Sanctions Screen

{
  "disclaimer": "Screening aid only, not legal advice...",
  "legal": {
    "privacy": "https://sanctions-screen-production.up.railway.app/privacy",
    "terms": "https://sanctions-screen-production.up.railway.app/terms"
  },
  "lists_screened": [
    {
      "entries": 19457,
      "id": "OFAC_SDN",
      "version_date": "2026-10-15"
    }
  ],
  "match_count": 1,
  "matches": [
    {
      "country_match": true,
      "dob_match": null,
      "entry_id": "306",
      "list": "OFAC_SDN",
      "list_version_date": "2026-10-15",
      "matched_name": "BANCO NACIONAL DE CUBA",
      "primary_name": "BANCO NACIONAL DE CUBA",
      "programs": [
        "CUBA"
      ],
      "score": 1,
      "source_url": "https://sanctionssearch.ofac.treas.gov/Details.aspx?id=306",
      "type": "entity"
    }
  ],
  "result": "potential_match",
  "status": "ok",
  "use_when": "Use when an agent must screen a customer, supplier or payee (person or company) against official sanctions lists (OFAC SDN + Consolidated, EU, UK; UN designations via EU/UK transposition) before onboarding, contracting or paying them."
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://sanctions-screen-production.up.railway.app/v1/sanctions/screen?country=CU&name=Banco+Nacional+de+Cuba'

# 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://sanctions-screen-production.up.railway.app/v1/sanctions/screen?country=CU&name=Banco+Nacional+de+Cuba' \
  | 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 $0.02 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%2Fsanctions-screen-production.up.railway.app%2Fv1%2Fsanctions%2Fscreen
const res = await pay("https://sanctions-screen-production.up.railway.app/v1/sanctions/screen?country=CU&name=Banco+Nacional+de+Cuba");
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 $0.02 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.get("https://sanctions-screen-production.up.railway.app/v1/sanctions/screen?country=CU&name=Banco+Nacional+de+Cuba")
    print(res.status_code, res.text)