Automated cross-platform arbitrage detection and monitoring
Automated detection and monitoring of arbitrage opportunities across prediction market platforms.
/arb start # Start arbitrage monitoring
/arb stop # Stop monitoring
/arb status # Check monitoring status
/arb config --interval 60 # Set check interval (seconds)
/arb check # Run one-time scan
/arb check "election" # Scan with keyword
/arb check --platforms poly,kalshi # Specific platforms
/arb compare <market-a> <market-b> # Compare two specific markets
/arb compare poly:12345 kalshi:TRUMP # By platform:id
/arb opportunities # List current opportunities
/arb opportunities --min-spread 2 # Min 2% spread
/arb opportunities --format table # Table format
/arb opportunities --format detailed # Detailed view
/arb link <market-a> <market-b> # Manually link markets
/arb unlink <market-a> <market-b> # Remove link
/arb links # View all links
/arb auto-match # Auto-detect matches
/arb stats # Arbitrage statistics
/arb stats --period 7d # Last 7 days
/arb history # Historical opportunities
import { createArbitrageService } from 'clodds/arbitrage';
const arbService = createArbitrageService({
platforms: ['polymarket', 'kalshi', 'manifold', 'betfair'],
checkIntervalMs: 30000, // Check every 30 seconds
minSpread: 0.5, // 0.5% minimum spread
minLiquidity: 100, // $100 minimum
// Platform credentials
polymarket: { apiKey, apiSecret, passphrase },
kalshi: { apiKey },
});
// Start continuous monitoring
await arbService.start();
// Event handlers
arbService.on('arbitrage', (opp) => {
console.log(`⚖️ Arbitrage found!`);
console.log(` ${opp.marketA.platform}: ${opp.marketA.price}`);
console.log(` ${opp.marketB.platform}: ${opp.marketB.price}`);
console.log(` Spread: ${opp.spread.toFixed(2)}%`);
});
arbService.on('arbitrageExpired', (opp) => {
console.log(`Arbitrage expired: ${opp.id}`);
});
// Check status
const isRunning = arbService.isRunning();
// Stop monitoring
await arbService.stop();
// Run a single scan
const opportunities = await arbService.checkArbitrage({
query: 'trump',
platforms: ['polymarket', 'kalshi'],
minSpread: 1,
});
for (const opp of opportunities) {
console.log(`${opp.question}`);
console.log(` Buy on ${opp.buyPlatform} @ ${opp.buyPrice}`);
console.log(` Sell on ${opp.sellPlatform} @ ${opp.sellPrice}`);
console.log(` Spread: ${opp.spread.toFixed(2)}%`);
}
// Compare two specific markets
const comparison = await arbService.compareMarkets(
{ platform: 'polymarket', id: 'market-123' },
{ platform: 'kalshi', id: 'TRUMP-WIN' }
);
if (comparison.hasArbitrage) {
console.log(`Arbitrage exists!`);
console.log(` Buy ${comparison.buySide} on ${comparison.buyPlatform}`);
console.log(` Sell ${comparison.sellSide} on ${comparison.sellPlatform}`);
console.log(` Spread: ${comparison.spread.toFixed(2)}%`);
} else {
console.log(`No arbitrage. Price difference: ${comparison.priceDiff.toFixed(2)}%`);
}
// Add a manual match
await arbService.addMatch(
{ platform: 'polymarket', id: 'market-123', question: 'Will Trump win?' },
{ platform: 'kalshi', id: 'TRUMP-WIN', question: 'Trump wins 2024' }
);
// Remove a match
await arbService.removeMatch('polymarket:market-123', 'kalshi:TRUMP-WIN');
// Auto-detect matches using question similarity
const autoMatches = await arbService.autoMatchMarkets({
minSimilarity: 0.85,
});
console.log(`Found ${autoMatches.length} auto-matches`);
// Get current opportunities
const opportunities = await arbService.getOpportunities({
minSpread: 1,
sortBy: 'spread', // 'spread' | 'liquidity' | 'confidence'
});
// Format for display
const formatted = await arbService.formatOpportunities(opportunities);
console.log(formatted);
// Get arbitrage statistics
const stats = await arbService.getStats({
period: '30d',
});
console.log(`Total opportunities: ${stats.totalOpportunities}`);
console.log(`Avg spread: ${stats.avgSpread.toFixed(2)}%`);
console.log(`Max spread seen: ${stats.maxSpread.toFixed(2)}%`);
console.log(`By platform pair:`);
for (const [pair, count] of Object.entries(stats.byPlatformPair)) {
console.log(` ${pair}: ${count}`);
}
Market: "Trump wins 2024"
Polymarket YES: 52¢
Kalshi YES: 55¢
Strategy: Buy Polymarket YES, Sell Kalshi YES
Spread: 3¢ (5.8%)
Market: "Will X happen?"
YES: 45¢
NO: 52¢
Total: 97¢
Strategy: Buy both YES and NO
Guaranteed profit: 3¢ per $1
Market A: "Trump wins" = 55¢
Market B: "Trump loses" = 48¢
Total: 103¢ (should be 100¢)
Strategy: Sell both, pocket 3¢
arbService.configure({
// Scanning
checkIntervalMs: 30000,
batchSize: 50,
// Filtering
minSpread: 0.5,
minLiquidity: 100,
minConfidence: 0.7,
// Matching
autoMatchEnabled: true,
minMatchSimilarity: 0.85,
// Alerts
alertOnNewArb: true,
alertThreshold: 2, // Alert on 2%+ spreads
});