Build the system.
Keep the control.
The complete build guide and source code for your own Kalshi trading bot. It follows public trades from top Polymarket sports traders and runs on your Mac, with your limits and your approval on every real-money step.
Written so you, or an AI coding assistant, can follow it step by step. Practice mode first: no real money until you turn it on.
Educational and technical materials. Trading prediction-market contracts can lose the full amount committed.Automated Prediction Market
Trading System
A self-build kit for technically curious people who want to run their own copy-trading bot on Kalshi. It covers the full system, from finding traders and matching markets to safety limits, records and alerts, plus the exact code it runs on.
Delivered as digital files. Requires a Mac, a Kalshi account with API access, and eligibility to trade where you live.
See it running.
Screenshots from the working system. Personal details and amounts hidden.
Trade ledger in your own Google Sheet
Live dashboard on your Mac
The typed approval before any real-money change
Test suite passing before go-live
Table of contents of the build guide
What you need.
✓ A Mac (macOS) that can stay on, plugged in
✓ Python 3, which comes with macOS
✓ A Kalshi account with API access, in a place where you’re eligible to trade
✓ Comfort following technical steps, or an AI coding assistant to help
✓ Optional: a Google account for the ledger sheet
✓ Starting money: $0 in practice mode. Real money only when you choose.
Not for you if…
× You want a hosted service or someone to trade for you
× You want guaranteed or passive income
× You can't afford to lose the money you'd trade with
One system.
Six core modules.
Trader research and market matching
Reads public trades from top Polymarket sports traders and finds the exact matching Kalshi market.
Build guide and source code
Python modules, API setup, Mac background services and testing.
Practice mode and testing
Simulated trading, a backtest tool and an automated test suite before any real money.
Safety controls
Spending caps, a daily loss stop, account checks, an emergency stop and your typed approval for real-money changes.
Records and alerts
Trade ledger, text alerts, daily summary and a local dashboard.
Scaling guide
Bet sizes that grow only after the results earn it, sized to what each market can take.
Understand. Configure.
Test. Monitor.
Understand the system
Read the guide’s overview.
Set up your Mac
Install, connect your own accounts, run the tests.
Practice first
Run in practice mode and review the results.
Decide on real money
Only you can approve it, at limits you set.
Get told when
checkout opens.
Be notified when the digital kit is available.