80trust / 100

Chain Code

by Tanod chainpeek in Onchain & crypto

x402 APIPassing, checked 2 h ago

chainpeek (Tanod) deployed bytecode size, keccak hash and EIP-1167 minimal-proxy / EIP-7702 delegation detection of an address on Ethereum, Base or Robinhood Chain. Use when an agent must see if an address has contract code: size, hash, EIP-1167 clone or EIP-7702 delegation.

POST https://tanod.dev/v1/chain/code

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
273 ms typical, 745 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

# bash or zsh: see the payment challenge (nothing is charged)
curl -g -i -X POST 'https://tanod.dev/v1/chain/code' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"0xcDAC0d6c6C59727a65F871236188350531885C43","chain":"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 $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftanod.dev%2Fv1%2Fchain%2Fcode
const res = await pay("https://tanod.dev/v1/chain/code", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: "{\"address\":\"0xcDAC0d6c6C59727a65F871236188350531885C43\",\"chain\":\"base\"}",
});
console.log(await res.json());

Example input

{
  "address": "0xcDAC0d6c6C59727a65F871236188350531885C43",
  "chain": "base"
}

Example output

{
  "address": "0xcDAC0d6c6C59727a65F871236188350531885C43",
  "block": "latest",
  "chain": "base",
  "code_hash": "0x7dd6ffe6daf4e82054c91becd71b8c9ba0a135f0f403da1ef7b0f81bb8ba4408",
  "code_prefix": "0x363d3d373d3d3d363d73a4e46b4f701c62e14df11b48dce76a7d793cd6d75af43d82803e903d91602b57fd5bf3",
  "code_prefix_truncated": false,
  "code_size": 45,
  "eip1167_implementation": "0xA4e46b4f701c62e14DF11B48dCe76A7d793CD6d7",
  "eip7702_delegate": null,
  "is_contract": true,
  "is_eip1167_proxy": true,
  "is_eip7702_delegated": false,
  "kind": "eip1167_minimal_proxy",
  "note": "code_prefix is the first 64 bytes; for other proxy types (EIP-1967, beacon, diamond) use /v1/chain/proxy"
}

Security scan

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

Recent checks

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2 h agoPassed402260 ms$0.001
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