ArbTrader Dashboard

ArbTrader

Live spreads across Kalshi, Polymarket & sportsbook lines. ArbTrader never trades on its own.

Checking your license…

State rules

Sportsbooks, Kalshi, Polymarket US and winnings tax where you are.

Every opportunity below links straight to each leg on Kalshi/Polymarket (sportsbook legs link to the bookmaker's site when available). Review the numbers and take the trade or bet yourself, on the platform, in your own account.

Profit & loss

—

Open positions

—

Connect a Kalshi API key or Polymarket wallet address in to see your portfolio summary here.

Profit & loss

From your real Kalshi and Polymarket trades, settlements and open positions.

Total P&L

—

Realized

—

Unrealized

—

Kalshi balance

—

Open positions

—

Market	Legs	Cost	Spread	Max size	Confidence

No qualifying spreads right now. The feed updates automatically.

Add your Kalshi API key and/or your Polymarket wallet address in to see your positions and trade history here. Loading this tab never sends an order.

Profit & loss

Buying opens a position at cost, so it doesn't move the curve. P&L is realized when you sell or a market settles (net of fees), and the latest point adds unrealized P&L on open positions, marked at what you could sell them for now.

No trade history yet.

Open positions

Platform	Market	Size	Exposure	P&L

No open positions.

Trade log

When	Platform	Market	Side	Price	Size

No fills yet.

Confirmed cross-platform matches

Only markets listed here are used for cross-platform arbitrage. Adding one is a claim that you personally checked both platforms resolve on the same event, same criteria, same deadline.

Suggested matches (unconfirmed)

Title-similarity guesses only. Read both markets' rules before confirming — a mismatch here turns a "hedge" into a real bet.

Accounts & API keys

Connect your ArbTrader license and exchange accounts. Everything here is saved only on this computer, in your .env file — never sent to arbtrader.co. Saved secrets can't be shown again; leave a field blank to keep what's saved. ArbTrader never asks for your exchange username or password, only API keys.

ArbTrader

Kalshi

Polymarket

Sportsbook lines & alerts

Pro order tickets

Kalshi

API key for market data and your Portfolio tab. Pro order tickets also use it, so it needs trading permission for those.

Polymarket

Wallet address for your Portfolio tab. A signing key is only needed for Pro order tickets.

Sportsbook (The Odds API)

Read-only odds key. Polls on its own slow interval to stay inside the free tier's monthly credit budget — see README.md.

Discord alerts

Pings a Discord channel the instant a qualifying spread appears — add a webhook in Accounts & API keys.

Real-time feeds

Kalshi/Polymarket order books over WebSocket instead of polling, when available.

License

Add your license key in Accounts & API keys — it's on your account page at arbtrader.co.

Order tickets Pro

Send a Kalshi/Polymarket spread from an order ticket you confirm. Never automatic.

Fallback REST refresh interval (seconds)

Used whenever a real-time feed isn't connected. Has no effect on how fast an already-connected WebSocket feed updates.

Saved.