ToolVet
75trust / 100

Token Contract Risk Call

by hcrb.in in Onchain & crypto

x402 APIPassing, checked 23 min ago

Deterministic Base contract facts: ERC-20 metadata, proxy slots, owner(), privileged-function selectors and flags. Not a safety verdict. Result carries a signed receipt.

POST
https://hcrb.in/v1/tools/token-contract-risk/call
Price
$0.02
per call in USDC
Uptime
100%
last 30 days
Response time
723 ms
1.1 s slowest 5%
Last check
Passed
23 min ago, next in 4 min

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

POST https://hcrb.in/v1/tools/token-contract-risk/call

Each call costs $0.02 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://hcrb.in/v1/tools/token-contract-risk/call
content-type: application/json

{
  "input": {
    "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
  }
}

Parameters

ParameterTypeRequiredDescription
inputobjectYes

Example response

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

{
  "address": "0x0000000000000000000000000000000000000000",
  "flags": [],
  "is_contract": true,
  "scope": "illustrative shape only; a live call returns facts read from Base at one block, and this example describes no real contract",
  "valid": 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 $0.02.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://hcrb.in/v1/tools/token-contract-risk/call' \
  -H 'content-type: application/json' \
  --data-raw '{"input":{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}}'

# 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://hcrb.in/v1/tools/token-contract-risk/call' \
  -H 'content-type: application/json' \
  --data-raw '{"input":{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}}' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fhcrb.in%2Fv1%2Ftools%2Ftoken-contract-risk%2Fcall&method=POST
const res = await pay("https://hcrb.in/v1/tools/token-contract-risk/call", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "input": {
      "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
    }
  }),
});
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://hcrb.in/v1/tools/token-contract-risk/call",
        json={
            "input": {
                "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            },
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
23 min agoPassed402671 ms$0.02
6 h agoPassed402723 ms$0.02
11 h agoPassed402730 ms$0.02
16 h agoPassed402570 ms$0.02
20 h agoPassed402742 ms$0.02
Show 8 older checks
25 h agoPassed402899 ms$0.02
30 h agoPassed402861 ms$0.02
35 h agoPassed402750 ms$0.02
39 h agoPassed402651 ms$0.02
43 h agoPassed402391 ms$0.02
2 days agoPassed4021.1 s$0.02
2 days agoPassed402181 ms$0.02
3 days agoPassed402142 ms$0.02