By SanctionsAI team · Updated 2026-08-09

Screen Ethereum transactions for sanctions

Screen Ethereum counterparties before executing transactions.

const { Web3 } = require('web3');
const web3 = new Web3('https://mainnet.infura.io/v3/YOUR_KEY');

async function safeTransfer(from, to, amount) {
    // Screen both addresses
    const [fromScreen, toScreen] = await Promise.all([
        fetch(`https://sanctionsai.dev/sanctions?wallet=${from}`).then(r => r.json()),
        fetch(`https://sanctionsai.dev/sanctions?wallet=${to}`).then(r => r.json())
    ]);
    
    if (fromScreen.blocked || toScreen.blocked) {
        throw new Error("Sanctions match detected");
    }
    
    // Execute transfer
    return await web3.eth.sendTransaction({ from, to, value: amount });
}

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