Build & Test Trading Algorithms in Python

Write strategy scripts, backtest them against real historical data bar-by-bar, and analyze every trade. Start from built-in templates or code from scratch — the Algo Playground gives you everything you need to develop and refine algorithmic trading strategies.

Everything You Need to Build Trading Algorithms.

A complete environment for writing, testing, and analyzing Python trading strategies — with built-in templates, real-time backtesting, and TopStep API compatibility.

Python Code Editor

Write strategies in Python with a full-featured Monaco code editor. Syntax highlighting, auto-completion, and real-time error feedback.

Built-in Templates

Start fast with pre-built strategy templates — SMA crossover, RSI scalper, channel breakout, and more. Customize parameters or use as a starting point.

Real-Time Backtesting

Watch your strategy execute against real historical data bar-by-bar. Track account balance, positions, and P&L as the backtest runs.

Strategy Comparison

Save multiple runs and compare performance side-by-side. Test different parameters, timeframes, or instruments to find your edge.

TopStep API Compatible

Scripts use the same API as the TopStep ProjectX Gateway. Transition from backtesting to live trading with minimal code changes.

Trade Logs & Metrics

Every trade is logged with entry, exit, P&L, and duration. View equity curves, win rate, and drawdown for each strategy run.

How It Works

Choose a Template

Pick from built-in strategy templates or start with a blank canvas in the code editor.

Configure Your Backtest

Select the instrument, timeframe, date range, and execution speed for your strategy run.

Run & Monitor

Execute your strategy and watch it trade in real time. Pause, adjust speed, or stop at any point.

Analyze Results

Review trade logs, equity curves, and performance metrics. Save runs and compare across strategies.

Write Strategies in Pure Python

Code, Test, Iterate

The Algo Playground gives you a full-featured code editor with syntax highlighting, auto-completion, and real-time error feedback. Write your strategy logic in Python using a simple, intuitive API.

Every strategy receives market data bar-by-bar and can place orders, check positions, and manage risk — just like a real trading bot. When your strategy is ready, hit run and watch it execute against historical data in real time.

Scripts use the same API structure as the TopStep ProjectX Gateway, so transitioning from backtesting to live trading requires minimal code changes.

strategy.py

def on_bar(bar, account, api):
    sma_fast = sma(account.bars, 10)
    sma_slow = sma(account.bars, 30)

    if sma_fast > sma_slow and not account.position:
        api.place_order("BUY", qty=1)
    elif sma_fast < sma_slow and account.position:
        api.place_order("SELL", qty=1)

Frequently Asked Questions

What programming language does the Algo Playground use?

The Algo Playground uses Python. You write strategy scripts that interact with a trading API to place orders, check positions, and read market data. No external dependencies are needed — everything runs in a sandboxed environment.

Do I need programming experience?

Basic Python knowledge is helpful, but the built-in templates are a great starting point. Each template includes comments explaining the logic, so you can learn by modifying working strategies rather than writing from scratch.

Is the Algo Playground a Pro feature?

Yes, the Algo Playground requires a Pro subscription at $14.99/month. The free plan includes full manual backtesting with all order types, drawing tools, and analytics.

Can I use my strategies on a live trading platform?

Yes. Algo Playground scripts use the TopStep-compatible Simulator API. When you're ready to go live, your strategy code works with the real TopStep ProjectX Gateway API with minimal changes.

Ready to Build Your First Strategy?

Start from a template or write your own from scratch. The Algo Playground gives you everything you need to develop, test, and refine trading algorithms.

No credit card required. Free plan available.