
```

Example prompt: What's the current native token balance and nonce for wallet 0xAbC123...456 on Arbitrum — and is it a contract or EOA?

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call, edge-hosted lookup of native token balance and account state (nonce, contract status) for an EVM address — especially useful for autonomous agents that need to verify wallet funding or account status before executing on-chain actions, without running a full node or paying for a subscription RPC service.

## Known failure modes

- Invalid or malformed EVM address returns an error response
- Unsupported or unrecognized network name may return an error or empty result
- Rate limiting or Cloudflare Worker quota exceeded may return 429 or 503
- Payment failure via x402 protocol results in 402 Payment Required before any data is returned
- Address with no on-chain activity may return nonce 0 and balance 0.0

## How this service works

Stable edge-hosted x402 utilities for autonomous agents.

## Output

Returns a JSON object containing the wallet address, the blockchain network (e.g. 'arbitrum'), the native token balance as a decimal string, the current nonce (transaction count), and a boolean indicating whether the address is a smart contract.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "nonce": 7,
  "address": "0x...",
  "network": "arbitrum",
  "isContract": false,
  "nativeBalance": "0.01"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evm-wallet-balance-lookup-0ec7759b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from free-asset-radar-x402.besenok2018.workers.dev](https://www.zero.xyz/host/free-asset-radar-x402.besenok2018.workers.dev/llms.txt)