Payguard Address

{
  "address": "0x098b716b8aaf21512996dc57eb0615e2383e2f96",
  "chain": {
    "candidates": [
      "ethereum",
      "base",
      "arbitrum",
      "optimism",
      "polygon",
      "bnb-smart-chain",
      "avalanche-c",
      "ethereum-classic"
    ],
    "checksum": "eip55",
    "checksum_address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
    "checksum_valid": true,
    "format": "evm-hex20",
    "guess": "evm"
  },
  "disclaimer": "Informational screening against the public OFAC SDN list (digital currency address identifiers only). Not legal advice. A clear result does not mean an address or its owner is unsanctioned or low-risk; OFAC sanctions also apply to persons and property not listed by address.",
  "engine": "payguard-2026-10-21",
  "input": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
  "list_age_days": 0,
  "list_updated_at": "2026-10-21",
  "match_count": 1,
  "match_type": "exact (EVM hex and bech32 case-insensitive, base58 exact)",
  "matches": [
    {
      "entity": "LAZARUS GROUP",
      "entity_type": "Entity",
      "list_date": "2019-09-13",
      "listed_as": "Digital Currency Address - ETH",
      "listed_currency": "ETH",
      "programs": [
        "DPRK3"
      ],
      "sdn_uid": 27307
    }
  ],
  "sanctioned": true,
  "sdn_address_count": 1050,
  "source": "US Treasury OFAC Specially Designated Nationals (SDN) list",
  "source_url": "https://sanctionslistservice.ofac.treas.gov/api/PublicationPreview/exports/SDN.XML"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.youraitools.co/payguard/v1/address?address=0x098B716B8Aaf21512996dC57EB0615e2383E2f96'

# 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://api.youraitools.co/payguard/v1/address?address=0x098B716B8Aaf21512996dC57EB0615e2383E2f96' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.youraitools.co%2Fpayguard%2Fv1%2Faddress
const res = await pay("https://api.youraitools.co/payguard/v1/address?address=0x098B716B8Aaf21512996dC57EB0615e2383E2f96");
console.log(res.status, await res.text());

# 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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.youraitools.co/payguard/v1/address?address=0x098B716B8Aaf21512996dC57EB0615e2383E2f96")
    print(res.status_code, res.text)