# Vextorium EVM Address Inspector

> Vextorium EVM Address Inspector is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-11).

Inspects an EVM address to determine if it is a wallet (EOA), EIP-7702 delegated wallet, or contract, including bytecode size, token standard support, proxy details, nonce, and native balance.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/address-inspect?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-evm-address-inspector-6b60ab5d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xqftQOmRB8MPAanKUmf58

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 vextorium-evm-address-inspector-6b60ab5d -d '<json body>'
```

Example prompt: Can you inspect the address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base and tell me if it's a wallet or contract, what token standards it supports, its native balance, and whether it's a proxy with an implementation address?

## When to prefer this

Use this endpoint when you need to determine the nature of an EVM address — whether it is a plain wallet, EIP-7702 delegated wallet, or smart contract — and want rich metadata like token standard support, proxy chain, bytecode size, and on-chain balances in a single call across Base, Ethereum, Arbitrum, Optimism, and Polygon. Prefer this over a generic block explorer lookup when you need structured, machine-readable output suitable for agentic workflows.

## Known failure modes

- Invalid or malformed address format returns an error
- Unsupported network value returns a validation error
- Address not found or zero-activity address may return null fields
- Network RPC timeout may cause delayed or failed response
- Non-proxy contracts return null for implementation_proxy and proxy_beacon fields

## How this service works

Address inspector for EVM chains: wallet (EOA), EIP-7702 delegated wallet or contract; bytecode size, ERC-20/721/1155 support, proxy implementation and beacon, nonce and native balance.

## Output

Returns a JSON object containing the address type (EOA, contract, or EIP-7702 delegated wallet), the network and block explorer URL, list of supported token standards (ERC-20, ERC-721, ERC-1155), bytecode size in bytes, native token balance, number of sent transactions (nonce), and proxy implementation or beacon address if applicable.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "Address to inspect"
      },
      "network": {
       "enum": [
        "base",
        "ethereum",
        "arbitrum",
        "optimism",
        "polygon"
       ],
       "type": "string",
       "description": "EVM network (default base)"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": [
      "object",
      "null"
     ],
     "properties": {
      "type": {
       "type": [
        "string",
        "null"
       ]
      },
      "address": {
       "type": [
        "string",
        "null"
       ]
      },
      "network": {
       "type": [
        "string",
        "null"
       ]
      },
      "explorer": {
       "type": [
        "string",
        "null"
       ]
      },
      "standards": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": [
         "null",
         "string"
        ]
       }
      },
      "proxy_beacon": {},
      "bytecode_size": {
       "type": [
        "number",
        "null"
       ]
      },
      "native_balance": {
       "type": [
        "number",
        "null"
       ]
      },
      "sent_transactions": {
       "type": [
        "number",
        "null"
       ]
      },
      "implementation_proxy": {
       "type": [
        "string",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "type": "contrato",
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "network": "base",
  "explorer": "https://basescan.org/address/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "standards": [
   "ERC-20"
  ],
  "proxy_beacon": null,
  "bytecode_size": 1852,
  "native_balance": 0.009800646158085844,
  "sent_transactions": 1,
  "implementation_proxy": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-evm-address-inspector-6b60ab5d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)