ToolVet
78trust / 100

Contract Check

by TrollBridge in Onchain & crypto

x402 APIPassing, checked 3 h ago

NOT AN AUDIT — heuristic screen: contract safety screen — verification status, proxy and owner-privilege heuristics, holder concentration, and a plain-English risk verdict before you sign. Toll: $0.10 USDC on Base or Solana.

GET
https://mini-tollbooth.onrender.com/contract-check
Price
$0.1
per call in USDC
Uptime
100%
last 30 days
Response time
232 ms
700 ms slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

GET https://mini-tollbooth.onrender.com/contract-check

Each call costs $0.1 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.

GET https://mini-tollbooth.onrender.com/contract-check?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=base

Parameters

ParameterTypeRequiredDescription
addressstringYesContract address to screen (0x… on Base or Ethereum).
chainstringNoWhich chain (default base). One of: base, ethereum.

Example response

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

{
  "address": "0x...",
  "chain": "base",
  "description": "NOT AN AUDIT — heuristic screen: contract safety screen — verification status, proxy and owner-privilege heuristics, holder concentration, and a plain-English risk verdict before you sign.",
  "findings": [
    {
      "code": "upgradeable-proxy",
      "severity": "medium",
      "title": "Upgradeable proxy"
    }
  ],
  "lane": "/contract-check",
  "risk": "medium",
  "risk_score": 10,
  "summary": "…",
  "verified": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.1.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://mini-tollbooth.onrender.com/contract-check?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=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 - 'https://mini-tollbooth.onrender.com/contract-check?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=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 $0.1 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.1" });
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 $0.1 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fmini-tollbooth.onrender.com%2Fcontract-check
const res = await pay("https://mini-tollbooth.onrender.com/contract-check?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=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 $0.1 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.1"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://mini-tollbooth.onrender.com/contract-check?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=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
3 h agoPassed402196 ms$0.1
7 h agoPassed402261 ms$0.1
11 h agoPassed402700 ms$0.1
15 h agoPassed402238 ms$0.1
20 h agoPassed402267 ms$0.1
Show 10 older checks
24 h agoPassed402229 ms$0.1
28 h agoPassed4021.9 s$0.1
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39 h agoPassed402180 ms$0.1
43 h agoPassed402620 ms$0.1
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2 days agoPassed402204 ms$0.1
2 days agoPassed402229 ms$0.1
2 days agoPassed402231 ms$0.1