How to Build a Free RSI and MACD Trading Bot with ChatGPT & Alpaca

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Artificial intelligence, particularly large language models (LLMs) like ChatGPT, Claude, or Gemini, is transforming how traders operate. These tools assist in strategy development, market analysis, and automated code generation. The rise of AI-driven trading solutions is evident, with platforms like GitHub hosting thousands of ChatGPT-related projects—many focused on trading.

This guide demonstrates how to leverage ChatGPT and Alpaca’s Trading API to build a Python trading bot using Relative Strength Index (RSI) and Moving Average Convergence Divergence (MACD) indicators. By the end, you’ll deploy the bot on AWS EC2 for automated execution via cron jobs.


Building an RSI and MACD Algorithmic Trading Bot

Step 1: Define Your Trading Bot Objective

Start by outlining the bot’s goals with ChatGPT:

Example Prompt:

"You’re an expert trader and Python developer. Teach me how to build an automated trading bot using alpaca-py and AWS EC2. Outline the architecture, essential components, and development steps."

Step 2: Choose Your Tech Stack

Step 3: Understand RSI and MACD Indicators

ChatGPT can list popular technical indicators and their typical configurations:

Prompt:

"List popular RSI/MACD entry/exit signals for mid-term trading."

Step 4: Design Entry and Exit Rules

Buy Signals:

  1. RSI rebounds above 30 (oversold bounce).
  2. MACD line crosses above the signal line.
  3. MACD line is above the zero line.

Sell Signals:

  1. RSI drops below 70 (overbought reversal).
  2. MACD line crosses below the signal line.
  3. MACD line falls under the zero line.

Step 5: Write Pseudocode

Convert your strategy into pseudocode with ChatGPT’s help:

# Entry: RSI < 30 and MACD crossover within 5 bars  
if not position_open and rsi > 30 and macd_crossover:  
    order = submit_order(symbol="TQQQ", side="buy")  
    set_stop_loss(order, 2%)  # Risk management  

👉 Explore Alpaca’s GitHub for complete code examples


Step 6: Deploy on AWS EC2

  1. Set Up EC2: Launch an Ubuntu instance and SSH into it.
  2. Schedule with Cron:

    CRON_TZ=America/New_York  
    30 9 * * 1-5 python3 /path/to/strategy.py >> /path/to/trade_log.txt  
  3. Monitor Logs: Check trade_log.txt for execution details.

Key Benefits of Trading Bots

Risks:

👉 Start with Alpaca’s Paper Trading API


FAQ

Q: Which AI trading bot is best for beginners?
A: Start with Python-based bots using Alpaca’s API—it’s beginner-friendly and supports paper trading.

Q: How do I monitor my bot’s performance?
A: Use AWS CloudWatch for system metrics and review trade_log.txt for strategy execution details.

Q: Can I use this bot for cryptocurrencies?
A: Yes, but Alpaca Crypto requires separate registration and carries additional risks.


Disclaimer: Trading involves risks. Past performance doesn’t guarantee future results. Test strategies thoroughly in a paper trading environment before live deployment.

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