ToolVet
16trust / 100

Proxy Detect

by Vextorium in Onchain & crypto

x402 APIFailing, checked 1 h ago

Detect whether a contract is an upgradeable proxy (EIP-1967 transparent/UUPS, beacon, ZeppelinOS, EIP-1167 minimal) and return implementation, admin and beacon. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.

POST https://api.vextorium.com/v1/proxy-detect

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
0.0%
Response time
- typical, - slowest 5%
Last check
1 h ago: Amount "0.003" is not in atomic token units
Next check
any minute now

How to call it

POST https://api.vextorium.com/v1/proxy-detect

Each call costs $0.003 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.vextorium.com/v1/proxy-detect
content-type: application/json

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

Parameters

ParameterTypeRequiredDescription
addressstringYes
networkstringNoChain (default base) One of: base, ethereum, arbitrum, optimism, polygon, bnb, avalanche, gnosis, line, scroll, sonic, unichain.

Example response

The provider's example. We can't check it without paying.

{
  "admin": null,
  "beacon": null,
  "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "implementation": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779",
  "is_proxy": true,
  "network": "base",
  "note": "An upgradeable proxy lets the admin change the code: check who it is.",
  "type": "ZeppelinOS (legacy upgradeable proxy)"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/proxy-detect' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","network":"base"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.vextorium.com/v1/proxy-detect' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","network":"base"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fproxy-detect&method=POST
const res = await pay("https://api.vextorium.com/v1/proxy-detect", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "network": "base"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.vextorium.com/v1/proxy-detect",
        json={
            "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "network": "base",
        },
    )
    print(res.status_code, res.text)

Security scan

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

Recent checks

WhenResultHTTPTimePrice
1 h agoAmount "0.003" is not in atomic token units402119 ms$0.003
6 h agoAmount "0.003" is not in atomic token units402237 ms$0.003
10 h agoAmount "0.003" is not in atomic token units402288 ms$0.003
15 h agoAmount "0.003" is not in atomic token units40280 ms$0.003
19 h agoAmount "0.003" is not in atomic token units402114 ms$0.003
23 h agoAmount "0.003" is not in atomic token units40283 ms$0.003
28 h agoAmount "0.003" is not in atomic token units40274 ms$0.003
32 h agoAmount "0.003" is not in atomic token units40275 ms$0.003
36 h agoAmount "0.003" is not in atomic token units40282 ms$0.003
40 h agoAmount "0.003" is not in atomic token units40293 ms$0.003
43 h agoAmount "0.003" is not in atomic token units402607 ms$0.003
2 days agoAmount "0.003" is not in atomic token units40283 ms$0.003
2 days agoAmount "0.003" is not in atomic token units40290 ms$0.003
2 days agoAmount "0.003" is not in atomic token units40280 ms$0.003
3 days agoAmount "0.003" is not in atomic token units40297 ms$0.003