Vextorium EVM Contract Detector

x402

Vextorium EVM Contract Detector is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-18).

Determines whether an EVM address is a smart contract or an EOA wallet, returning bytecode size, code hash, EIP-7702 delegation info, and EIP-1167 minimal proxy detection across 12 major EVM chains.

Price / call$0.003

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StatusUnknown

How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

Output

Returns a JSON object with: the address, the network it was checked on, a boolean is_contract indicating whether the address is a smart contract, the bytecode size in bytes, the keccak256 code hash, and the contract type string (e.g. 'contrato', proxy classification). Returns null for wallet/EOA fields where not applicable.

Example use cases

Pre-interaction contract safety check

“Before I interact with 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum, can you verify whether it's a smart contract or a plain wallet, and tell me if it looks like a proxy?”

DeFi integration address validation

“I'm building a DeFi integration and need to confirm that 0x4200000000000000000000000000000000000006 on Optimism is actually a deployed contract — can you get me the bytecode size and code hash?”

EIP-7702 delegation detection

“Can you check if the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum shows any EIP-7702 delegation or is just a regular EOA wallet?”

Technical details

Endpoint

POSThttps://api.vextorium.com/v1/evm-is-contract?utm_source=zero.xyz

When to prefer

Use this endpoint when you need reliable, multi-chain EVM address type detection including EIP-1167 minimal proxy and EIP-7702 delegation classification, which most generic blockchain explorers do not surface. Prefer this over manually querying eth_getCode RPC calls when you need structured output with bytecode metadata across 12 chains in a single consistent API. Ideal for agents performing security checks, DeFi routing logic, or address enrichment pipelines.

Side effects

Invalid or malformed EVM address returns an error response
Unsupported network name returns a validation error
Address not found or zero-address edge cases may return is_contract: false
Network connectivity issues to the target chain RPC may cause timeouts
Rate limiting or payment failures (x402) if quota is exceeded

Input

Schema · Request body

Field	Type	Description
address	string
network	string	Chain (default base)

Output

Schema · Response

{
  "type": "json",
  "example": {
    "type": "contrato",
    "bytes": 1852,
    "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "network": "base",
    "code_hash": "0xa6705a10bb756b5dea144591118be77d7af0c3eee3bf2dfe2583dcb0364fefab",
    "is_contract": true
  }
}

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