ToolVet
77trust / 100

Scan

by contractlens-api.appin60.com in Onchain & crypto

x402 APIPassing, checked 2 h ago

Smart contract security scan for AI agents: give a chain id and contract address, get Slither static-analysis findings (reentrancy, unchecked calls, arbitrary sends, etc.), proxy/upgradeability status and the list of owner/role-gated admin functions (mint, pause, blacklist, upgrade). Works on any Sourcify-verified contract on Ethereum, Base, Arbitrum, Optimism, Polygon, BNB. Use before approving, depositing into or trading a token/protocol. Unverified contracts are rejected without charge.

GET
https://contractlens-api.appin60.com/scan
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
405 ms
651 ms slowest 5%
Last check
Passed
2 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 · Watch with other listings

How to call it

GET https://contractlens-api.appin60.com/scan

Each call costs $0.01 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://contractlens-api.appin60.com/scan?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chainId=8453

Parameters

ParameterTypeRequiredDescription
addressstringYesContract address (0x...). Must be verified on Sourcify. Proxies are followed to the implementation.
chainIdstringYesEVM chain id: 1 Ethereum, 8453 Base, 42161 Arbitrum, 10 Optimism, 137 Polygon, 56 BNB

Example response

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

Example response, 39 lines
{
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "chain": "Base",
  "contractName": "FiatTokenProxy",
  "control": {
    "owner": {
      "address": "0x3abd6f64a422225e61e435bae41db12096106df7",
      "kind": "EOA (single key)"
    }
  },
  "findings": [
    {
      "check": "shadowing-local",
      "confidence": "High",
      "description": "...",
      "impact": "Low"
    }
  ],
  "ok": true,
  "privilegedFunctions": [
    {
      "function": "mint(address,uint256)",
      "modifiers": [
        "onlyMinters"
      ]
    }
  ],
  "proxy": {
    "implementation": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779",
    "type": "ZeppelinOSProxy"
  },
  "summary": {
    "findingsByImpact": {
      "Informational": 35,
      "Low": 9
    },
    "privilegedFunctionCount": 11
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://contractlens-api.appin60.com/scan?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chainId=8453'

# 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://contractlens-api.appin60.com/scan?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chainId=8453' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fcontractlens-api.appin60.com%2Fscan
const res = await pay("https://contractlens-api.appin60.com/scan?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chainId=8453");
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://contractlens-api.appin60.com/scan?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chainId=8453")
    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
2 h agoPassed402575 ms$0.01
6 h agoPassed402557 ms$0.01
11 h agoPassed402540 ms$0.01
16 h agoPassed402338 ms$0.01
20 h agoPassed402293 ms$0.01
Show 8 older checks
24 h agoPassed402361 ms$0.01
28 h agoPassed402651 ms$0.01
32 h agoPassed402544 ms$0.01
37 h agoPassed402351 ms$0.01
41 h agoPassed402405 ms$0.01
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2 days agoPassed402324 ms$0.01
2 days agoPassed402642 ms$0.01