Book Trader is a native order-book trading interface for Kalshi prediction markets, built by AIDoingIt.
Open Settings (gear icon) in the app and enter your Kalshi API Key ID and private key under "Kalshi API Key." Once saved, every order you place is signed with your own key and executed on your own Kalshi account.
Where is my data stored? Your Kalshi API credentials are stored locally on your device and are only transmitted to our server at the moment you place, cancel, or close an order. See our Privacy Policy for details.
Does Book Trader hold my funds? No. Book Trader does not custody funds or positions — all trades execute directly on your own Kalshi account.
I'm having trouble connecting my API key. Double-check that you've copied the full Key ID and private key exactly as shown in your Kalshi account settings, with no extra whitespace.
For support requests, bug reports, or feedback, email us at support@aidoingit.com.
See our Terms of Use and Privacy Policy.