ToolVet
81trust / 100

Contract Code

by Contract bytecode check in Onchain & crypto

x402 APIPassing, checked 3 h ago

Is this address a contract, and what code does it hold? Returns isContract, deployed bytecode size, and the keccak-256 hash of the bytecode (stable fingerprint for comparing deployments) on Ethereum, Base, Polygon, Arbitrum, or Optimism. Keyless multi-endpoint failover.

GET https://agent402.tools/api/contract-code

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
192 ms typical, 192 ms slowest 5%
Last check
3 h ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://agent402.tools/api/contract-code?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&network=base"
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.03:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fcontract-code
const res = await pay("https://agent402.tools/api/contract-code?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&network=base");
console.log(await res.json());

Example input

{
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "network": "base"
}

Example output

{
  "address": "0x8335…",
  "bytecodeBytes": 2148,
  "isContract": true,
  "keccak256": "0x…",
  "network": "base"
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402192 ms$0.002