ToolVet
78trust / 100

Domain Trust

by how.is in Security & trust

x402 APIPassing, checked 2 h ago

Should an agent click, sign in to, or pay this domain? A risk score and verdict (likely_safe / caution / high_risk, or inconclusive when a check could not run) with plain-English reasons, from domain age, spam/abuse blocklists and the HTTPS certificate.

POST
https://how.is/v1/domain/trust
Price
$0.02
per call in USDC
Uptime
100%
last 30 days
Response time
265 ms
3.4 s 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

POST https://how.is/v1/domain/trust

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://how.is/v1/domain/trust
content-type: application/json

{
  "domain": "github.com"
}

Parameters

ParameterTypeRequiredDescription
domainstringYesA bare domain name, e.g. example.com

Example response

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

{
  "data": {
    "_shape": "data: verdict, risk_score (0-100), reasons[{risk, why}], age_days, blocklist_listings, blocklists_unanswered[], https_valid, not_checked[]."
  },
  "receipt": {
    "charge_usd": 0.02,
    "rail": "x402",
    "settlement_tx": "0x…",
    "tool": "trust"
  },
  "result": "Trust check for the requested subject"
}

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://how.is/v1/domain/trust' \
  -H 'content-type: application/json' \
  --data-raw '{"domain":"github.com"}'

# 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://how.is/v1/domain/trust' \
  -H 'content-type: application/json' \
  --data-raw '{"domain":"github.com"}' \
  | 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%2Fhow.is%2Fv1%2Fdomain%2Ftrust&method=POST
const res = await pay("https://how.is/v1/domain/trust", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "domain": "github.com"
  }),
});
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://how.is/v1/domain/trust",
        json={
            "domain": "github.com",
        },
    )
    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 agoPassed402277 ms$0.02
9 h agoPassed402255 ms$0.02
14 h agoPassed402256 ms$0.02
19 h agoPassed402265 ms$0.02
25 h agoPassed402236 ms$0.02
Show 10 older checks
32 h agoPassed402416 ms$0.02
42 h agoPassed4026.0 s$0.02
2 days agoPassed402245 ms$0.02
3 days agoPassed402336 ms$0.02
3 days agoPassed402541 ms$0.02
3 days agoPassed402221 ms$0.02
4 days agoPassed402331 ms$0.02
4 days agoPassed402379 ms$0.02
4 days agoPassed402322 ms$0.02
5 days agoPassed402222 ms$0.02