# SiteCheck EVM Address Lookup

> SiteCheck EVM Address Lookup is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).

Looks up EVM wallet address details including native balance, nonce, code bytes, ENS name, delegation info, and account type across multiple EVM chains

## Facts

- Endpoint: GET https://api.sitecheck-api.workers.dev/api/evm/address?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-evm-address-lookup-9e6252d0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Q-TPbVWr-vBaMAqWam3sL

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 sitecheck-evm-address-lookup-9e6252d0
```

Example prompt: Can you check what the ETH balance and ENS name are for the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum?

## When to prefer this

Use this endpoint when you need a quick, multi-field snapshot of an EVM address including balance, nonce, account type, and ENS name in a single call. Prefer it over raw RPC calls when you want USD-denominated balances and ENS resolution bundled together. Supports Base, Ethereum, Arbitrum, Optimism, and Polygon.

## Known failure modes

- Invalid or malformed 0x address returns an error
- Unsupported chain name returns an error
- Address with no on-chain activity may return zero balance and nonce
- ENS resolution may fail or return null if no primary name is set
- RPC node timeouts can cause delayed or failed responses

## How this service works

Native balance, nonce and account type of an EVM address on Base (default), Ethereum, Arbitrum, Optimism or Polygon: a wallet, a contract, or an EIP-7702 delegated wallet with its delegate. On Ethereum also the ENS primary name, when it resolves back to the address. Read over public RPC.

## Output

Returns a JSON object with the account's kind (EOA, contract, or EIP-7702-delegated), chain, nonce, native token balance (amount, symbol, and USD value), primary ENS name if any, delegation target address if EIP-7702, code byte count, checked timestamp, and data sources used.

## 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": {
      "chain": {
       "type": "string",
       "description": "base (default), ethereum, arbitrum, optimism or polygon"
      },
      "address": {
       "type": "string",
       "description": "EVM address, 0x…"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "kind": "eip7702-delegated",
  "chain": "ethereum",
  "nonce": 5969,
  "native": {
   "usd": 14491.96,
   "amount": 5.76965394,
   "symbol": "ETH"
  },
  "source": "https://ethereum-rpc.publicnode.com (eth_getBalance, eth_getTransactionCount, eth_getCode); Coinbase spot price; ENS reverse record on Ethereum",
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
  "checkedAt": "2026-10-14T04:49:17.947Z",
  "codeBytes": 23,
  "disclaimer": "Information only, not financial advice.",
  "delegatedTo": "0x5A7FC11397E9a8AD41BF10bf13F22B0a63f96f6d",
  "primaryName": "vitalik.eth"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-evm-address-lookup-9e6252d0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sitecheck-api.workers.dev](https://www.zero.xyz/host/api.sitecheck-api.workers.dev/llms.txt)