API Integration

An Application Programming Interface (API) is a set of rules that allows two software programs to "talk" to each other. In trading, an API allows your custom Python code to send commands (buy, sell, cancel) to your brokerage account and receive information back (price, account balance, order status) in real-time.

• Speed: API-driven execution bypasses the slow manual interface of a trading terminal, executing trades in milliseconds.
• Accuracy: By eliminating human input, you remove the possibility of fat-finger errors and emotional interference.
• Continuous Monitoring: Your code can monitor positions 24/7 without you having to stare at a screen.

Working with APIs requires strict security awareness:

• API Keys: Never share your API secret keys. Store them securely, never hardcode them in your scripts, and use environment variables instead.
• Paper Trading: Always start by connecting to a "Paper Trading" (sandbox) environment. Never run a new algorithm on a live account until it has been tested and verified in a safe, simulated environment.
• Rate Limiting: Be aware of the brokerage's API limits. Sending too many requests at once can lead to your connection being blocked.